Tether issues the same dollar-pegged token on many chains, and the differences between them are not cosmetic — they change what you pay, how fast you settle and what can go wrong. Picking the wrong network when withdrawing from an exchange is still one of the most common ways people lose USDT permanently.
The main networks, side by side
- ERC-20 (Ethereum) — the original USDT home. Contract
0xdAC17F958D2ee523a2206206994597C13D831ec7, 6 decimals. Highest security budget, highest fees: a simple transfer often costs $1–8 depending on gas. ~12 seconds per block, exchanges usually require 12 confirmations.
- TRC-20 (Tron) — contract
TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t, 6 decimals. The workhorse of exchange withdrawals: fees are typically under $1 and transfers confirm in about a minute. 19 confirmations is the common exchange requirement.
- BEP-20 (BNB Smart Chain) — contract
0x55d398326f99059fF775485246999027B3197955. Note the 18 decimals, unlike most USDT deployments. ~3-second blocks, sub-dollar fees, 15 confirmations typical.
- Polygon PoS —
0xc2132D05D31c914a87C6611C10748AEb04B58e8F, 6 decimals, 2-second blocks, cents per transfer. Exchanges may require many confirmations (often 128) because of the chain's re-org history.
- Arbitrum One —
0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9 (USDT0). Rollup security inherited from Ethereum, near-instant soft confirmations, very low fees.
- Optimism —
0x94b008aA00579c1307B0EF2c499aD98a8ce58e58. Same rollup model as Arbitrum; fees usually a few cents.
- Avalanche C-Chain —
0x9702230A8Ea53601f5cD2dc00fDBc13d4dF4A8c7, 6 decimals, ~2-second finality.
Which one should you use?
For exchange withdrawals, TRC-20 is usually the cheapest and most widely supported. For DeFi, ERC-20 has the deepest liquidity, while Arbitrum and Optimism give you the same assets at a fraction of the gas cost. For small everyday transfers, Polygon or a rollup wins on price.
The one rule that matters
The sending and receiving networks must match exactly. USDT on Tron cannot land in an Ethereum address, and "recovering" a cross-network deposit usually means paying a centralized exchange to rescue it — if it is possible at all. Always check the network selector before you hit confirm, and see our network reference for the verified contracts.
