When you withdraw or transfer USDT from your Wallet > Pay balance to an external address (such as Binance or another decentralized wallet), a fixed network fee of 2.1 USDT is charged per transaction, no matter how large that single withdrawal is. It covers the underlying blockchain network's miner Gas fee and processing cost.
⚠️ Tiered service fee on larger withdrawals: if your cumulative withdrawals within the same calendar day exceed 5,000 USDT, an additional 0.1% service fee is charged on the portion above 5,000 USDT. The first 5,000 USDT of the day is not subject to this service fee.
Example: you have already withdrawn 4,000 USDT today and start another withdrawal of 3,000 USDT. Of that, 2,000 USDT sits above the threshold, so you pay an extra 2 USDT service fee (2,000 × 0.1%) on top of the 2.1 USDT network fee.