Key takeaways

• Tether, the company behind the USDT stablecoin, made more than $10 billion of profit in 2025 by investing the dollars behind USDT in US Treasury bills and keeping the interest, which is more than Coinbase's entire 2025 revenue of $7.2 billion.

• USDT holds about 60% of all stablecoin supply, $183.4 billion against USDC's $75.1 billion in September 2026, because it is the default trading pair, the cheapest dollar to send on Tron and the savings dollar of emerging markets.

• Binance's attempt to build its own dollar ended with regulators halting BUSD, while Coinbase chose to take a cut of USDC instead, and both outcomes show that distribution amplifies product-market fit rather than replacing it.

Ask most people to name the biggest company in crypto and they'll say Binance or Coinbase, but by the numbers it's Tether, the company behind the USDT stablecoin. Tether made more than $10 billion in profit in 2025, which is more than Coinbase's entire 2025 revenue of $7.2 billion. Tether says USDT has more than 530 million users, well past Binance's 323 million, and it runs on a team of a few hundred people.

None of that came from a campaign. Tether has no ad budget anyone can point to and no listing push anyone can name. Both big exchanges wanted a piece of the business and both tried to build their own dollar, and what happened to them is the most useful part of this story. But first comes the obvious question of how a company selling a token worth exactly one dollar ended up on top.

Tether never bought its way in. It found a job people badly needed done, and the exchanges came to it, not the other way around.

How does Tether make money?

Tether makes money by investing the dollars it receives for USDT, mostly in short-term US Treasury bills and repurchase agreements, and keeping the interest while paying USDT holders nothing. With about $184 billion of USDT outstanding, that spread produced more than $10 billion of profit in 2025 and $1.5 billion in the second quarter of 2026.

The model fits in a sentence. A customer hands Tether a dollar and gets one USDT back, Tether puts that dollar into short-term US government debt and similar assets, and it keeps the interest while paying holders nothing. Direct minting and redemption are limited to verified customers with a $100,000 minimum, so almost everyone else gets USDT through an exchange or from another person.

At Tether's scale that spread becomes enormous. USDT in circulation passed $186 billion at the end of 2025, backed by up to $141 billion in Treasury exposure, which is how a company that charges its holders nothing earned more than $13 billion in 2024 and more than $10 billion in 2025. Tether's real product is the demand to hold the token, because every dollar parked in USDT, whether it's waiting for a trade, crossing a border or sitting as someone's savings, earns Tether interest.

Where does USDT's volume come from?

Engine one: the trading pair. USDT is the default unit of crypto trading, and in Q1 2026 it accounted for 68% of all crypto trading volume and 86% of all stablecoin trading volume. That position was set years ago, when exchanges couldn't get bank accounts. Its sister exchange Bitfinex was the first to accept USDT in 2015, and when China cut its banks off from crypto platforms in 2017, exchanges serving Chinese traders moved to USDT pairs because they had no other way to offer a dollar. Once the deepest order books were priced in USDT, traders came for the liquidity and the liquidity kept growing with the traders.

Engine two: cheap transfers. The second engine runs on Tron, a blockchain crypto marketing rarely talks about. Tron became the largest home for USDT in Q2 2026, with $87.9 billion against Ethereum's $78.7 billion, and it carries 52% of USDT transfers under $1,000 among the chains where USDT is issued natively. A gasless feature lets people send USDT without holding Tron's own token, and for someone sending $80 home or paying a supplier abroad, that matters far more than whose reserve report is more detailed.

Engine three: dollars for people who can't easily get them. Between June 2024 and June 2025, Chainalysis found that USDT routinely processed about $703 billion a month, peaking at $1.01 trillion in June 2025, with remittances and dollar access driving adoption across developing regions. For many of those users USDT is less a crypto asset than a savings account in a stronger currency.

Why does USDT dominate over USDC?

USDT dominates USDC because it got to the world's traders and emerging-market users first and became the default wherever they are. It holds about 60% of stablecoin supply to USDC's 25%. USDC moves more money on-chain because DeFi traders cycle it through positions, but USDT wins on balances, and balances are what earn an issuer its interest.

Supply figures are from Stablecoin Beat's tracker, transaction value from 2025 on-chain data, and results from Tether's Q2 attestation and Circle's Q2 report. Rivals with cleaner regulatory standing and bigger backers haven't changed the picture, and four reasons stand out.

Liquidity compounds. Deep order books mean tighter spreads, tighter spreads attract more traders, and more traders deepen the books. A competitor can copy the token in a weekend, but it can't copy years of liquidity.

It served the users others deprioritized. USDC was built around US compliance and US partners, while Tether built for offshore exchanges, Asian traders and emerging-market users, who turned out to be a huge share of the world's crypto activity. When Binance and Coinbase dropped USDT for users in the European Economic Area in 2025 under MiCA, its share of global supply stayed around 60%.

It's already wherever the other person is. A dollar is only useful if the person on the other side accepts it, and USDT is on the exchanges, the peer-to-peer desks and the cheap chains, so choosing it is rarely a decision anyone makes.

