The $6 trillion showdown: why stablecoin interest has Washington stuck
The fiercest battle in U.S. finance right now is not about Bitcoin, Wall Street bonuses, or bank capital rules. It’s about one seemingly technical question buried in legislative text:
Should dollar stablecoins be allowed to pay their holders interest?
On one side, the banks warn that interest-bearing stablecoins would rip trillions of dollars out of the traditional deposit system and cripple the way America funds loans. On the other, crypto firms argue that banks are simply defending an outdated monopoly on the returns generated by other people’s cash.
Caught between them is the CLARITY Act, the long-awaited market-structure bill meant to define how digital assets coexist with the legacy system. And as of late June 2026, that bill is stuck – almost entirely because of this single “yield clause.”
How the fight exploded in Washington
The week of June 29, 2026, was supposed to be a breakthrough. The CLARITY Act was moving toward a Senate floor vote. Instead, everything unraveled at once:
– Coinbase, after spending two years promoting the legislation, publicly withdrew its support.
– Senate Banking Committee chair Tim Scott postponed the markup.
– President Trump publicly blasted the banks campaigning against stablecoin yield, accusing them of undercutting what he presents as his signature crypto achievement.
All three shocks were driven by one unresolved issue: whether a payment stablecoin may share its reserve income with the people who hold it.
This is not some obscure accounting detail. It’s a fight over the structure of U.S. money and credit, and by extension, over a pot of value that one side pegs at roughly six trillion dollars.
Moynihan’s $6 trillion warning
Bank of America CEO Brian Moynihan has put a stark number on the table: he argues that if digital dollars are allowed to pass through the interest they earn, as much as 6 trillion dollars of bank deposits could migrate into stablecoins and similar instruments.
That number isn’t random. It roughly corresponds to deposits that are:
– Large enough to move,
– Held by rate-sensitive customers, and
– Earning little or nothing in a bank account today.
The modern U.S. lending system is built on this asymmetry. Banks fund loans with deposits for which they pay savers very little, then invest those funds in higher-yielding assets. The spread between what they earn and what they pay is a cornerstone of their business model.
Anything that gives depositors a better default option for holding dollars – especially one that’s fully backed by Treasury bills and settles in seconds through an app – is seen as a direct attack on the cheapest funding source in traditional finance.
Both sides understand that perfectly. That is why neither is backing down.
The legal backdrop: GENIUS vs CLARITY
The crypto industry is not coming into this fight empty-handed. The GENIUS Act, signed in 2025, already created a regulatory framework for payment stablecoins. Under GENIUS:
– Issuers must fully back their tokens with high-quality liquid assets such as Treasuries and cash equivalents.
– Crucially, they are explicitly prohibited from paying interest or yield to stablecoin holders.
That last provision was not accidental. It was pushed hard by the banking lobby and ultimately enshrined in law.
The result is a peculiar economic arrangement:
– Tens of millions of users park hundreds of billions of dollars in stablecoins.
– Issuers invest those reserves in short-term government securities.
– The entire “risk-free” return on that pool flows to the issuers and their partners, not to the people whose money it is.
At 2026 short-term interest rates, a reserve portfolio of Treasury bills and repo can earn on the order of 4% annually – roughly four cents per year on every dollar, paid by the U.S. government. That is real money at the current scale of the stablecoin market.
Tether’s profits, Circle’s revenue-sharing deal with Coinbase, and the economics behind the consortium design for Open USD all rely on capturing this spread.
The CLARITY Act is where the industry is trying to reopen the question GENIUS seemed to settle: should that yield be locked to issuers forever, or can it be shared with token holders?
Where stablecoin yield actually comes from
To understand the fight, you have to understand what a dollar stablecoin is, economically.
A typical payment stablecoin is:
– A bearer claim on a pool of reserves.
– Those reserves sit primarily in short-term Treasuries, overnight repo, and cash.
– The issuer promises that each token can be redeemed for one dollar, on demand, at par.
Since the issuer is not lending out customer money, but rather holding it in government securities, the income comes from one place:
The U.S. government pays interest on Treasury bills and repo. The issuer collects that interest.
From there, there are three theoretical options for who gets the benefit:
1. The issuer keeps all of it (the current baseline under GENIUS).
2. The issuer shares some or all of it with token holders (the crypto lobby’s goal in CLARITY).
3. The government recaptures part of the spread via fees, taxes, or an explicit public-money design (not seriously on the table yet, but increasingly part of academic debate).
Crypto advocates argue that in any fair system, the person who provides the dollar should receive the income it generates – similar to the way money market funds operate. Banks counter that paying stablecoin holders directly turns these products into de facto bank accounts without banking regulations, and into “narrow banks” that threaten the broader credit system.
Crypto’s case: this is people’s money, not the banks’
The crypto industry’s argument is straightforward:
– If you supply the capital, you should be entitled to the return.
– A token that functions like a cash-equivalent fund should be allowed to pass through its portfolio income, just as traditional money market funds do.
– Blocking yield while letting issuers keep the spread is a pure transfer of public and user value to a handful of private firms and their distribution partners.
