Stablecoins Explained: Can You Really Earn Interest on Digital Dollars?

Updated 24 October 2026

Quick answer: A stablecoin is a digital token designed to stay worth exactly one unit of a currency, usually one US dollar, and backed by reserves of cash and short-term government debt. Stablecoins are worth more than $300 billion in total, and the two largest, Tether's USDT and Circle's USDC, account for about four-fifths of that. Can you earn interest on them? Not from the issuer: under the US GENIUS Act, whose final rules were published in October 2026 and take effect in January 2027, issuers may not pay interest simply for holding their tokens. But exchanges and apps can still offer "rewards", such as the roughly 3.5% Coinbase has paid on USDC balances, and decentralised finance platforms offer higher, riskier yields. For most savers, an insured savings account paying around 4% is safer and often pays more; stablecoins are best used for what they do well: moving dollars quickly and cheaply around the world.

Of all the things built on blockchains since Bitcoin appeared in 2009, stablecoins are the ones people actually use day to day. Traders use them to move money between crypto exchanges. Businesses use them to pay suppliers abroad in minutes instead of days. Families in Argentina, Nigeria, Turkey and Lebanon use them to hold dollars when their own currency is losing value. Payment companies from PayPal to Visa have built them into their services.

And because the reserves behind stablecoins earn interest, a natural question follows: why shouldn't the people holding them share in it? That question has become one of the fiercest fights in financial regulation. This guide explains what stablecoins are, how they keep their value, who earns the interest, what the new rules say, the real risks, and whether they belong anywhere in your own finances.

What a Stablecoin Is

A stablecoin is a token on a blockchain, a shared digital ledger, that is designed to keep a stable value relative to something else, almost always a national currency. Most track the US dollar. A few track the euro, gold or other assets.

Unlike Bitcoin, whose price is set entirely by what buyers will pay, a well-run stablecoin is meant to be boring: one token should always be worth one dollar. That stability is what makes it useful. You can send it to anyone with a digital wallet, anywhere in the world, at any time of day, usually for a fee of a few cents and with settlement in seconds or minutes.

How Stablecoins Keep Their Value

There are three main designs, and the differences matter a great deal for safety.

Fiat-backed stablecoins

The largest stablecoins, including USDT and USDC, are backed by reserves of real-world assets: cash in banks, US Treasury bills and similar short-term government debt. When you buy a token from the issuer, you hand over a dollar and the issuer adds a dollar to its reserves. When you redeem, it gives the dollar back and destroys the token. Arbitrage keeps the market price close to $1: if the token trades at 99 cents, traders buy it cheaply and redeem it for a full dollar.

Crypto-backed stablecoins

Some stablecoins, such as DAI and its successor USDS, are backed by other cryptocurrencies held in software contracts. Because those assets are volatile, the system holds more collateral than the value of the tokens issued, often 150% or more, and sells collateral automatically if prices fall.

Algorithmic stablecoins

These tried to hold their value with software rules alone, minting and burning tokens to balance supply and demand, with little or no real backing. The best known, TerraUSD, collapsed in May 2022, wiping out about $40 billion across TerraUSD and its sister token Luna. The design has been largely discredited, and US law now effectively excludes it from the regulated market.

A fully reserved stablecoin is a claim on dollars held by its issuer. The reserves, mostly short-term US government debt, earn interest; under US law from January 2027, issuers cannot pass that interest to holders, although exchanges may still offer their own rewards.

How Big the Market Has Become

Total stablecoin supply passed $300 billion in 2026, according to data from DefiLlama, peaking at around $320 billion in the spring before easing slightly as the wider crypto market weakened. The market is highly concentrated:

Tether (USDT), issued by a company based in El Salvador, is the largest, with a market value of about $183 billion in August 2026. It dominates trading on offshore exchanges and everyday use in emerging markets.
USD Coin (USDC), issued by the US company Circle, was worth about $72 billion. It is more widely used by regulated US and European firms.
Together, the two account for roughly 83% of all stablecoins. The rest are spread among dozens of smaller tokens, including ones issued by PayPal, crypto exchanges and decentralised protocols.

