Moneyness and What Makes an Instrument Money

What Is Moneyness?

Modern economies rely on a heterogeneous array of instruments to serve as mediums of exchange, units of account, and stores of value. Federal Reserve notes, balances held at the Federal Reserve, commercial bank deposits, money market fund shares, digital wallet balances, and stablecoins all perform monetary functions, and they perform them with markedly differing success. Moneyness is the analytical concept that registers the difference. It denotes the degree to which an instrument is able to operate as money. The legal account developed below evaluates that capacity through four interdependent elements, with applications to monetary instruments under United States law.¹

The concept itself is old, and its early development belonged to economists working largely in isolation from one another. Professor J.R. Hicks described bills that traded at a discount for want of general acceptability as carrying “imperfect 'moneyness'.”² Fritz Machlup later ventured that “[t]he criterion of moneyness is immediate availability without loss for use in discharge of debt.”³ Milton Friedman and Anna J. Schwartz treated assets as joint products with differing degrees of moneyness, while acknowledging the difficulty of assigning weights to those degrees.⁴ Professor Gary B. Gorton gives particular attention to the design of safe debt, which holders can accept without investigating the issuer.⁵ These accounts identify economic properties that enable circulation and raise the further question of how legal institutions sustain them.

Financial-regulation scholarship places legal institutions at the center of the inquiry. Public protections against default and illiquidity sustain confidence in private claims, alongside the arrangements that permit their use in payment. Professor Dan Awrey distills the attribute as “the confidence that users have in the ability to immediately, and without question, use an asset to purchase goods and services and discharge their debts.”⁶ Professor Morgan Ricks locates it in price stability relative to the medium of exchange, since a money-claim must exhibit “very low credit risk and very low interest rate risk.”⁷ Professor Katharina Pistor likewise examines the legal qualities that place monetary instruments at different levels of the monetary hierarchy.⁸

The four-element account gives independent analytical weight to private-law capacities that an emphasis on safety can obscure.⁹ Safety is necessary, and it is not sufficient. Money must also be spent, and a spent instrument must extinguish the obligation it is tendered against and must reach its recipient unencumbered by the transactions that preceded it. Neither capacity follows from safety, and neither is supplied by the public-law apparatus that constructs safety. The four-element account treats moneyness as a legal attribute “in which public-law protections and private-law rights are tightly interwoven and functionally interdependent.”¹⁰ Four elements give that account its content.

These are one foundational element and three functional ones. The first is the nature and substance of the claim: the identity of the issuer, the kind of interest the holder acquires, the source from which it springs, and the content of the undertaking. The second is safety, meaning confidence that the promise will be honored and that recovery will follow if it is not. The third is discharge capacity, which asks whether creditors will accept the instrument in satisfaction of obligations and whether transfers achieve legal finality. The fourth is negotiability, which asks whether recipients take free of competing claims and defenses.¹¹

Moneyness so conceived is scalar rather than binary, and the four elements do not simply add up. They behave as the tasks do in the O-ring theory of Professor Michael Kremer, where quality enters multiplicatively and a failure at any stage degrades the whole.¹² “Strengthening any element can increase moneyness, but excellence in one or more cannot fully compensate for the weakest. That element sets the ceiling, which cannot rise unless the underlying deficiency is remedied.”¹³ An instrument may accordingly “possess moneyness in full degree, in modest degree, or in practically none,”¹⁴ and its assessment must identify the weakest element while examining the contribution of the others.

This account distinguishes the legal architecture of an instrument from market attention to its weaknesses. Where that architecture remains unchanged, an expansion can conceal differences that a crisis reveals. Market participants disregard those differences in prosperous periods, “while crises make them manifest, revealing the true degree of moneyness of each.”¹⁵ Professor Perry Mehrling describes the renewed differentiation among monetary instruments during contraction.¹⁶

Why Is Money a Promise?

