Who Buys the T-Bill Behind Your $1 Stablecoin

Behind every $1 coin sits a $1 asset

The $1 stablecoin sitting in a phone wallet looks like digital cash. On the issuer's balance sheet, it's a liability. When a user deposits $1, the issuer hands over a $1 coin and holds the incoming cash in cash-equivalents or short-term Treasury bills.

The GENIUS Act requires licensed payment-stablecoin issuers to hold at least a 1:1 reserve, and it limits eligible reserve assets to cash, demand deposits, Treasury bills with 93 days or less remaining to maturity, and short-term repo backed by those bills. Issuers must disclose reserve composition every month, and the law bars them from paying interest or yield directly to coin holders just for holding the token.

One distinction matters here. If an already-issued $1 coin changes hands 100 times in a day, reserves don't grow. What actually drives new Treasury demand isn't transaction volume, it's net new issuance of stablecoins.

What the US gets is bigger than just T-bill demand

Short-term Treasury demand. As newly deposited dollars pile up as reserves, they create structural demand for T-bills and other short-dated collateral.

A dollar distribution network. Anyone with an internet wallet can hold and move dollar-denominated value without a US bank account.

Regulatory reach. Reserve, redemption, anti-money-laundering and sanctions-compliance rules become the operating standard for on-chain dollars.

It's a stretch to call this classic monetary seigniorage, since the government isn't issuing the coins itself. But private issuers are creating near-zero-interest dollar liabilities and parking the reserves in Treasuries, which effectively lets the US extend the dollar's reach through a private network.

It doesn't solve America's debt problem

Stablecoin reserves cluster overwhelmingly in short-dated assets. Even the Treasuries the GENIUS Act permits are capped at 93 days or less to maturity. So even rapid stablecoin growth doesn't automatically fix the supply-demand picture for 10-year and 30-year bonds.

Research from the Bank for International Settlements confirms the split with data. Stablecoin inflows push down 3-month Treasury yields, but the pass-through to longer maturities is limited. The more striking finding runs the other way: when stablecoins see outflows, the resulting rise in yields is two to three times larger than the drop that inflows produce. Under normal conditions, issuers buy T-bills gradually. In a crisis, they have to sell fast to meet redemptions.

Tokenization isn't a lab experiment anymore

US equity markets shortened most securities settlement to T+1 back in May 2024. So pitching tokenization's value as "shrinking two days to a few seconds" is already behind the times. The bigger shift is wallet-based access, programmable collateral, and the possibility of settling an asset and its cash leg simultaneously.

In January 2026, the SEC laid out how rights can differ depending on whether a tokenized security is issuer-direct or built through a third-party structure. On September 17, it also approved a temporary "Innovation Exemption" letting certain on-chain venues trade tokenized NMS stocks under limited conditions. Tokenization is starting to move inside US securities market infrastructure rather than sitting as an unregulated shadow market.

The key question isn't whether trading runs 24 hours a day. It's whether the token actually represents one real share, how dividends and voting rights get passed through, and what claim investors have if the issuer goes bankrupt.

Where the money actually flows

Home currency → exchange or payment processor → dollar stablecoin → tokenized asset or settlement → issuer reserves → short-term US Treasuries

The number investors should watch in this chain isn't on-chain transaction volume. It's how much total stablecoin supply has grown, what reserve assets it's shifted into, and how much net redemption is happening.

Banks don't disappear, their role changes

If bank deposits migrate into stablecoins, banks could lose a cheap source of funding. But the Federal Reserve doesn't see this as a one-for-one effect, since issuers often park reserves back in bank deposits or Treasury purchases, and that money can recirculate through the financial system.

In the Fed's 2025 bank survey, a good number of large banks said they were exploring tokenized deposits, stablecoin-reserve custody and digital-asset wallet services as new business lines. Banks aren't so much being displaced by blockchain as shifting from the front end of payments toward the back-end infrastructure of custody, regulation and liquidity management.

Everything changes once AI starts spending money

The biggest long-run variable for stablecoins may not be crypto investors at all, it may be AI agents. In an economy where software automatically buys a single piece of data, one API call, or a few seconds of compute, a programmable wallet fits more naturally than a credit card.

Rules like "never spend more than $1 at a time," "$20 daily limit," "pay only approved vendors," or "send payment only after verifying output" can be written directly into code. In that world, a stablecoin balance stops being idle cash waiting for a trade and becomes working capital for a machine economy.

That said, AI doesn't necessarily have to run on coins. Corporate accounts and card APIs can be automated too. The outcome will likely turn on cost, speed, programmability, refund and dispute handling, and regulatory compliance, not ideology.

Insight Times Editorial Desk