Exchanges and fintech apps have already tried to approximate yield with loyalty-style programs that give users “rewards” for holding certain stablecoins. To banks and many regulators, these look like interest by another name – a regulatory workaround they are keen to shut down.
In the crypto worldview, prohibiting yield does not protect consumers. It just locks them into a system where:
– Banks underpay on deposits,
– Stablecoin issuers capture reserve income, and
– Ordinary users subsidize both.
Seen from that angle, the anti-yield rule is not prudential regulation – it is protection of an incumbent funding model.
Banks’ case: this is a slow-motion bank run in disguise
The banks tell a very different story.
To them, a stablecoin that:
– Pays around 4% on dollar balances,
– Invests solely in Treasuries and other government-backed instruments,
– Offers instant settlement and 24/7 transfer,
is no longer just a “payment token.” It is functionally a narrow bank – an institution that takes deposits, holds only safe assets, and does not make loans.
U.S. regulators have resisted narrow bank charters for decades for one reason: a system full of narrow banks would pull funding out of traditional lending, particularly for households and small businesses that rely on banks rather than capital markets for credit.
From this vantage point, paying interest on stablecoins is the spark for a gradual but relentless run:
– Rate-sensitive customers move cash from banks into yield-bearing stablecoins.
– Banks lose cheap deposits and have to pay up to compete, compressing margins.
– Over time, less money is available for longer-term, riskier lending that supports the real economy.
Banks insist that this is not about “protecting profits,” it is about preserving the credit transmission system. Crypto proponents counter that this is just a more sophisticated way of describing “we don’t want to pay market rates on deposits.”
Both narratives contain elements of truth, which is why the clash is so difficult to resolve.
The dueling studies: $6.6 trillion vs $2.1 billion
To give policymakers numbers to cling to, each side has produced its own research.
On one end, a study aligned with the banking lobby – drawing on analysis associated with groups like the American Bankers Association (ABA) – paints a worst-case scenario of up to 6.6 trillion dollars migrating from deposits into yield-bearing stablecoins and related instruments over time. That scenario assumes:
– Stablecoins remain fully backed by Treasuries,
– Yield is passed through broadly to users,
– Frictions to switching (like on-ramps and regulation) decline steadily.
On the other end, crypto-friendly economists tied to the Council of Economic Advisers (CEA) circle have circulated work suggesting a vastly smaller impact: on the order of 2.1 billion dollars in effective net funding loss to banks under more conservative assumptions:
– Only a subset of sophisticated users move,
– Banks respond by raising deposit rates selectively,
– Some stablecoin balances remain effectively idle, functioning as payment float rather than savings.
Both papers use plausible models, but they also embed their own biases:
– The bank-aligned work often assumes that stablecoins are close substitutes for all liquid deposits, maximizing estimated outflows.
– The crypto-aligned work assumes partial adoption, sticky consumer behavior, and a much smaller “addressable” base.
In practice, the truth is likely to depend on specifics: how generous yield-sharing is, whether there are caps or tiers, how banks react, and whether regulators allow stablecoins to be deeply embedded in mainstream apps used by ordinary households.
Davos: when the argument turned personal
The technical fight burst into public view earlier this year in Davos, where senior bank executives and crypto founders shared panels and private dinners. What had been quiet lobbying turned openly confrontational.
Bank CEOs repeated their warnings about disintermediation in front of global policymakers. Crypto leaders fired back that banks were essentially demanding a legal right to underpay savers while pocketing the gains from higher interest rates.
Several attendees described the atmosphere as unusually sharp for what is normally a carefully choreographed event. One detail mattered for Washington: lawmakers saw which side the global financial elite unambiguously backed – and which side had the ear of a U.S. president eager to brand himself as pro-innovation.
The Davos clash did not change anyone’s mind, but it removed any illusion that a quiet compromise would emerge on its own.
How the yield clause took CLARITY hostage
The CLARITY Act was supposed to be the grand bargain:
– Crypto firms would get regulatory certainty and a clear path to operate compliant stablecoins and digital asset markets in the U.S.
– Banks would get guardrails that, in theory, prevented systemic risk and preserved their role in the credit system.
For months, staffers worked on a compromise yield provision. One floated version would:
– Ban any passive, guaranteed interest on stablecoin balances,
– But allow “activity-based rewards” – bonuses tied to using tokens for payments, trading, or other on-platform behaviors.
To banks, that looked like a backdoor: any sufficiently creative fintech could turn activity-based rewards into something that felt like interest. To crypto, it felt like a watered-down half-measure that preserved issuer spread capture while dressing up minor loyalty points as a win for users.
As lobbying intensified, each side raised the stakes:
– Banks hinted that they would oppose the entire bill if it opened any path to user yield, even indirectly.
– Major crypto players, including Coinbase, concluded that endorsing CLARITY without meaningful yield reform would legitimize the status quo they most object to.
The result: no one is willing to accept language the other side would actually live with. CLARITY, intended as the framework for an integrated market, is frozen by a single line about who is allowed to pay interest.
The Regulation Q rhyme
For older policymakers, this fight has an echo: Regulation Q.
