The U.S. Treasury’s decision in August to increase purchases of long-dated government bonds was small in dollar terms. The policy implications are harder to dismiss.
On Aug. 19, Treasury announced that it would raise the maximum size of its liquidity-support buybacks in the 10-to-20-year and 20-to-30-year sectors from $2 billion to at least $4 billion per operation, starting Sept. 9 and continuing through the current refunding quarter.[1] Treasury described the move in narrow terms: greater liquidity support for long-dated nominal securities, especially older, off-the-run bonds that tend to trade less efficiently than current benchmark issues.
Markets immediately looked beyond that explanation.
With long-term borrowing costs elevated and Treasury Secretary Scott Bessent placing unusual emphasis on financing costs, the larger operations invited comparisons with a “Treasury Twist,” a fiscal version of earlier Federal Reserve efforts to influence the shape of the yield curve.
That comparison has limits.
Treasury has set no target for long-term yields. It has not promised to buy whatever quantity of securities may be needed to defend a particular interest rate. It continues to auction long-dated debt on its regular schedule. Treasury’s own documentation says liquidity-support buybacks are designed to give market participants a predictable opportunity to sell less-liquid off-the-run securities and are not currently intended to serve as an emergency market-stabilization facility.[2]
Even so, the change matters. Treasury is becoming more active at the long end of the government bond market just as another major policy shift is creating a potentially large and structurally different class of buyers at the opposite end of the curve: regulated stablecoin issuers.
That connection has received less attention than it deserves.
Under the GENIUS Act framework, payment stablecoins must be backed one-for-one by highly liquid reserve assets. Eligible Treasury securities generally must have 93 days or less remaining to maturity.[11] As stablecoins grow, their reserve requirements therefore create demand concentrated in Treasury bills and other short-duration government instruments rather than in 10-, 20- or 30-year bonds.
Stablecoins are unlikely to solve Treasury’s long-duration problem directly. They could, however, change the economics of how the government finances itself across maturities.
If the stablecoin market eventually grows into the trillions of dollars, private digital dollars could become a meaningful and persistent source of demand for short-term federal debt. That would give Treasury somewhat greater flexibility over the maturity profile of issuance, even as its buyback program supports market functioning farther out on the curve.
The relationship is indirect, but potentially important. Stablecoins are beginning to connect the infrastructure of digital payments with the mechanics of sovereign debt management.
Treasury Has Started Touching the Long End
Treasury’s buyback program was already in place before the August announcement. It was established as a regular debt-management tool with two broad purposes: improving secondary-market liquidity and helping manage Treasury’s cash position.
The liquidity-support component concentrates on off-the-run securities, or older issues that have been replaced by newer benchmark securities with similar maturities. These bonds usually trade less actively than on-the-run issues. By providing a recurring source of demand, Treasury can make the securities easier to transact and reduce the balance-sheet burden on dealers that warehouse them.[2]
The Aug. 19 announcement materially increased the maximum size of operations in the two longest nominal sectors. Treasury said purchases in the 10-to-20-year and 20-to-30-year buckets would rise from a maximum of $2 billion to at least $4 billion per operation.[1]
The broader refunding context is important. Earlier in August, Treasury had said it expected to buy as much as $38 billion of off-the-run securities across maturity buckets for liquidity support during the quarter. It also planned up to $25 billion of purchases in short-dated securities for cash-management purposes.[3]
At the same time, Treasury maintained its regular auction schedule. The August refunding included $42 billion of 10-year notes and $25 billion of 30-year bonds, and officials said nominal coupon and floating-rate-note auction sizes were expected to remain broadly unchanged for at least the next several quarters.[3]
Those details matter because they argue against interpreting the program as straightforward yield suppression.
Treasury is buying older long-duration securities while continuing to sell newly issued long-duration debt. The official goal remains market functioning rather than a declared attempt to place a ceiling on borrowing costs.
Still, liquidity has a price.
Secondary-market conditions affect primary issuance because investors generally demand additional compensation to hold securities that are difficult or costly to trade. Improving liquidity in older bonds can therefore lower part of the premium embedded in yields, even if that effect is incremental.
A buyback program can influence financing conditions without becoming a monetary-policy instrument.
The distinction becomes more important as the size and frequency of the operations increase.
Why This Is Not Yield Curve Control
Formal yield curve control has a much more explicit structure.
