Stablecoin transfers quadruple to $891B in Q3 2026 as seven of 10 largest US banks test settlement use cases

Stablecoins are doing what payments people said they would do: moving a lot of money, and not just inside crypto-native circles. A new Coinbase-commissioned report says quarterly adjusted transfer volume hit $891 billion in Q3 2026, while seven of the 10 largest US banks have already tested stablecoins or tokenized deposits for settlement.

1. According to The Block Research, stablecoins moved more than $400 million an hour in adjusted transfer volume during the third quarter of 2026. The quarterly total of $891 billion is more than four times the level seen in early 2023, which is the kind of number that gets bank treasury, settlement, and payments teams to stop treating stablecoins as a sideshow.
2. The timing data is the part that matters operationally: 73% of screened stablecoin transfer volume happened outside US banking hours, including nights, weekends, and holidays. For cross-border payments, that is the core pitch in one statistic — money moves when correspondent banking usually does not.
3. The report says 30% of mid-market companies conducting cross-border business are using or piloting stablecoins, up from 10% in 2024. Business-to-business payment volume also rose 36% year over year. In other words, this is no longer just a treasury experiment sitting in a slide deck.
4. The research also identified 293 million blockchain addresses holding stablecoins, more than the combined number of cards issued by American Express and Discover. The researchers were careful on the obvious point: addresses are not the same thing as individual users, so this is a scale indicator, not a clean user count.
5. On the macro side, the report estimated that shifting 80% of international transactions onto stablecoin networks could add $155 billion to global GDP annually and free up roughly $3 trillion in liquidity now held by banks to support cross-border payments. Those are hypothetical adoption scenarios, not realized gains, and the report also notes a trade-off: broader stablecoin use could reduce bank lending and offset some of the payment-efficiency upside.

Separate survey data from the National Cryptocurrency Association shows the distribution side of this story is also moving. It found that 42% of US adults, or about 112 million people, would be more likely to open an account with a bank offering crypto services or use that institution for more of their financial needs. Another 18% said they would like to buy or use stablecoins through their primary bank or financial institution, while 64% said their bank, credit union, or financial advisor had never raised the topic of cryptocurrency.

The market cap, meanwhile, is not racing the same way transaction volume is. DefiLlama put stablecoin market capitalization at $301.42 billion on Tuesday, down about 0.6% from $303.14 billion on Oct. 20, 2025. So the thing is: usage is accelerating faster than supply, which is exactly the sort of mismatch that tends to draw in banks, PSPs, and anyone else watching settlement economics.