The two biggest stablecoins are no longer direct competitors. They’re becoming completely different products for completely different jobs.
Dune’s latest data tells the story clearly. Tether’s USDT is the king of payments — it handled about $95 billion in identified commerce payments in the first half of 2026. USDC managed $14 billion. For business-to-business payments, USDT accounted for 92% of the $48 billion total. On Tron, where most USDT lives, roughly 93% of the token’s supply sits in regular wallets, not on exchanges. It’s a payment and remittance tool, plain and simple.
USDC tells a different story. On Base, Circle’s stablecoin processed around $2.6 trillion in transfer volume in June alone — the highest of any token on any chain. Ethereum added another $1.6 trillion. USDC on Base turned its circulating supply over roughly 20 times in June. That’s not people sending money to friends. That’s trading and DeFi.
Together, USDT and USDC make up about 83% of the $315 billion stablecoin market across more than 200 tokens. But the old USDT-versus-USDC framing doesn’t capture what’s happening anymore. Each one is carving out its own territory.
Regulation is catching up. The GENIUS Act, signed into law in 2025, created the first federal framework for payment stablecoins. Now lawmakers are debating the CLARITY Act, which would define whether crypto assets fall under SEC or CFTC jurisdiction. It cleared the Senate Banking Committee in May. Galaxy recently put the odds of passage before the August recess at 50%.