Commodity money appeared to derive its functions from the inherent value of the instrument, yet precious-metal coinage depended throughout on governmental support and legal architecture. The sovereign accepted its own coin in payment of taxes, mints and assay offices authenticated it, and foreign coins were reminted to the local standard. Commodity money unsupported by that backbone proved vulnerable to counterfeiting and debasement. Fiat money admits of no equivocation at all about its dependence on law. Its substance is paper or a book entry, severed from any commodity, and it stands nonetheless as the anchor of every modern monetary system. Georg Friedrich Knapp put the point sharply a century ago, writing that “[t]he soul of currency is not in the material of the pieces, but in the legal ordinances which regulate their use.”¹⁷

It follows that “any attempt to assess the moneyness of an instrument must begin with its legal nature.”¹⁸ That inquiry identifies the issuer and establishes what holders acquire, whether their interest is proprietary or personal, and what rights and obligations attach. It also yields the first and most consequential division in the monetary system, which runs between public and private money.

Public money is issued by the state and takes two guises in the United States, namely currency and central-bank reserves. Both are creatures of legislation rather than of private agreement. Their legal nature is sui generis, because a Federal Reserve note is formally a liability of the central bank and yet requires no performance beyond acceptance of the instrument itself. Currency “cannot default in any ordinary legal sense, because paper currency does not represent any actionable legal obligation,” and reserve balances “are no different.”¹⁹ Holding either creates no contractual relationship with the Federal Reserve of the kind created by a private debt claim. The relevant safety concerns performance of the nominal legal undertaking, rather than preservation of purchasing power.

Private money is a creature of contract, consisting of claims issued by non-sovereign institutions against which the holder acquires a personal right. This is by a wide margin the larger part of the monetary system. A Treasury Department report of 2022 estimated Federal Reserve notes at $2.2 trillion and central-bank reserves at $3.3 trillion, against private money of at least $19.4 trillion, more than three times the two combined.²⁰

Within that category the heterogeneity is profound. Bank deposits are the most significant form of private money in volume and in societal reach. A customer who places funds with a commercial bank becomes a creditor and the bank a debtor, for money paid into a bank “ceases altogether to be the money of the principal . . . ; it is then the money of the banker, who is bound to return an equivalent by paying a similar sum to that deposited with him when he is asked for it.”²¹ That right is personal and unsecured, and its scope is fixed by contract, albeit a contract hemmed in by statutory and regulatory requirements that homogenize deposit claims across institutions. Non-bank claims share the same contractual core and none of that homogenization. A customer of Cash App, PayPal, Venmo, or Western Union acquires whatever the governing terms of service confer, and whether the funds are held in trust or owed as a debt turns on which state law applies.

Money is therefore promissory throughout, with public money a sovereign undertaking and private money a contractual one. These promises do not stand in parallel. They form a tiered structure, since “always and everywhere, monetary systems are hierarchical.”²² Public money sits at the apex, because the sovereign undertakes not to supply anything but to take its own money back. Beneath it lie bank deposits, which promise currency to their holders and settle in reserve balances for interbank transactions. Lower still sit claims against non-bank providers, which undertake convertibility into bank deposits or other private instruments. The tiering explains why disruption at one level reverberates through claims that appear unrelated to it.

What Makes a Monetary Instrument Safe?

Safety answers two inquiries that arise in respect of any obligation. The first asks whether the issuer will honor its undertakings. The second concerns the likelihood, measure, and timing of recovery upon default. The greater the uncertainty attending either question, the more the holder must investigate and the more the instrument will be discounted against its face value. Investigation and discounting are alike fatal, since “[n]either exercise is compatible with an instrument that is intended to be exchanged at par, sight unseen,”²³ and the resulting gradient across monetary instruments is correspondingly steep.

Public money stands at the highest level of safety in this account. The sovereign accepts its own money, an undertaking that does not depend on acquiring another asset for redemption. At the level of the continued legal existence of that undertaking, the threat is existential, namely “the risk of military conquest, revolution, or dissolution extinguishing the sovereign and its monetary order.”²⁴

Private money presents a different proposition entirely, because these claims require performance far more substantive than mere acceptance. Public law intervenes to bolster issuer solvency and to improve the position of holders on failure, and the measures vary dramatically across instruments. Bank deposits stand at the top of the resulting gradient, where “four layers of legal protections transform this otherwise precarious position into the safest specimen of private money.”²⁵ Federal deposit insurance guarantees deposits up to $250,000 per depositor, per institution, and per capacity and right in which they are held, and its practical reach may exceed that limit. When Silicon Valley Bank and Signature Bank failed in March 2023, regulators invoked the systemic risk exception and resolved both “in a manner that fully protects all depositors.”²⁶ Access to the discount window and other emergency facilities addresses temporary funding shortfalls. Prudential supervision imposes capital minima, liquidity requirements, and ongoing examination. A tailored resolution regime displaces the Bankruptcy Code, so that the Federal Deposit Insurance Corporation ordinarily arranges for another institution to assume the deposits. Where that route is precluded, the Corporation pays insured deposits directly. Payees accordingly accept deposit transfers at par without investigating the condition of the issuing institution, and that practice supplies “the benchmark against which the safety of every other type of private money is measured.”²⁷

