What Is a USDT to USDC Swap?
A USDT to USDC swap exchanges one dollar stablecoin for another: USDT is issued by Tether, USDC is issued by Circle, and both target a value of $1. Where both tokens live on the same network - Ethereum, Solana or BNB Chain - the swap is a single transaction through a DEX stablecoin pool. Where they do not, the swap is cross-chain: TRON has USDT but no USDC, since Circle stopped minting USDC on TRON in February 2024, so USDT on TRON swaps to USDC delivered on another network. The differences between the two stablecoins themselves - reserves, issuers, adoption - are covered in USDT vs USDC.
How Gem Wallet Finds the Best Rate
Most USDT to USDC swaps never leave the network: Gem Wallet checks the stablecoin pools of Uniswap on Ethereum, Jupiter on Solana and PancakeSwap on BNB Chain and routes your USDT through the pool that returns the most USDC for your amount. When the USDT sits on TRON or TON, where no USDC route exists on the same network, Gem Wallet compares cross-chain protocols such as Relay, Mayan and THORChain instead. Out of 20+ swap providers, the quote shows the winner with the exchange rate, the network fees and the provider fee before you confirm.
USDT to USDC Networks & Fees
The route of a USDT to USDC swap depends on two networks: the one your USDT is sent from and the one where you receive USDC.
| Sending network | Transfer fee | USDC on the same network | Route |
|---|---|---|---|
| Ethereum (ERC20) | Low | Yes | One transaction, deepest stablecoin liquidity |
| Solana (SPL) | Very low | Yes | One transaction, settles in seconds |
| BNB Chain (BEP20) | Low | Yes | One transaction, settles in seconds |
| TRON (TRC20) | Moderate | No | Cross-chain - USDC arrives on another network |
| TON | Very low | No | Cross-chain - USDC arrives on another network |
For the current cost of a transfer on every network, see the live USDT transfer fees.
On the same network you pay one network fee plus the pool fee of the DEX. Stablecoin pools carry some of the lowest fees in DeFi because the two tokens trade so close to each other, which is why the rate stays near 1:1. A cross-chain swap adds a second network fee and the fee of the cross-chain provider, and it is the only option for TRC20 USDT.
Whichever network your USDT sits on, you can swap it directly - there is no need to move USDT to another network first, since that adds its own fee and an extra step. Before the swap you pick the network where USDC should arrive, including Ethereum, Solana, BNB Chain or Base, and the quote already includes the delivery to it. Pick the network you will use the USDC on: the app or person you pay decides where USDC is useful to you.