Utility has outrun trust. In 2021 the CFTC fined Tether $41 million after finding its reserves were fully backed on only 27.6% of days in a 26-month sample from 2016 to 2018, and in November 2025 S&P Global cut USDT's stability rating to "weak", its lowest score. People kept using it anyway because it did a job they needed done, which is what real product-market fit looks like.

What happened when the exchanges tried to copy it

Binance had the biggest megaphone in crypto and tried to use it to make its own dollar. BUSD, issued by Paxos under the Binance brand, got zero-fee pairs, prime placement and, in September 2022, an auto-conversion of users' USDC, USDP and TUSD balances into BUSD. It reached about $16 billion before New York's financial regulator ordered Paxos to stop minting it in February 2023. The replacement, FDUSD, got the same push and in April 2025 fell as low as $0.87 on claims its issuer denied. Today Circle pays Binance $60.25 million upfront plus monthly fees to promote USDC, so the exchange that tried to be the product ended up paid to carry someone else's.

Coinbase never issued a dollar and negotiated a cut of USDC instead. Under its agreement with Circle, Coinbase keeps all of the reserve income on USDC held on its own platform and half of the income on USDC held everywhere else, a deal that paid it $910 million in 2024. In the second quarter of 2026, with spot volumes down more than 20% and Coinbase posting a $359 million net loss, its stablecoin revenue was still $292 million, down only $17 million from a year earlier. Coinbase sold its shelf to a product that already had fit, and Tether needed neither the shelf nor the push.

Is Tether's lead safe?

The lead is real but not guaranteed. Tether's income moves with interest rates, and in Q2 2026 it reported $1.5 billion in operating profit while its excess reserve buffer fell by about half, to $4.11 billion. Riskier assets such as bitcoin and gold make up a bigger slice of its reserves, with gold holdings passing 146 tons, which is what S&P flagged. And the US now has a stablecoin rulebook, which is why Tether launched USAT, a separate federally regulated stablecoin issued through Anchorage Digital, in January 2026. The broader crypto market structure bill is another matter, since the CLARITY Act failed in the Senate in September.

What we'd tell a founder about Tether's playbook

Find the job before the audience. USDT's first real users had a currency problem, not a crypto interest. Offshore traders and emerging-market savers looked like the unglamorous end of crypto and turned out to be the biggest end, while most web3 marketing talks to the same ten million people.

Test with the incentives switched off. Zero-fee pairs, points and auto-conversions all generate activity, and the honest test is what's still there when the promotion moves on. If your usage only lives where you pay for it, you have a campaign rather than a market, which crypto proved at the largest scale with play-to-earn.

Distribute on the rails your users already use. Tron wasn't the prestige chain, it was the cheap one where people sending small amounts already were. Good go-to-market shows up inside your users' existing habits instead of asking them to adopt yours.

Make trust part of the product from day one. USDT survived years of doubt because its utility was overwhelming, and almost no other product has that cushion. BUSD lost to a regulator and FDUSD slipped on a rumour, so publish your reserves, audits and limits before anyone asks, because the projects earning attention in 2026 are the ones comfortable being boring on purpose.

Distribution amplifies what's already there

The product that solved a real problem for people the industry wasn't marketing to became the biggest company in crypto, with a few hundred staff and no campaign anyone can name. The exchange that owned the customer got paid on someone else's product, even in a quarter it lost money, and the exchange with the loudest megaphone ended up renting it out. Distribution makes product-market fit louder and has never been a substitute for it. The strongest position in any market isn't being chosen, it's being assumed.

Frequently asked questions

Is Tether profitable?

Yes, and by reported profit it is the most profitable company in crypto. Tether reported more than $10 billion of profit for 2025 and more than $13 billion for 2024, then $1.5 billion of operating profit in Q2 2026. For comparison, Coinbase's entire 2025 revenue was $7.2 billion and Circle's Q2 2026 net income was $48 million.

What is the difference between USDT and USDC?

USDT and USDC are both dollar stablecoins, but USDT is issued by Tether and built for global traders, while USDC is issued by US-listed Circle around US compliance. In September 2026 USDT had $183.4 billion in supply against USDC's $75.1 billion, while USDC moved more value on-chain in 2025, $18.3 trillion to $13.3 trillion.

Is USDT safe to hold?

USDT has kept its dollar value through years of scrutiny, and its Q2 2026 attestation showed assets exceeding liabilities by $4.11 billion. The risks are real, though. The CFTC fined Tether $41 million in 2021 over past reserve claims, and S&P rated USDT's stability "weak" in November 2025, partly because of bitcoin and gold in its reserves.

What is USAT?

USAT is a separate dollar stablecoin that Tether launched in January 2026 for the US market, issued through Anchorage Digital under the federal stablecoin rules. It sits alongside USDT rather than replacing it, which lets Tether serve regulated US users while USDT continues to serve global trading and emerging markets.