Non-bank claims occupy far weaker ground, since the four layers are either absent or attenuated. Federal deposit insurance does not protect holders against failure of the non-bank issuer. Where an issuer places backing funds in a bank account, insurance concerns failure of that bank. The deposit may qualify for pass-through coverage if the applicable ownership and recordkeeping requirements are satisfied, but that protection still does not insure the non-bank obligation.²⁸ Non-bank issuers likewise have no standing access to the discount window, leaving them without a lender of last resort. The nearest analogue to prudential supervision is the state money transmitter statute, and for most of its history that regime demanded strikingly little. In a study published in 2022, Professor Awrey contrasted a $3 million net-worth requirement with PayPal assets exceeding $70 billion, describing “a razor thin layer of capital protection.”²⁹ The Model Money Transmission Modernization Act of the Conference of State Bank Supervisors supplies a more demanding model, calibrating capital to the size of the licensee and requiring qualifying assets to back customer obligations.³⁰ These requirements strengthen the position of customers while remaining distinct from the protections governing bank deposits.

Insolvency exposes a further weakness that survives even nominal segregation. A provider may keep customer funds commingled in omnibus accounts in its own name. If expenditure or a valid set-off depletes that pool, the customer may be unable to establish a proprietary claim to the missing funds for want of an identifiable res. To the extent that the customer cannot identify surviving trust property or its proceeds, recovery may depend on an unsecured claim under the ordinary priorities of the Bankruptcy Code. The difference begins with the undertaking itself, for “[p]ublic money stands at the apex, for the sovereign undertakes nothing it could fail to deliver.”³¹ Private claims require additional protections, and even a secure promise must be capable of discharging the obligation for which it is tendered.

What Is Discharge Capacity?

Discharge capacity concerns the payor. It asks whether tender of the instrument extinguishes the obligation in satisfaction of which it is offered, and whether the moment of extinction is clearly fixed and final in law. The element has two dimensions, namely acceptance and settlement finality, and an instrument that is weak in either “falters as a medium of exchange and, in turn, as money.”³² The two dimensions behave differently, and acceptance is the more tractable of them.

Acceptance divides public from private money sharply. Statute designates public money as “legal tender for all debts, public charges, taxes, and dues,” though that investiture compels no one to accept notes and coins in the course of business.³³ The recent wave of cashless-retail bans confirms the point, since such statutes had to impose a duty to accept cash precisely because none otherwise exists. Legal tender status matters nonetheless, because presentation of currency in the proper amount is a sufficient offer of payment for an existing dollar debt. A creditor may decline it, and the refusal may carry consequences under the applicable law. These include limits on interest and costs, discharge of secondary obligors, and restrictions on enforcement of security. Private money enjoys no such status. Claims issued by banks have nonetheless acquired near-universal acceptance in practice, a development William M. Gouge recorded as early as 1833 when he observed that bank paper “is not a legal tender in the discharge of private debts: but it has become, in point of fact, the only actual tender, and the sudden refusal of creditors to receive it would put it out of the power of debtors to comply with their engagements.”³⁴ Non-bank claims occupy the lower ground, where acceptance is beholden to private ordering and seldom extends beyond the ecosystem of the issuer.

Settlement finality is the second dimension, and the word itself invites trouble. “The term 'finality' is a notorious source of confusion, as it is used with diverse meanings in payment law and not always with care.”³⁵ Used precisely, it indicates the point at which the obligation of the payor is extinguished and the transaction closed to challenge. A robust regime must fix that moment exactly and must delimit narrowly the instances in which a payment can be unwound, whether through insolvency proceedings or through defect-based claims such as mistake or fraud. Intermediation compounds both tasks.

