The U.S. dollar was global long before stablecoins.
Companies use it for trade. Banks use it for international funding. Governments hold it as a reserve currency.1
Stablecoins do not create this power from nothing.
They give the dollar a new digital rail.
A dollar stablecoin can move between wallets at any hour. It can cross borders. It can also connect with software-based financial services.
Stablecoins may not replace the dollar.
They may make the dollar easier to hold and move.
This is the main idea of Part 6.
The dollar is becoming more than a currency. It is also becoming digital infrastructure.
Why Stablecoins Start With an Advantage
A new currency must first earn trust.
A dollar stablecoin starts with a unit people already know. One token aims to equal one U.S. dollar.
This matters because the dollar already has a large global network. Businesses price goods in dollars. Banks settle debts in dollars. Investors hold large markets of dollar assets.
The Federal Reserve says the dollar’s international use remains much larger than the U.S. share of world output and trade.1
Stablecoins build on that network.
They do not ask users to learn a new unit. They change how the unit moves.
Stablecoins Put Dollars on 24/7 Digital Rails
A bank deposit is already digital. But it normally moves through banks, card networks, and national payment systems.
A stablecoin is different.
It turns a dollar claim into a token. The token can move between compatible software addresses.
This creates three possible benefits:
- Easier access to dollars
- Shorter cross-border payment routes
- New demand for dollar reserve assets
The Federal Reserve reported in July 2026 that stablecoins were becoming part of international financial infrastructure. Conference participants also expected major dollar stablecoins to support wider dollar use.2
1. Easier Access to Dollars
A dollar bank account can be hard to open outside the United States.
A stablecoin wallet may be easier to access. A user still needs a service that converts local money into the token. But the user may not need a conventional U.S. bank account.
This can help people who face:
- high inflation
- a weak local currency
- limited banking services
- costly international transfers
- restrictions on foreign-currency accounts
The BIS reported that more than 99% of stablecoins were linked to the U.S. dollar in its 2025 analysis.3
For users, this can provide a simple way to hold dollar value.
For local economies, it can create a different problem.
People may save, trade, and price goods in digital dollars instead of local money. This process is often called digital dollarization.
It can give households more choice. It can also weaken the local currency.
2. Shorter Cross-Border Payment Routes
International payments often pass through several banks.
Each bank checks the payment, manages liquidity, converts data, and may charge a fee. The process can be slow and expensive.
The Federal Reserve says more than half of international payments use the dollar. It also notes that more than 60% of wholesale payments pass through at least one intermediary.4
Stablecoins can shorten part of this chain.
A sender can buy a dollar token and transfer it to another wallet. The receiver can then keep the token or convert it into local money.
This can support:
- remittances
- supplier payments
- company treasury transfers
- trade settlement
Still, the blockchain fee is not the full cost.
Users may also pay for currency conversion, compliance checks, local liquidity, and withdrawal into bank money or cash.
Stablecoins improve the transport layer. They do not remove every middleman.
3. Stablecoins Can Create Treasury Demand
A reserve-backed stablecoin needs safe assets behind it.
U.S. rules allow reserves such as cash, deposits, repurchase agreements, and short-term Treasury securities. The Treasury Borrowing Advisory Committee described a one-to-one reserve model using eligible liquid assets.5
This creates a direct link between stablecoins and U.S. government debt.
When stablecoin supply grows, issuers may buy more Treasury bills. The bills help support redemption.
The IMF estimated in May 2026 that stablecoins held about 2% of outstanding U.S. Treasury bills.6
The basic cycle is simple:
- Users buy dollar stablecoins.
- Issuers receive dollars.
- Issuers buy liquid reserve assets.
- The reserves support the token’s one-dollar value.
This can increase demand for short-term U.S. debt.
But the effect is not automatic.
A buyer may move money out of a bank deposit, money-market fund, or Treasury fund. In that case, demand may only move from one holder to another.
The key question is where the money came from.
Stablecoins Create a New Dollar Business
Many stablecoin issuers earn interest on their reserves.
The token holder may receive no interest. The issuer keeps much of the income after costs.
This model can become very profitable when supply grows.
A stablecoin is still not the same as a bank deposit.
A bank uses deposits to support lending and other services. A stablecoin issuer mainly holds liquid assets for redemption.
The Federal Reserve notes that U.S. payment stablecoins must use relatively safe reserves. Issuers also cannot directly pay interest under the current framework.4
Users therefore receive a digital payment token, not a normal insured bank account.
What Could Go Wrong?
Stablecoins can expand dollar use. They can also create new risks.
Local currencies may lose ground
The IMF warns that stablecoins may speed up currency substitution.7
People may move savings into dollar tokens when they do not trust local money. Businesses may also begin using stablecoins for prices and contracts.
This can reduce the local central bank’s influence over the economy.
Banks may lose deposits
Households and companies may move money from bank accounts into stablecoins.