Stablecoin issuers have become significant buyers of US government debt in their own right. Their reserves, largely Treasury bills, are bigger than the Treasury holdings of many countries.

What Stablecoins Are Actually Used For

Crypto trading: most trading of Bitcoin and other tokens is priced against stablecoins rather than dollars, because they move between exchanges instantly.
Cross-border payments: sending money abroad through banks can take days and cost several percent in fees. Stablecoin transfers settle in minutes for cents, though converting back into local currency at the other end still costs something.
Dollar savings in weak-currency countries: where inflation is high or access to dollars is restricted, stablecoins let people hold dollars on a phone without a US bank account.
Business treasury and payments: some companies now settle invoices and pay contractors in stablecoins, and payment networks are building them into their systems.
Decentralised finance: stablecoins are the main currency for lending, borrowing and trading on blockchain-based platforms.

Who Earns the Interest?

Here is the heart of the matter. When you hold a fully backed stablecoin, the issuer is holding roughly a dollar of reserves on your behalf, mostly in Treasury bills that pay around 4% a year in 2026. The token itself pays you nothing. The issuer keeps the interest.

That has made stablecoin issuance one of the most profitable businesses in finance. Tether has reported billions of dollars of annual profit, earned largely from interest on its reserves, with a small staff. For holders, it means a stablecoin is, in effect, an interest-free loan to the issuer. In a world of near-zero interest rates nobody minded much. With Treasury bills paying 4%, the question of who gets the interest has become a fight worth billions.

What the New US Rules Say

The GENIUS Act, signed into US law in July 2025, created the first federal framework for dollar stablecoins. Its main requirements:

Full backing: every token must be backed one-for-one by cash, short-term Treasuries and similar high-quality assets.
Licensing: issuers must be approved and supervised, by federal banking regulators for the largest or by states for smaller issuers.
Transparency: issuers must publish the make-up of their reserves every month.
Redemption: holders must be able to redeem tokens for dollars.
No interest from issuers: issuers may not pay interest or yield to holders simply for holding the token.

Regulators missed the law's July 2026 deadline for detailed rules, but the Office of the Comptroller of the Currency published final rules in October 2026, taking effect on 18 January 2027. They confirm the ban on issuers paying interest, but stop short of banning exchanges and other companies from offering their own rewards, which will instead be reviewed case by case to stop issuers disguising interest as something else.

Banks lobbied hard for a wider ban. More than 40 banking associations, led by the American Bankers Association, argued that interest-paying stablecoins would pull deposits out of banks and reduce lending. Crypto companies argued that rewards are no different from cash-back offers on credit cards. A separate bill on crypto market structure, the CLARITY Act, which could address the question, has stalled in the Senate.

How People Earn Yield on Stablecoins Today

Exchange and app rewards

Some exchanges pay "rewards" to customers who keep stablecoins in their accounts. Coinbase, which shares the interest income from USDC reserves with Circle, has paid around 3.5% a year on USDC balances. These rewards are a marketing cost funded partly by reserve income. They are not guaranteed, can be cut at any time, and depend on the platform staying solvent.

Lending on crypto platforms

Decentralised lending protocols such as Aave let you lend stablecoins to borrowers, who post crypto as collateral. Rates move with demand and can range from a couple of percent to well into double digits in busy markets. The risks include software bugs, hacks, collateral crashes and platforms freezing withdrawals.

"Yield-bearing" stablecoins

A newer category of tokens passes some reserve income or trading income to holders directly, usually by being structured as a fund or security rather than a payment stablecoin, or by being offered only outside the United States. Some hold tokenised Treasury bill funds, such as BlackRock's BUIDL fund; others earn income from crypto trading strategies, which carry much more risk. Yield-bearing stablecoins drove more than half of net stablecoin supply growth in early 2026, according to industry estimates.

The lesson of 2022

Before trusting any platform with your money, remember the crypto lenders that promised high, steady yields on stablecoins in 2021 and 2022. Celsius paid customers up to 18% and froze withdrawals in June 2022; it, Voyager and BlockFi all went bankrupt, and FTX collapsed in November 2022. Customers waited years to recover part of their money. Anchor, the platform that paid nearly 20% on TerraUSD, disappeared with the token. High yields on dollars always come from somewhere, and when the source is not obvious, it is usually risk.