Physical currency satisfies the test on both counts, because it passes directly from payor to payee and the common law has long held that the obligation is extinguished on delivery and acceptance. Coins and notes cannot be recovered once they have changed hands, “upon account of the currency of it,” and Lord Mansfield was careful to locate the immunity in the law of currency rather than in the nature of money.³⁶ The exceptions are narrow, reaching a recipient who takes gratuitously or with notice of tainted provenance, payments made in fraud of creditors, and preferences recoverable by a bankruptcy estate.

Bank claims achieve comparable finality through statute rather than through the common law, and the achievement is considerable because intermediaries are inherent to the transaction. Article 4A of the Uniform Commercial Code connects the obligations of the participants to acceptance of payment orders. A receiving bank other than the bank of the beneficiary generally accepts an order “when it executes” it. The bank of the beneficiary accepts under the separate rules of section 4A-209(b) and becomes “obliged to pay the amount of the order to the beneficiary.” Section 4A-406 connects payment and discharge to that acceptance, subject to its conditions and exceptions.³⁷ Regulation J extends the regime to Fedwire. Unwinding is tightly confined. Cancellation after acceptance generally requires the agreement of the receiving bank or authorization under a funds-transfer system rule, subject to further statutory conditions. A mistaken transfer need not be returned where the beneficiary received it without notice of the error and was owed the debt.³⁸

Nothing comparable governs non-bank claims. The state money-transmission statutes address the solvency of the licensee rather than the legal effect of the transaction, so the applicable regime must be inferred from terms of service, consumer-protection statutes, card-network rules, and the common law of restitution. Terms of service routinely permit the issuer to delay, freeze, refuse, or reverse a transfer at its own discretion, and the counterweight supplied by the Electronic Fund Transfer Act and Regulation E is partial. Card-funded transfers are more precarious still, since network chargeback rules open a further route to reversal. Because “the settlement finality of non-bank claims is fractured and nebulous,”³⁹ the moment at which the obligation of the payor is extinguished cannot be stated in advance, and payments stand exposed to unwinding for multifarious reasons.

What Is Negotiability, and Why Does Money Need It?

Negotiability concerns the payee. An instrument cannot move through the economy at speed if every prospective taker must investigate the title of the transferor, the security interests encumbering the instrument, and the defenses trailing from earlier transactions. The baseline rule of personal property runs against that requirement, because nemo dat quod non habet, or in the formulation of Professor Charles W. Mooney, Jr., “one cannot give what one does not have,” so that “a purchaser receives what its transferor had.”⁴⁰

For public money the common law resolved the difficulty centuries ago. Lord Mansfield gave the rule its canonical form in Miller v. Race, holding that currency “never shall be followed into the hands of a person who bona fide took it in the course of currency, and in the way of his business.”⁴¹ American courts followed, and by 1879 the New York Court of Appeals could describe the rule as settled by a long line of cases, under which “the possession of money vests the title in the holder” as to those receiving it in due course of business and in good faith upon a valid consideration.⁴² The Uniform Commercial Code reinforces the position against secured parties, providing that a transferee of tangible money takes free of a security interest “if the transferee receives possession of the money without acting in collusion with the debtor in violating the rights of the secured party.”⁴³

Bank deposits begin from the opposite position, since in principle they are not negotiable at all. They are choses in action, transferable only by assignment, and an assignee takes subject to equities and cannot recover more than the assignor could have recovered. Account agreements commonly bar even that transfer without the consent of the bank. The Uniform Commercial Code nonetheless engineers a regime through which deposit value moves. Under Article 4A the beneficiary of a wire transfer receives a fresh obligation from its own bank, owing nothing to the history of the claim of the originator. Under Article 3 a check circulates as a negotiable instrument, passing “from hand to hand like cash,” and a holder in due course takes free of personal defenses.⁴⁴ Bank claims thus circulate on principles functionally analogous to those governing public money.

Ordinary contractual claims against non-bank payment providers begin from the same starting point. They lack the dedicated circulation mechanisms that Articles 3 and 4A supply for checks and covered bank funds transfers. Those Articles may govern a bank transfer used to fund or redeem a balance without making the claim against the provider negotiable. A transfer within the network of the issuer passes on the claim, with no mechanism to cleanse defects in title, security interests, or defenses. A transferee inherits whatever infirmity burdened the balance in earlier hands and may find it frozen, set off, or forfeited. The verdict on this element is categorical rather than graduated, since “these monetary instruments have no negotiability,”⁴⁵ and the worked applications that follow turn substantially on that single finding.

