What is the difference between USDT and USDC?

USDT (Tether) and USDC (USD Coin) are both USD-pegged stablecoins — designed to hold ~$1 — but they differ in who runs them, how they're backed, and how each is used.

Issuer & model

• USDT — issued by Tether, the oldest and largest stablecoin. It's the de facto liquidity pairing on most exchanges and is especially dominant on Tron and Ethereum. Larger market cap, huge trading volume.
• USDC — issued by Circle (with its technology originally from the CENTRE consortium). It's the stricter, more transparent/regulated of the two: audited reserves, MiCA-compliant in the EU, and "Made in USA" — heavily used in DeFi, payments, and institutional flows.

Market snapshot (live, per CoinGecko)

On-chain / security differences (GoPlus checklist)

• Both are not honeypots, 0% buy/sell tax, open source, and widely held.
• USDT's Ethereum contract: mintable (issuer can create more supply), blacklist-capable, transfer-pausable, and an owner can change balances — these are the classic "governance levers" Tether retains. That's by design for a fiat-backed stablecoin (it lets Tether freeze/block addresses for compliance), but it's a real difference versus a purely neutral token.
• USDC's Ethereum contract: proxy/upgradeable (Circle can upgrade the contract logic), also mintable via Circle. No blacklist/pause flags returned — though Circle does block addresses at the off-chain compliance level.

In practice: USDT = highest liquidity, the default trading pair everywhere, especially for moving funds across exchanges. USDC = more transparency/regulation, the default for DeFi yield and on-chain/institutional use. Both are ~$1; the real decision is usually about ecosystem fit and how much governance control you're comfortable with the issuer holding.

Both are listed across the major venues we track (Binance, OKX, Bybit, Bitget, MEXC, KuCoin). Not financial advice — just the trade-offs.

Tetherusdt#3 · USDCusdc#6

Want me to pull up a specific exchange's fees for either, or compare them on a particular chain?