For decades in the 20th century, Regulation Q capped the interest banks could pay on deposits. The intention was to prevent destructive competition for funds and limit risk-taking. The effect was:
– Savers were stuck with low-yield deposits even when market rates rose.
– Financial innovation exploded outside the cap, in the form of money market funds and other vehicles that paid closer to market rates.
When those caps were finally dismantled, the banking industry warned of chaos. Instead, deposits became more expensive, but the system adjusted – and savers benefited from higher returns.
Pro-yield crypto advocates argue that today’s prohibition on stablecoin interest is Regulation Q in digital clothing: a rule that blocks competition for household savings under the banner of safety, while accelerating innovation elsewhere.
Bankers reply that the analogy fails because stablecoins are fundamentally different:
– They can move globally at light speed.
– They can be used as collateral in leverage-heavy markets.
– They exist in a regulatory gray zone that, in their view, amplifies systemic risk.
The rhyme is there, but so are the differences – enough for each side to claim history on its side.
The banks’ quiet hedge
While banks shout about the dangers of stablecoin yield in public, they are also quietly preparing for a world in which they lose this battle.
Behind the scenes, several large institutions are:
– Experimenting with bank-issued tokenized deposits that behave like stablecoins but remain inside the insured banking perimeter.
– Exploring consortium models where groups of banks jointly issue “on-chain dollars,” sharing reserve management and compliance.
– Designing white-label products that let fintechs and even crypto platforms offer on-chain dollar balances ultimately backed by regulated banks.
In some of these designs, the bank keeps the interest margin, mimicking today’s deposit model. In others, banks explore sharing part of the yield in exchange for sticky on-chain funding and a foothold in digital finance.
In other words, even as they warn of systemic risk if stablecoins pay yield, banks are building infrastructure that would allow them to do exactly that – provided they control the pipe.
What each side is missing
Both camps are clinging to partial truths.
Crypto underestimates:
– How dependent many parts of the real economy still are on bank-intermediated credit.
– The political sensitivity around anything that looks like a slow bank run, even if it’s “market-driven.”
– The operational and liquidity challenges of running massive, on-chain dollar systems that must remain redeemable at par through stress.
Banks underplay:
– The extent to which depositors have already figured out that they are being underpaid.
– How much technological convenience and transparency matter to users who are increasingly comfortable with digital-native money.
– The credibility problem created when they fight to protect spreads while presenting the fight as purely about “stability.”
A more honest debate would ask:
– How much migration out of deposits is actually dangerous for credit creation?
– What limits or structures could allow yield-sharing without triggering destabilizing flows?
– How can on-chain dollars be integrated with bank balance sheets in a way that keeps credit flowing while treating savers fairly?
Possible endgames
From here, several scenarios are plausible.
1. Hard bank win: no yield, CLARITY passes narrowly
Congress ratifies a strict ban on any form of yield-sharing for payment stablecoins. CLARITY passes with language that cements the GENIUS model.
– Banks preserve their funding advantage.
– Stablecoin issuers keep their spread-rich economics.
– Crypto firms pivot to structures outside the U.S. or to more complex, quasi-yield products that live in regulatory gray areas.
2. Soft compromise: limited, tiered yield
Lawmakers craft a regime where:
– Small balances (for example, under a certain threshold) can earn regulated, capped interest.
– Larger balances face stricter limits or enhanced oversight.
– Banks gain access to similar tools for tokenized deposits.
This would reduce the most dramatic outflow risks while acknowledging that users deserve some share of the return on their money.
3. Crypto win: broad yield permission with prudential guardrails
Under this scenario, stablecoins are allowed to pay market-based yield, provided they:
– Maintain conservative, transparent reserve portfolios.
– Operate within a robust supervisory regime.
– Meet liquidity and stress-testing standards akin to money market funds.
Deposits become more expensive for banks. In response, banks either shrink or aggressively adopt on-chain models themselves. Over time, the line between “bank deposits” and “digital dollars” blurs.
4. Regulatory stasis and offshore drift
The fight stays unresolved. CLARITY stalls indefinitely or passes in a gutted form.
– U.S.-domiciled issuers remain barred from paying interest.
– Offshore stablecoins and synthetic dollar products that can pay yield grow rapidly.
– American users access them anyway through intermediaries, while U.S. regulators lose direct oversight over a growing share of dollar-like instruments.
What’s really at stake
Underneath the acronyms and lobbying, the question is simple:
When the U.S. government pays interest on short-term debt, who ultimately benefits – the banks, the stablecoin issuers, or the people whose dollars fund it all?
Stablecoin yield is not just a product feature. It is a referendum on:
– Whether depositors should have digital-native alternatives that pay something close to a fair return.
– How far lawmakers are willing to go to protect the traditional credit system from technological competition.
– Whether dollar dominance in the digital era will be anchored in bank accounts, tokenized instruments, or some hybrid of the two.
The six trillion dollars at the center of this standoff is not theoretical. It is the pool of savings that funds mortgages, business loans, credit lines, and government debt.
Washington’s decision on whether stablecoins can share their yield will help determine who controls that pool – and on what terms – for the next generation of American finance.