How Much Moneyness Do Treasury Securities and Money Market Fund Shares Possess?

Treasury securities furnish a sharp test, because economists and legal scholars alike treat them as supremely secure and several commentators have described them as possessing moneyness. Applying the four elements returns a more textured verdict. As to the nature of the claim, Treasuries are not redeemable on demand but promise a determined dollar amount at a fixed future date, and until that date the market price fluctuates with interest rates, so a prospective payee is unlikely to accept one at face value. Discharge capacity is gravely deficient, since no practice, custom, or surviving statute makes tender of a Treasury discharge a monetary obligation by itself. Finality and negotiability are strong yet confined, operating only inside the tiered book-entry system built atop Article 8 of the Uniform Commercial Code, a regime designed for trading financial assets rather than for extinguishing payment obligations. The verdict is that “despite their gilt-edged safety, Treasuries hold moneyness only in modest degree due to the shortcomings hindering the nature of the claim and acceptance in payment, while their finality and negotiability are siloed.”⁴⁶ Market practice corroborates it, since these obligations are “treated as cash equivalents and collateral of first resort in financial markets yet have no currency in the transactional economy.”⁴⁷

Shares in money market funds furnish a second test and reach the same destination by a different route. A money market fund (MMF) is a registered investment company that sells shares and buys short-dated securities, subject to the portfolio quality, maturity, and liquidity requirements of rule 2a-7, which restrict the risks that a fund may assume.⁴⁸ The case for their moneyness rests on regulated portfolios and redemption rights. Government and retail money market funds generally seek to maintain a stable one-dollar net asset value, while institutional prime and institutional tax-exempt funds use floating values.⁴⁹ The four elements nonetheless expose real deficiencies. A shareholder owns a stake in a portfolio and is entitled on redemption to approximately a proportionate share of the current net assets of the issuer, which is not a fixed sum. Investment losses can therefore impair the value of the shareholder's interest, including where the fund seeks to maintain a stable net asset value. The redemption right is itself conditioned, because the applicable regulations permit a fund to postpone payment for up to seven days and to impose liquidity fees.⁵⁰ Discharge capacity is absent altogether, as no ordinary payment mechanism transfers the shares themselves in discharge of an obligation. Payment using redemption proceeds instead depends on converting the investment into another monetary instrument. Their circulation is confined to the same Article 8 world that contains Treasuries. These comparatively safe instruments therefore converge on one verdict, since “MMF shares, like Treasuries, possess moneyness only in modest degree.”⁵¹ The historical example that follows supplies the converse configuration, with safety deficient and the other three elements comparatively strong.

What Did Nineteenth-Century Banknotes Reveal About Moneyness?

The framework is intended to serve monetary instruments past, present, and future, and antebellum banknotes supply the historical test. Before the Civil War each state-chartered bank issued its own paper currency, described by the leading treatise of the era as “promissory notes of incorporated banks, designed to circulate like money, and payable to bearer on demand.”⁵² These instruments were governed by contract law and by the statutory charter of the issuer, and they embodied claims enforceable by whoever held the paper for payment in specie across the counter.

On three of the four elements they performed well. They were not legal tender, yet they “pass[ed] current as if they were money only by virtue of a general understanding or tacit agreement,” and payment in them was good unless specially objected to at the time.⁵³ Delivery and acceptance discharged the underlying obligation, and the transaction was final at that moment. They were also highly negotiable, since a person taking one in good faith and for value acquired it free of prior claims and defenses, under the very rule the common law had forged for banknotes themselves.

Safety was the Achilles heel. Performance depended entirely on the continued solvency of the issuer, and recovery on default varied markedly. The baseline left holders as unsecured creditors, though some states elevated their claims to priority or backed the notes with deposited bonds. Public insurance was absent or confined to scattered state experiments, and issuers had no lender of last resort. Market discounts reflected creditworthiness alongside the costs of obtaining redemption. Notes of banks reputed solvent changed hands “at or very near their face value,” whereas those of weaker banks traded “at a steep discount,” and note reporters supplied information about their differing values.⁵⁴ The episode therefore demonstrates the ceiling rule in operation across an entire monetary system, for “in every case, the deficit in safety set the ceiling, which could not be raised by excellence in discharge capacity or negotiability.”⁵⁵ Stablecoins provide a further test of how a weakness in one element constrains the contribution of the others.

