Cross-chain · Arbitrum One → BNB Chain

Swap USDT from Arbitrum One to BNB on BNB Chain

Swap USDT from Arbitrum One to BNB on BNB Chain. Tether USDT leaves Arbitrum One and native BNB arrives on BNB Chain.

Spend 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9, Tether on Arbitrum One. Arbiscan, chain id 42161, not Nova. Keep native ETH for the fee. Receive native BNB, marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE on BNB Chain, chain id 56. That is the gas coin, not a BEP-20, and not Binance-Peg ETH. BscScan shows the account balance. Blocks are about 3 seconds. The bridge is not obliged to match that pace.

Diagram for Swap USDT from Arbitrum One to BNB on BNB Chain — USDT leaves Arbitrum One. BNB is what can arrive on BNB Chain.

Ask for BNB only when you want the gas coin

The sentinel on chain id 56 means BNB. It does not mean 0x2170Ed0880ac9A755fd29B2688956BD959F933F8, and it does not mean BSC USDT. If a dapp needs the ETH peg, this credit will not satisfy a transferFrom call on that BEP-20. If a dapp needs to pay a fee, native BNB is exactly the balance that was missing. Match the goal to the marker before you sign.

Stable in, volatile gas out

Tether aims at a dollar. BNB does not. The amount of BNB is a live quote. Minimums expire. Six decimals on the way out of Arbitrum and eighteen on BNB mean you should read human units. Do not line up base integers from Arbiscan and BscScan and invent a rate. BNB Chain is chain id 56. Confirm the wallet network on the destination is that chain, not Ethereum and not Arbitrum.

Source approval still uses ETH

USDT is an ERC-20 on Arbitrum One, so allowance may be required on 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9. The fee is ETH, sentinel on chain id 42161, which is a different meaning of the same hex you see for BNB. Keep those meanings apart. You do not approve native BNB in order to receive it. There is no ERC-20 approval step on the destination for the gas coin.

Wrong for anyone keeping a dollar balance

Skip this page if the destination should stay in USDT or move to Binance-Peg USDC. Skip it if you wanted pegged ETH. Skip it if you wanted BNB as a BEP-20 wrapper rather than the native balance. Skip it on Nova, and skip it if the USDT you hold is the Ethereum contract 0xdAC17F958D2ee523a2206206994597C13D831ec7 rather than Arbitrum Tether.

Legal

Risk disclosure

XAUConnect is a non-custodial swap aggregator. Digital assets are volatile and may lose value rapidly. Content on this page is educational and not investment advice. Verify every contract address on the official block explorer before approving a transaction.

Frequently asked questions

What is the best way to swap USDT from Arbitrum One to BNB on BNB Chain?

Spend 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9, Tether on Arbitrum One. Arbiscan, chain id 42161, not Nova.

Does the 0xEeee address mean ETH on BNB Chain?

No. On BNB Chain the sentinel 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE means native BNB, the gas coin of chain id 56. Pegged ETH is 0x2170Ed0880ac9A755fd29B2688956BD959F933F8. You spend Tether at 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9 on Arbitrum One. BscScan will show BNB as a balance, not as a token supply at the sentinel. Confirm the address on the explorer before you sign.

Will I receive BSC USDT if I start with USDT?

No. The ticker changes. BSC USDT would be 0x55d398326f99059fF775485246999027B3197955. This output is native BNB. If you wanted the dollar token to survive the move, this is the wrong page. Arbiscan is for the spend. About 3 seconds is a block interval on chain id 56, not a quote lock.

What fee token do I need before I sign?

Native ETH on Arbitrum One, chain id 42161, not Nova. Tether cannot pay that fee. The BNB you receive cannot pay it either, because it arrives on the other chain, and only after the signature. Leave ETH in the source wallet. Then use BNB for later actions on chain id 56.

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