Under YCC, a monetary authority identifies a desired yield, or range of yields, at a particular maturity and commits to transact in whatever scale is necessary to defend that objective. The promise to defend the rate is the core of the policy. Once the commitment becomes credible, investors themselves may help enforce the target because they expect the official buyer to step in when yields move beyond the tolerated range.
Treasury’s current buyback program has none of those characteristics.
There is no stated ceiling for the 10-year, 20-year or 30-year Treasury yield. There is no open-ended purchase commitment. Operations have announced maximum sizes. Long-term auctions continue, and TreasuryDirect says the program is not currently designed to respond to acute episodes of market stress.[2]
The institutional difference between Treasury and the Federal Reserve is equally important.
A central bank can purchase government securities by expanding its own liabilities. Treasury cannot create central-bank money. When Treasury buys back an outstanding bond, the broader federal financing requirement remains and ultimately has to be met through the government’s cash balance, tax receipts or additional borrowing.
Debt management is therefore about the composition, timing and maturity of public liabilities. It operates through a different balance sheet from monetary policy.
Describing the August move as YCC would obscure those differences.
The more interesting issue is how investors begin to interpret Treasury’s behavior over time.
Suppose Treasury were to expand long-duration buybacks repeatedly whenever yields approached levels viewed as fiscally uncomfortable. Even without announcing a formal target, investors could begin to infer a policy reaction function. Expectations of future Treasury purchases might then affect long-term bond pricing before any operation took place.
That would narrow the economic distance between liquidity management and implicit yield management, even if the institutional framework remained different from central-bank YCC.
There is no evidence that Treasury has adopted such a regime. The possibility matters because markets often price expected policy before policy becomes formal.
Treasury’s own advisers have shown awareness of the risk. In discussing potential expansion of the buyback program, the Treasury Borrowing Advisory Committee warned that larger operations concentrated in particular sectors could be interpreted as an attempt to manage the weighted-average maturity of the debt. Committee members emphasized that issuance should remain Treasury’s main tool for shaping the maturity profile.[5]
That caution is increasingly relevant.
The Missing Half of the Treasury Twist Is at the Short End
Long-end buybacks attract attention because long-term Treasury yields feed directly into mortgage rates, corporate financing costs and asset valuations.
The funding side of the equation receives less attention.
Treasury manages a vast portfolio of liabilities with maturities ranging from a few weeks to 30 years. A decision affecting one part of the curve cannot be understood fully without considering the demand available elsewhere.
That is where stablecoins begin to matter.
The GENIUS Act created a federal framework for payment stablecoins and requires qualifying issuers to maintain identifiable reserves backing outstanding tokens one-for-one. Those reserves can include cash, bank deposits, qualifying repurchase agreements, government money-market funds and Treasury bills, notes or bonds with no more than 93 days remaining to maturity.[11]
The maturity restriction is consequential.
A $1 trillion regulated stablecoin market would not produce $1 trillion of broad demand across the Treasury curve. The reserve pool would be concentrated in cash-like assets and very short-dated government securities.
Stablecoin issuers are therefore natural buyers of the front end, not the long end.
Treasury has already acknowledged the importance of this changing buyer base.
In November 2025, Bessent said the stablecoin market was roughly $300 billion and could potentially grow tenfold by the end of the decade. He grouped stablecoins with money-market funds as important buyers of Treasury bills and said Treasury would respond if structural demand for particular securities or maturities changed significantly.[4]
That point is central to the broader argument.
Treasury’s issuance strategy is built around regularity and predictability, but relative demand still matters. A persistent increase in buyers for one section of the curve can change the relative cost of issuing there.
If stablecoins add durable demand for bills, short-term financing may become marginally cheaper than it otherwise would have been.
That does not mean Treasury is financing long-end buybacks through stablecoins. There is no evidence of a coordinated strategy of that kind.
The connection operates through market structure. Stablecoin regulation changes the composition of private demand. Treasury, in turn, observes that demand when deciding how best to fund the government.
Stablecoins Are Already Affecting Treasury Bill Prices
The mechanism is no longer purely theoretical.
Research by Rashad Ahmed and Iñaki Aldasoro at the Bank for International Settlements offers some of the clearest empirical evidence to date. Their working paper, first published in 2025 and revised in June 2026, estimates that stablecoin issuers purchased nearly $35 billion of Treasury bills during 2025.[7]
By December 2025, stablecoins held more than $270 billion in combined assets. The researchers found that their short-term U.S. securities holdings had become comparable in scale with those of several meaningful institutional investor groups.[7]
More significant is the effect on yields.