How Much Moneyness Do Stablecoins Possess?

Stablecoins possess moneyness in low degree under this framework. Their redemption claims remain unsettled, their safety is incomplete, and their discharge capacity is weak. The analysis below assesses those deficiencies and the partial protection afforded by negotiability. The underlying rules governing property, transfer, custody, and insolvency are examined in Stablecoins and Private Law.⁵⁶

Stablecoins present a methodological difficulty that the older instruments do not. Currency issues from a single sovereign source, and a comprehensive legal framework homogenizes bank deposits across thousands of issuing institutions. Stablecoins are more heterogeneous than either, and more heterogeneous even than non-bank payment claims, differing in issuer type, peg, stabilization mechanism, blockchain infrastructure, and contractual architecture. “Assessing the moneyness of stablecoins as a category presents a methodological challenge because these instruments are highly heterogeneous.”⁵⁷ The statutory framework of the Guiding and Establishing National Innovation for U.S. Stablecoins Act (GENIUS Act) constrains that variance for covered issuers without eliminating it. Capital levels, reserve composition, redemption terms, custody arrangements, and blockchain infrastructure remain material sources of difference. The following assessment concerns that statutory design, whose implementation is governed by the effective-date provisions of the Act.⁵⁸

Their position in the monetary hierarchy is not in doubt. “Stablecoins occupy an unambiguous position in this hierarchy: they are private money.”⁵⁹ The GENIUS Act makes the classification explicit, providing that “[i]t shall be unlawful to represent that payment stablecoins are backed by the full faith and credit of the United States, guaranteed by the United States Government, or subject to Federal deposit insurance or Federal share insurance.”⁶⁰

The nature and substance of the claim is where the analysis becomes difficult, and it is the element on which the others depend. Under the private ordering examined in the September 2026 manuscript, the redemption right originates in terms of service between the issuer and a small cohort of verified clients. The reported issuer figures were 819 for Tether and approximately 1,834 for Circle. The millions who acquire tokens on secondary markets hold no contractual relationship with the issuer and no direct redemption claim.⁶¹ Even for parties in privity the right is hedged, since issuers reserve extensive discretion to delay, suspend, or refuse redemption. “At present, the right of redemption is thus a highly conditional, unsecured contract claim, subject to broad issuer discretion.”⁶²

The GENIUS Act addresses the deficiency in a single terse provision embedded in a definition, under which an issuer “is obligated to convert, redeem, or repurchase for a fixed amount of monetary value.”⁶³ Three questions survive that provision. The first is whether the obligation is statutory or merely implied into the terms of the issuer. The second is what the right contains, since the Act is silent on its boundaries, the conditions of its exercise, the remedies for its breach, and the defenses available. The third is to whom the obligation runs, and in particular whether the right is embedded in the token so that it passes with control, or remains a separate asset assignable under the ordinary rules for choses in action. The textual case for the first reading is that redemption “is built into both what a stablecoin is and what each issuer must do, not into the terms a particular issuer chooses to offer.”⁶⁴ The case against tokenization is equally doctrinal, because embedding a right in a thing so that it passes with control fashions a new form of property, and the principle of numerus clausus holds that such forms exist only where law expressly recognizes them.

The Act strengthens the statutory safeguards for safety without eliminating the underlying exposures. It requires at least one-to-one reserve backing and restricts reserve reuse, subject to specified exceptions. Custodial services must satisfy section 10, while the Act supplies no general entitlement to a Federal Reserve master account. Reliance on commercial custodians consequently remains a source of credit and operational risk.⁶⁵ The bankruptcy provisions compound the exposure, being internally contradictory in excluding reserves from the estate while subjecting them to judicial administration, and in subordinating administrative expenses in a manner that casts doubt on the viability of reorganization.⁶⁶ A prudent holder must therefore assess the soundness of the issuer and of its reserve custodians before accepting payment, which is the precise burden that the safety element exists to eliminate.

