When moving USDT from OKX to Binance, the cheapest way is to use the BEP-20 (BNB Chain) network, not TRC-20. The golden rule is simple: the network you pick for withdrawal must match the network of the deposit address on the receiving side exactly. If they don't match, your funds can be lost and are usually gone forever.
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Step 1: Get your Binance deposit address and choose the network first
Sort out the receiving end before you do anything on OKX.
What to do: Log in to Binance, go to the USDT deposit page, generate a deposit address, and select the network.
How to do it:
In the Binance app, tap "Wallet" → "Deposit" and pick USDT.
You will see a list of available networks (TRC-20, ERC-20, BEP-20, etc.).
Choose the network first, then copy the address. Whatever chain you select here must be the same chain you choose later on OKX.
Finish line: You have copied your Binance USDT deposit address and know which network it belongs to.
Step 2: Withdraw from OKX using the exact same network
After Binance is set up, return to OKX to make the transfer.
What to do: Withdraw USDT from OKX, making sure the network matches Binance exactly.
How to do it:
On OKX, go to "Assets" → "Withdraw" and select USDT.
Paste the Binance deposit address and double-check it is correct.
The most important step: Choose the withdrawal network. BEP-20 (BNB Chain) is currently the lowest-cost option, with a fee around 0.02–0.1 USDT and confirmation in under a minute. TRC-20 is also fast, but fees have risen to 2–5 USDT. ERC-20 is even more expensive and slower — try to avoid it.
Finish line: The network field on the withdrawal page is locked to BEP-20 and the fee shows a very small amount.
Risk reminder: Picking the wrong network is the most common reason people lose USDT during transfers. If you select ERC-20 but paste a BEP-20 address, the funds most likely cannot be recovered. Before you confirm, always double-check the network label and address format — BEP-20 addresses usually start with 0x.
Step 3: Check the minimum withdrawal amount and test with a small amount first
While saving fees, make sure you don't fall into the minimum limit trap.
What to do: Make sure your withdrawal amount meets OKX's minimum limit, and send a tiny test transaction first.
How to do it:
The OKX withdrawal page usually shows the minimum amount for that coin and network. You can't withdraw anything below that.
No matter how large the total sum is, whenever you move coins for the first time or use a new address, always send the smallest possible amount first (like 10 USDT). Once it arrives safely in Binance, send the rest. This habit can save you from losing a big amount while only costing a few cents in fees for the test.
How to verify the transfer is complete
After you submit the withdrawal, check the status under "Withdrawal History" on OKX. If it shows "Completed", go to Binance's "Deposit History" to confirm it arrived. BEP-20 transfers usually take less than a minute to confirm.
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Next steps after USDT arrives
When USDT lands in Binance, it lands in your "Funding Wallet" by default. If you want to trade with it, you need to move it from the Funding Wallet to the "Spot Wallet" or "Futures Wallet." This internal transfer is free and instant. It's a good idea to save both the OKX withdrawal record (with TxID) and the Binance deposit record. If anything ever needs to be checked, having the on-chain proof is better than any other kind of proof.