The paper estimates that a $3.5 billion inflow into stablecoins lowered the three-month Treasury bill yield by about 0.71 basis point immediately. The cumulative decline reached roughly 4 basis points within 10 days, with a larger trough later in the response.[7]
The effect became stronger during periods when Treasury-market intermediation was strained and as the stablecoin sector grew larger.
The researchers found little corresponding effect farther out on the Treasury curve.[7]
That result is critical.
Stablecoins are not emerging as replacement buyers for 30-year bonds. Their direct price impact appears concentrated where their reserves are concentrated: the front end.
At first glance, that would seem to weaken any connection between stablecoins and Treasury’s long-end buybacks.
In fact, it clarifies the channel.
Stablecoin issuers do not need to buy 30-year securities for the industry to matter to Treasury debt management. The relevant question is whether expanding bill demand changes the government’s relative funding costs and therefore widens the set of issuance choices available to debt managers.
A deeper buyer base for bills can make short-term financing incrementally more attractive. At the same time, long-end buybacks can improve liquidity in older coupon securities. The operations are distinct and governed by different policy decisions, but their effects meet inside the broader structure of federal financing.
A Fiscal-Financial Feedback Loop
The relationship becomes more important if the stablecoin market expands substantially.
Greater use of private digital dollars increases the pool of reserve assets managed by issuers. Regulation steers much of those reserves toward Treasury bills and closely related instruments. Additional demand can push down front-end government yields. Treasury then sees a deeper structural buyer base when deciding how to distribute issuance across maturities.
If government financing shifts even modestly toward shorter maturities, the importance of stablecoin demand rises further.
That creates the potential for a fiscal-financial feedback loop.
Stablecoin adoption increases demand for Treasury bills. Greater bill demand lowers short-term government funding costs at the margin. Lower relative costs give Treasury more flexibility over the maturity mix of issuance. Greater reliance on the front end then makes stablecoin reserve demand more important to debt management.
Each step requires qualification.
Treasury has repeatedly said its current liquidity-support buybacks are not designed to alter the overall maturity profile of federal debt.[2] TBAC has likewise emphasized that issuance, rather than buybacks, should remain the principal tool for maturity management.[5]
The current program therefore should not be cited as proof that Treasury has already embraced such a feedback loop.
The argument is conditional and forward-looking.
Its significance depends on scale. A $300 billion stablecoin market is meaningful, but still small relative to the Treasury market. A stablecoin sector holding $1 trillion, $2 trillion or $3 trillion in reserve assets would occupy a different place in the financial system.
Federal Reserve Governor Stephen Miran illustrated the potential scale in a November 2025 speech. Citing the inter-quartile range of private-sector estimates compiled by Federal Reserve staff, he said stablecoin assets could reach roughly $1 trillion to $3 trillion by the end of the decade. He argued that such growth could create a major new source of demand for Treasury bills and other liquid dollar assets, with potential effects on federal borrowing costs and even the neutral interest rate.[9]
Those projections are uncertain. The structural relationship is easier to identify than the eventual magnitude.
The Hard Question Is Whether Stablecoin Demand Is Really New
Gross reserve balances can overstate the benefit to Treasury.
Consider an investor who withdraws $1,000 from a government money-market fund and uses the money to buy a regulated stablecoin. The issuer then invests the $1,000 reserve in Treasury bills.
Stablecoin reserves have increased by $1,000. Yet overall Treasury demand may have changed little because the money-market fund could have held the same bills before the transfer.
The ownership chain has changed. The underlying asset allocation may not have.
TBAC has explicitly identified this substitution effect. Its April 2025 Digital Money presentation said stablecoin growth could create a new source of demand for short-maturity Treasury securities, but some of that apparent demand could be offset if stablecoins replace bank deposits, money-market funds or other cash-like instruments.[6]
The distinction between gross demand and net demand is fundamental.
Stablecoin growth funded by foreign users who previously had limited access to dollar securities could create genuinely incremental demand for U.S. government debt. Growth funded mainly by existing American investors already holding Treasury-linked assets would instead rearrange the financial plumbing.
Miran has argued that the international channel may be particularly important. Stablecoins give users outside the U.S. access to digital dollar balances through public blockchain infrastructure, potentially reaching savers who lack convenient access to dollar bank accounts or brokerage services.[9]
If that argument holds, stablecoins could become a new distribution channel for U.S. government liabilities abroad.