Discharge capacity is the weakest element of the four. “Stablecoins have neither a statutory acceptance mandate nor finality rules, and the GENIUS Act entirely disregards these issues.”⁶⁷ Acceptance depends on express agreement between the parties, and fragmentation of the underlying infrastructure aggravates the problem, since a stablecoin held in a Solana wallet cannot be transferred directly to a creditor holding an Ethereum wallet without a bridging mechanism. Programmable money compounds it further, because a token transferable only to whitelisted counterparties is not fungible with one that moves freely.

The deficiency also concerns a clear legal framework for finality. “For direct transfers between parties, no statute or judicial precedent establishes when a stablecoin payment achieves finality.”⁶⁸ Intermediated transfers are worse, because no framework specifies when an intermediary becomes obligated, when the underlying obligation is discharged, or what recourse exists if the intermediary fails mid-transaction, and Article 4A cannot be applied by analogy to a population of intermediaries that includes regulated domestic exchanges, offshore platforms, and decentralized protocols alike. Article 8 can improve custody arrangements, but opting into that regime does not itself resolve when a stablecoin transfer discharges the underlying payment obligation. Widespread market practice within crypto-native ecosystems treats the blockchain as a substitute for legal finality, and the substitution does not hold, because “[t]he mere fact that stablecoins have found their way to the top of this technological heap does not . . . give them the legal attributes of money.”⁶⁹ Only negotiability remains to be assessed.

Negotiability is the one element on which the private law delivers, and it delivers only in part. Where the 2022 Amendments to the Uniform Commercial Code apply, a stablecoin may qualify as a controllable electronic record (CER) if it satisfies the control requirements and falls outside the statutory exclusions. Section 12-104(e) cuts off property claims to the record, so that a qualifying purchaser takes the token free of a prior owner's claim.⁷⁰ That protection does not by itself settle the treatment of the redemption right. Where the right remains a separate asset governed by a different regime, “a transferee can acquire clean title to the token, under Article 12, but obtain a redemption right subject to the issuer's defenses, claims, setoffs, and so on that arose while it was subject to the other private law regime.”⁷¹ The asymmetry is a direct consequence of the unresolved first element.

The composite verdict follows from the ceiling rule. The improvements supplied by the GENIUS Act leave the foundational element unsettled and the discharge element deficient. Those weaknesses constrain the degree of moneyness that the other protections can sustain. The private law architecture underlying these instruments is treated at length on the hub page for Stablecoins and Private Law, which addresses their property status, transfer, collateral use, intermediation, and insolvency treatment in detail.

Why Does the Private Law of Money Matter for Regulation?

The stablecoin analysis exposes a pathology that is not confined to stablecoins. Financial regulation proceeds regularly without adequate attention to the rights and duties on which regulated instruments rest, concentrating on prudential requirements, disclosure obligations, and licensing regimes while overlooking the contractual relationships, property rights, and transfer mechanisms that define the money claim. Professor Ricks candidly identified the scholarly dimension of the gap, observing that “[p]ayment law . . . has become something of a scholarly backwater.”⁷²

The GENIUS Act illustrates the cost. Its bankruptcy provisions fail precisely because Congress attempted to retrofit special protections onto a claim whose fundamental legal nature was not first resolved. “Crucially, beneath all three unresolved questions lies a single failure. Congress legislated without settling the legal character of the redemption right . . . . This is the Act's private law blind spot at its starkest.”⁷³ The same diagnosis applies to the negotiability defect, which is “yet another manifestation of the private law 'blind spot,' whereby public law protections are built atop a claim whose private law nature Congress never addressed.”⁷⁴

The pathology is general rather than particular to this statute, since “financial regulation has a tendency to layer public-law protections onto instruments whose private-law nature lawmakers have not first identified, much less resolved.”⁷⁵ The more coherent sequence begins with how an instrument functions, what capabilities it possesses, and what rights holders actually hold, and allows the regulatory treatment to follow as a consequence of those findings.

Five targeted interventions would raise the moneyness of stablecoins if policymakers chose to pursue that end. Three address safety, namely a path to limited Federal Reserve master accounts for qualifying issuers, an industry-funded insurance mechanism that would reduce the need for holder due diligence, and a secured-interest regime to replace the flawed bankruptcy provisions of the Act. The fourth addresses discharge capacity through finality rules specifying when a transfer conclusively extinguishes the underlying debt, for direct and intermediated transactions alike. The fifth resolves the ambiguity surrounding redemption by providing expressly that the right is enshrined in the token, so that control of the digital asset carries the entitlement to demand redemption.⁷⁶ Whether stablecoins should occupy a place in the monetary hierarchy is a political question distinct from the analytical one, and the interventions describe what greater moneyness would require rather than whether it ought to be pursued.