The Real Risks

Losing the peg. In March 2023, Circle disclosed that about $3.3 billion of USDC's reserves were held at Silicon Valley Bank, which had just failed. USDC fell to about 87 cents over a weekend and recovered only when US regulators guaranteed the bank's deposits. TerraUSD, with no real reserves, never recovered.
No deposit insurance. Stablecoins are not bank deposits. If an issuer, exchange or wallet provider fails, there is no FDIC, FSCS or DICGC to make you whole. The GENIUS Act gives holders priority in an issuer's bankruptcy, but that is not the same as a government guarantee.
Issuer and reserve risk. You depend on the issuer actually holding what it says. Tether, in particular, has a long history of questions about its reserves and paid a settlement to US regulators in 2021 over earlier claims. It now publishes regular attestations, but has not sought authorisation under the EU's MiCA rules and has been removed from European exchanges for retail users.
Platform risk. Most people hold stablecoins on exchanges. If the exchange fails or freezes withdrawals, the stability of the token does not help you.
Losing access. If you hold stablecoins in your own wallet and lose the recovery phrase, nobody can restore them. Mistyped addresses and scams cannot be reversed.
Freezing. Issuers of fiat-backed stablecoins can and do freeze tokens linked to crime or sanctions. That is a feature for law enforcement but means your tokens are not beyond anyone's control.

Stablecoin rewards or a savings account?

Compare what dollars earn as a stablecoin reward with an insured savings account, and test what a temporary loss of the $1 peg would cost.

Amount in US dollars

Stablecoin reward rate offered (%)

Insured savings rate available (%)

Fall in price to test if the peg breaks (%)

Stablecoin reward per year—

Savings interest per year—

Difference per year—

Loss if you had to sell during that fall—

—

USDC fell to about $0.87, a 13% drop, for a weekend in March 2023 before recovering; TerraUSD fell to almost nothing in 2022 and never recovered. Stablecoins are not covered by deposit insurance. Rewards are set by the platform and can change at any time.

Stablecoins Around the World

United States: the GENIUS Act framework takes full effect in January 2027. Licensed issuers, monthly reserve reports and a ban on issuer interest will apply.
European Union: the Markets in Crypto-Assets regulation, MiCA, is fully in force. Stablecoins must be authorised; issuers of euro and dollar tokens must hold reserves largely in EU banks. USDC is compliant; USDT has been delisted for retail users across the bloc.
United Kingdom: the government and the Financial Conduct Authority are building a regime for stablecoins used in payments; until it is complete, stablecoin products for consumers remain lightly regulated.
Asia: Hong Kong and Singapore have introduced licensing regimes for stablecoin issuers, and Japan allows licensed banks and trust companies to issue them.
India: stablecoins are not legal tender and fall under India's general crypto rules, including a 30% tax on gains and a 1% deduction at source on transfers. The Reserve Bank of India has repeatedly warned about risks to monetary control and is developing its own digital rupee instead.
Emerging markets: in countries such as Argentina, Nigeria and Turkey, stablecoins are widely used as a way to hold dollars, sometimes in tension with capital controls.

Stablecoins and Central Bank Digital Currencies

Stablecoins are often confused with central bank digital currencies, or CBDCs, but they are different things. A stablecoin is issued by a private company and backed by reserves it holds. A CBDC is digital money issued directly by a central bank, a liability of the state itself, like banknotes in electronic form.

China's digital yuan and India's digital rupee are the largest CBDC experiments. The European Central Bank is preparing a digital euro. The United States has gone the other way: the current administration has opposed a US CBDC and backed regulated private stablecoins instead. Which model wins out globally will shape how digital money works for decades.

Should You Use Stablecoins?

That depends on what you want them for.

For sending money abroad: they can be cheaper and faster than banks or money transfer services, especially for countries with expensive remittance corridors, provided both ends can convert to and from local currency easily.
For holding dollars in a weak-currency country: they offer access to dollars that may otherwise be hard to get. Prefer well-established, regulated tokens and reputable platforms, and keep only what you need.
For trading crypto: they are the practical currency of the crypto market.
For earning interest on savings: in most rich countries, an insured savings account, money market fund or Treasury bill pays a similar or higher rate with far less risk. Our guide to Where to Keep Your Cash When Rates Rise: Savings Accounts, T-Bills and Money Market Funds compares those options.