Their importance to Treasury financing would then extend well beyond crypto markets.
There Is a Balance-Sheet Cost Elsewhere
The substitution question also points to the banking system.
When a stablecoin purchase is funded by withdrawing a bank deposit, the transaction can remove a deposit liability from a bank and replace it with a stablecoin liability backed partly by Treasury securities.
Treasury demand may rise while bank funding falls.
The broader effect depends on how banks respond. Some may replace deposits with wholesale funding. Others may reduce lending, change asset composition or compete more aggressively for deposits. The consequences for private credit are therefore more complicated than the simple claim that more stablecoins create more Treasury buyers.
TBAC has said the impact on bank deposits deserves close monitoring.[6]
Miran has raised the same issue from a monetary-policy perspective. A shift from deposits into stablecoins could alter financial intermediation and the transmission of policy even as it generates additional demand for liquid dollar assets.[9]
Stablecoin policy therefore cannot be judged solely by its impact on federal financing.
The same regulatory system that creates a new class of Treasury buyers can redistribute funding across the private financial sector.
The Feedback Loop Can Reverse
Structural demand is valuable until the liabilities behind it begin to shrink.
Stablecoin reserves exist because stablecoins are outstanding. If users redeem tokens in large amounts, issuers must produce liquidity.
For a well-managed issuer holding very short-dated Treasury bills, the process should be manageable under normal conditions. Bills mature quickly, repo markets can provide cash, and liquid securities can be sold.
At sufficient scale, however, large redemptions could transmit stress back into the markets that benefited from stablecoin growth.
Federal Reserve researchers have highlighted that growing interconnection. Stablecoin market capitalization rose by roughly 50% during 2025 and reached about $317 billion by early April 2026. A Fed analysis noted that safer and more liquid reserve structures can reduce credit risk at individual issuers while increasing the links between stablecoins and traditional financial markets.[8]
Those connections matter most when confidence deteriorates.
A large stablecoin sector could support Treasury demand during periods of growth and become a source of Treasury sales, deposit withdrawals or repo demand during periods of contraction.
That introduces procyclicality.
During normal conditions, inflows deepen demand for safe assets. During a redemption wave, the same mechanism can reverse.
Holding safer reserves reduces credit risk. It does not eliminate systemwide liquidity risk.
Treasury and the Fed Could Pull on Different Parts of the Curve
A more active Treasury also raises a broader institutional question: where does debt management stop and monetary transmission begin?
The Federal Reserve sets the overnight policy rate and influences financial conditions across markets. Treasury determines how much the government borrows and at what maturities. On paper, the responsibilities are separate.
In markets, they interact.
If Treasury actions reduce liquidity premiums or duration pressure at the long end while the Fed is trying to keep financial conditions restrictive, the two institutions could create competing effects.
The current buyback program is too small to establish that such a conflict exists. Treasury continues to describe the operations as liquidity support and continues to issue long-dated securities.[1][3][10]
Still, the boundary deserves attention.
Stablecoins make the relationship more complicated because their balance sheets can affect short-term Treasury yields without purchases being made by either Treasury or the Fed.
Miran has argued that sufficiently large stablecoin demand could affect the supply of loanable funds and place downward pressure on the neutral rate of interest.[9] The BIS evidence is more narrowly focused, but already finds a measurable relationship between stablecoin inflows and Treasury bill yields.[7]
The result is a more layered monetary system.
The Fed influences money-market rates through policy. Treasury decides how much short-term debt to sell. Stablecoin issuers respond to private demand while regulation steers their reserves toward many of the same instruments.
Payments, debt management and monetary policy increasingly intersect.
Stablecoins Could Become Part of America’s Debt Architecture
Stablecoins have mostly been discussed as payment instruments.
Their major uses include crypto settlement, cross-border transfers, access to dollars, remittances and, increasingly, commercial payments.
The GENIUS Act adds a balance-sheet dimension to that story.
Every additional dollar of regulated stablecoin issuance must be matched by an eligible reserve asset. When that reserve asset is a Treasury bill, adoption of digital payments also creates demand for government debt.
At sufficient scale, that changes how stablecoins should be understood.
They become both payment liabilities and distribution mechanisms for sovereign collateral.
Bessent’s comments suggest Treasury is already thinking about the market in those terms. His 2025 Treasury Market Conference remarks explicitly connected stablecoin growth with demand for Treasury bills and said structural changes in investor demand could influence issuance decisions across maturities.[4]
That is a meaningful shift in the policy discussion.