Frequently Asked Questions

What is moneyness?

Moneyness is the degree to which an instrument is able to operate as money. It is a scalar legal attribute rather than a binary category, and it depends on the interaction of public-law protections with private-law rights. Four elements constitute it: the nature and substance of the claim, its safety, its discharge capacity, and its negotiability. Under this account, the elements contribute multiplicatively. The weakest limits the whole, although improvement elsewhere can bring an instrument closer to that limit.

What are the four elements of moneyness?

The first and foundational element is the nature and substance of the claim, which covers the identity of the issuer, whether the interest acquired is proprietary or personal, the source from which it springs, and the content of the undertaking. The second is safety, meaning confidence that the promise will be honored and that recovery will follow if it is not. The third is discharge capacity, which asks whether creditors will accept the instrument in satisfaction of obligations and whether transfers achieve legal finality. The fourth is negotiability, which asks whether recipients take free of competing claims and defenses.

What is the difference between public money and private money?

Public money is issued by the state and comprises currency and central-bank reserves in the United States. Its legal nature is sui generis, because it requires no performance beyond acceptance of the instrument itself and creates no contractual relationship with the issuer. Private money consists of contractual claims against non-sovereign issuers, under which the holder acquires a personal right and bears counterparty risk. Private money is the larger part of the monetary system by a wide margin, estimated at $19.4 trillion against $5.5 trillion of currency and reserves combined in 2022.

Why are bank deposits safer than other private money?

A bank deposit is an unsecured contractual claim that four layers of public law transform into the safest form of private money. Federal deposit insurance covers up to $250,000 per depositor, per institution, and per capacity and right in which deposits are held. Access to the discount window addresses temporary funding shortfalls. Prudential supervision imposes capital and liquidity requirements and ongoing examination. A tailored resolution regime displaces the Bankruptcy Code, so that deposits are typically assumed by another institution or paid out directly. Non-bank claims benefit from none of these layers in full.

Are Treasury securities money?

Treasury securities possess moneyness only in modest degree despite their safety. They are not redeemable on demand but promise a fixed amount at a future date, and their market price fluctuates with interest rates, so a payee is unlikely to accept one at face value. No practice or statute makes their tender discharge a monetary obligation. Their finality and negotiability rules are strong but confined to the book-entry system built on Article 8 of the Uniform Commercial Code, which governs trading rather than payment.

Are money market fund shares money?

Money market fund shares possess moneyness only in modest degree. Rule 2a-7 constrains portfolio risk. Government and retail funds generally seek a stable one-dollar net asset value, while institutional prime and institutional tax-exempt funds use floating values. A shareholder nonetheless owns a proportionate stake in a portfolio rather than a fixed sum. The redemption right may be postponed for up to seven days and subjected to liquidity fees. No ordinary payment mechanism transfers the shares themselves in discharge of an obligation. Spending redemption proceeds instead requires conversion into another monetary instrument.

Are stablecoins money?

Stablecoins are private money, and they possess moneyness in low degree. Assessed against the four elements, the nature of the redemption claim remains unsettled after the GENIUS Act on three points: whether the obligation is statutory or contractual, what it contains, and whether it travels with the token. Safety remains incomplete: reserve custody can introduce credit and operational exposures, and the bankruptcy provisions raise unresolved questions about the rights of holders and the viability of reorganization. Discharge capacity is the weakest element, because the Act supplies neither an acceptance mandate nor a dedicated framework fixing the finality of direct and intermediated payments. Negotiability is delivered for the token under Article 12 of the Uniform Commercial Code but not necessarily for the redemption right.

Why does private law matter to financial regulation?

Financial regulation tends to layer public-law protections onto instruments whose private-law nature lawmakers have not first identified or resolved. The bankruptcy provisions of the GENIUS Act illustrate the cost, because Congress attempted to retrofit protections onto a claim whose legal character it never settled. The more coherent sequence establishes how an instrument functions and what rights holders actually hold, then allows regulatory treatment to follow.