If you do hold stablecoins, a few precautions go a long way: stick to the largest, most transparent tokens; check how a platform pays any reward and whether it holds customer assets separately; never hold more than you could afford to have frozen for months; and treat promises of high, steady yields with deep suspicion.

How to Buy and Hold Stablecoins Safely

Use a regulated platform. Buy through an exchange or payment app licensed in your country, such as a registered crypto exchange or a mainstream payment service that supports stablecoins. Check the regulator's register rather than relying on the app's own claims.
Choose a transparent token. Prefer stablecoins that publish monthly reserve reports from a recognised accounting firm and that are authorised in major jurisdictions. Avoid little-known tokens offering unusually high rewards.
Understand where your tokens are held. On an exchange, you own a claim on the exchange, not the tokens themselves. In your own wallet, you control them, but you are responsible for keeping the recovery phrase safe, written down offline and never shared.
Check the network before sending. The same stablecoin exists on several blockchains. Sending USDC on one network to an address that only accepts another can mean losing it.
Send a small test first. Before moving a large amount, send a few dollars and confirm they arrive. Blockchain transfers cannot be reversed.
Keep records for tax. In many countries, converting stablecoins into other crypto, or using them to buy things, can count as a taxable disposal. Keep a record of every transaction.

Frequently Asked Questions

Are stablecoins safe?

Safer than most cryptocurrencies, but not as safe as a bank deposit. Well-backed stablecoins such as USDC have held close to $1 almost all the time, but they are not covered by deposit insurance, and even USDC briefly fell to 87 cents in 2023. Algorithmic stablecoins such as TerraUSD have failed completely.

Can you earn interest on stablecoins?

Not from the issuer under US rules from January 2027, which ban issuers from paying interest for simply holding a token. Exchanges and apps may still pay rewards, such as about 3.5% on USDC at Coinbase, and crypto lending platforms offer variable yields with much higher risk.

What is the difference between USDT and USDC?

Both are dollar stablecoins backed mainly by cash and Treasury bills. USDT, issued by Tether, is larger and dominates offshore trading and emerging markets. USDC, issued by the US company Circle, publishes more detailed reserve reports and is authorised under EU rules; USDT is not.

Can a stablecoin lose its value?

Yes. A stablecoin can fall below $1 if investors doubt its reserves, as USDC did briefly in March 2023, or collapse entirely if it has no real backing, as TerraUSD did in 2022. Regulation and transparent reserves reduce, but do not remove, that risk.

Are stablecoins legal in India?

Holding and trading them is not banned, but they are not legal tender and are treated as virtual digital assets: gains are taxed at 30% and transfers carry a 1% tax deduction at source. The Reserve Bank of India has warned about their risks.

Why would a stablecoin pay less than a savings account?

Because the issuer keeps the interest on the reserves to run its business and make a profit, and any reward you receive is paid by an exchange or app out of its own share. An insured savings account or a money market fund passes most of the interest directly to you.

Is a stablecoin the same as a digital dollar from the government?

No. A stablecoin is issued by a private company. A central bank digital currency is issued by the central bank itself. The United States has no CBDC; several other countries, including China and India, are testing their own.

Final Thoughts

Stablecoins have quietly become the most successful product of the crypto industry: digital dollars that move anywhere in seconds, used by traders, businesses and families around the world, and now regulated in the United States and Europe. They are not the get-rich-quick part of crypto; they are the plumbing.

The fight over who earns the interest on their reserves will go on, between banks, crypto firms and regulators. For individual savers, the sensible conclusion is simpler. Use stablecoins for what they do well, moving and holding dollars where banks are slow or unavailable, and keep your savings where they are insured and pay you directly. A digital dollar is only as good as the company and the reserves behind it.

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Market figures are from DefiLlama, CoinGecko and company disclosures as reported in mid-2026; regulatory details are as published in October 2026. This article is for education and isn't investment advice.