Stablecoin debates have generally focused on consumer protection, bank competition, illicit finance, payment efficiency and the international role of the dollar. Treasury financing now belongs in that conversation as well.
The question increasingly extends beyond whether stablecoins can compete with deposits, cards or conventional payment networks.
Digital dollars may eventually influence how the federal government finances itself.
The Policy Risk Is Turning Stablecoins Into Captive Buyers
There is an appealing side to this structure.
Private stablecoins can distribute dollar-denominated payment instruments globally without requiring the Federal Reserve to run a universal retail central-bank digital currency. Multiple issuers can compete on technology, settlement, distribution, compliance and user experience. Public blockchains and other open networks can provide interoperable infrastructure without forcing every retail transaction onto a single government-operated payments platform.
From a market-structure standpoint, competition can preserve flexibility that centralized systems often struggle to provide.
Stablecoins may therefore offer a path toward broader digital-dollar adoption while maintaining greater institutional separation between the state, the central bank and the retail payments layer.
The fiscal connection creates a different set of incentives.
Once stablecoin issuers become significant buyers of Treasury securities, policymakers may begin to evaluate stablecoin rules partly through the lens of federal financing.
Reserve requirements introduced as prudential safeguards could gradually acquire a second attraction: their ability to channel private money into government debt.
There is an important difference between issuers holding Treasury bills because the securities are liquid, safe and economically appropriate reserve assets, and a regulatory framework designed primarily to turn private digital money into a captive source of sovereign funding.
U.S. policy has not crossed that line.
The incentive is still worth identifying early.
Reserve regulation should focus primarily on redemption, liquidity and financial stability. Where several sound reserve arrangements are possible, policy should leave room for competition. The government’s own financing needs should remain a secondary consequence rather than the organizing principle of stablecoin regulation.
Otherwise, private digital dollars could gradually acquire a quasi-fiscal role.
That would weaken one of their main structural advantages over a retail CBDC: the ability to develop digital money through competing private institutions rather than through a single centralized balance sheet and payment system.
The Treasury Twist Is Really a Story About Two Curves
The August buyback decision should be viewed with restraint.
Treasury has not introduced yield curve control. It has expanded an existing liquidity-support program focused on long-dated off-the-run securities. The amounts remain limited, long-term auctions continue and the government has announced no explicit yield objective.[1][2][3]
A broader change is nevertheless taking shape around the Treasury curve.
At the long end, debt managers are becoming more active in supporting liquidity in older securities.
At the short end, stablecoin legislation is creating a regulated group of private issuers whose business models require substantial holdings of cash-like reserve assets, including Treasury securities with very short remaining maturities.[11]
The empirical evidence suggests those issuers are already large enough to affect bill yields.[7]
Treasury itself has acknowledged that continued stablecoin growth could change structural demand for bills and, over time, influence the relative attractiveness of issuance across maturities.[4]
None of that demonstrates coordination between stablecoin policy and the August buybacks.
It doesn’t have to.
Financial systems often converge through incentives rather than through explicit policy design.
If stablecoins grow into a trillion-dollar market, the architecture of private digital payments will determine where a substantial pool of safe-asset demand is directed. Treasury will inevitably take that demand into account when deciding how to finance federal borrowing. The larger the reserve pool becomes, the more relevant it will be to relative pricing across Treasury maturities.
At the same time, a Treasury willing to use buybacks more actively at the long end introduces another factor into the supply-and-demand balance for duration.
For now, those forces remain institutionally separate.
Economically, the separation is becoming less complete.
Stablecoins began as instruments for moving dollars through crypto markets. They are increasingly becoming payment infrastructure. Under the emerging U.S. regulatory regime, they are also becoming a potentially significant source of demand for sovereign debt.
That evolution brings both advantages and risks.
Competitive digital dollars can expand the global market for U.S. assets without requiring a centralized retail CBDC. They can broaden access to the dollar and support new payment networks. At the same time, they can increase the financial system’s dependence on short-term sovereign collateral, affect bank funding, alter monetary transmission and give policymakers new reasons to shape private money around public financing needs.
The larger significance of the Treasury Twist is therefore bigger than the $4 billion headline.
Two systems that were once analyzed largely on their own are beginning to overlap.
The structure of U.S. public debt increasingly matters for stablecoins.
The structure of stablecoins may increasingly matter for U.S. public debt.