Banks could lose a cheap source of funding. However, they may gain new roles as reserve custodians, issuers, wallet providers, or settlement partners.
Stablecoins may not remove banks. They may change what banks do.
Redemption pressure can spread stress
A stablecoin is stable only if users can redeem it for one dollar.
Federal Reserve Governor Michael Barr said in March 2026 that prompt redemption at par is essential, especially during stress.8
If confidence falls, many users may redeem at once. The issuer may need to sell Treasury bills quickly.
The IMF warns that large redemptions could cause fire sales in Treasury or repo markets.6
This creates a two-way link:
- Treasury assets help stabilize stablecoins.
- Stablecoin runs can put pressure on Treasury markets.
A Stablecoin Is Not a Federal Reserve Digital Dollar
The phrase digital dollar can mean different things.
| Form | Issuer | What the user holds | Main support | Main risk |
|---|---|---|---|---|
| Cash | Federal Reserve system | Physical central-bank money | Public monetary framework | Loss and theft |
| Bank deposit | Commercial bank | Claim on a bank | Bank assets and regulation | Bank failure and access limits |
| Dollar stablecoin | Private issuer | Token and redemption claim | Reserves and issuer governance | Reserve, redemption, and custody risk |
| U.S. CBDC | Not currently issued | Would be central-bank digital money | Public monetary and legal framework | Depends on future design |
A private stablecoin can extend dollar use.
It does not become Federal Reserve money just because it tracks one dollar.
This difference matters during failure, legal disputes, and market stress.
The Dollar Is Becoming a Platform
Stablecoins add a new role to the dollar.
The dollar can now act as a software building block for:
- global wallets
- automated payments
- tokenized securities
- trade settlement
- digital marketplaces
- company treasury systems
This can strengthen the dollar’s network effect.
More users attract more wallets. More wallets attract more services. More services make the token more useful.
But scale can also create concentration.
A small number of issuers may control reserves, redemptions, supported networks, and address-freezing tools.
The rail can be open while the token remains controlled by a private company.
What to Watch Next
1. Stablecoin supply by currency
Does the market remain dominated by the U.S. dollar?
2. Real payment use
How much activity comes from trade and remittances rather than crypto trading?
3. Reserve composition
Do issuers hold cash, deposits, Treasury bills, or other assets?
4. Bank deposit movement
Are households and companies moving large balances out of banks?
5. Total cross-border cost
Are payments still cheaper after conversion, compliance, and withdrawal fees?
6. Redemption performance
Can issuers meet large redemption requests during stress?
7. Digital dollarization
Are stablecoins replacing local currencies in savings, prices, and contracts?
Conclusion
Stablecoins could expand the dollar without creating a new sovereign currency.
They make dollar value easier to hold, move, and connect with software. They can also support demand for liquid U.S. assets.
But the benefits come with risks.
Stablecoins may weaken local currencies, move bank deposits, concentrate private power, and connect token runs with Treasury markets.
The dollar is not only becoming digital.
It is becoming programmable infrastructure.
Part 7 will ask the next question: Can a stablecoin survive a run?
Key Vocabulary & Phrases
Currency substitution (noun phrase)
The use of a foreign currency instead of the local currency.
Example: Dollar stablecoins may increase currency substitution.
Correspondent bank (noun phrase)
A bank that processes payments for another bank.
Example: Stablecoins may shorten payment chains that use correspondent banks.
Treasury bill (noun)
Short-term debt issued by the U.S. government.
Example: Stablecoin issuers often hold Treasury bills as reserves.
Reserve composition (noun phrase)
The mix of assets held to support a financial promise.
Example: Reserve composition affects redemption safety.
Digital dollarization (noun)
The spread of dollar use through digital tokens and wallets.
Example: Digital dollarization can weaken local currencies.
Fire sale (noun phrase)
A fast sale of assets at low prices during stress.
Example: Large redemptions may force a fire sale.
Next in This Series
Part 7 — Can a Stablecoin Survive a Run?
The final article will explain reserves, redemptions, depegging, liquidity, and fire-sale risk.
References
This article explains monetary infrastructure and market structure. It does not provide investment advice or support a political party, candidate, or government.
The International Role of the U.S. Dollar — 2025 Edition — Board of Governors of the Federal Reserve System.↩
Fifth Conference on the International Roles of the U.S. Dollar — Board of Governors of the Federal Reserve System.↩
The Next-Generation Monetary and Financial System — Bank for International Settlements.↩
Payment Stablecoins and Cross-Border Payments — Board of Governors of the Federal Reserve System.↩
Report to the Secretary of the Treasury from the Treasury Borrowing Advisory Committee — U.S. Department of the Treasury.↩
Tokenized Finance and Money — International Monetary Fund.↩
Understanding Stablecoins — International Monetary Fund.↩
Brief Remarks on Stablecoins — Board of Governors of the Federal Reserve System.↩