Cross-chain · BNB Chain → Polygon

Swap BNB from BNB Chain to USDT on Polygon

Swap BNB from BNB Chain to USDT on Polygon. You send native BNB on BNB Chain and you receive Tether USDT on Polygon.

0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE on the source means BNB. No ERC-20 approval. BscScan records the native send on chain id 56, blocks about 3 seconds. Keep BNB for the fee. Tether on Polygon is 0xc2132D05D31c914a87C6611C10748AEb04B58e8F. Match it on Polygonscan. Chain id 137. USDT will not pay POL gas, so the destination needs POL already.

Diagram for Swap BNB from BNB Chain to USDT on Polygon
BNB leaves BNB Chain. USDT is what can arrive on Polygon.

The gas coin is the thing you sell

This page takes native BNB only. The ETH peg and the USDT peg on BNB Chain stay put. There is no approval step for BNB, which surprises people who just approved a token on another page. You still cannot spend the last BNB, because the network fee has to fit in the remainder.

Tether on Polygon is not Ethereum Tether

Match 0xc2132D05D31c914a87C6611C10748AEb04B58e8F on Polygonscan. Etherscan will not show this payout. It is Tether, not Circle's native USDC. Six decimals are expected. The token does not include POL. Add POL or the USDT sits in a wallet that cannot pay for a transfer.

USDC and POL if Tether was not the ask

Circle's native USDC is a different contract. POL is the gas-coin payout, a different page. The ETH peg is a different input. If you wanted USDT without leaving BNB Chain, buy it there. BNB Chain is the network you are leaving. The quote does not freeze the Tether amount.

Source speed is not the whole route

Chain id 56 can move in about 3 seconds. That fact does not time Polygonscan and does not lock a price. Read the minimum USDT. Sign only on BNB Chain. When you later look for the tokens, the wallet has to be on chain id 137, and it has to hold POL. A wallet on the wrong chain will look empty even after a successful route.

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 BNB from BNB Chain to USDT on Polygon?

0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE on the source means BNB. No ERC-20 approval. XAUConnect compares live routes and lets your own wallet sign.

Why does the BNB address look like an ETH placeholder?

Routers use 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE for the gas coin of the chain in front of you. On BNB Chain that is BNB, and BscScan shows a native send. The payout is not that marker. It is Tether, 0xc2132D05D31c914a87C6611C10748AEb04B58e8F, on Polygonscan. There is no ERC-20 approval on the BNB.

Does Polygon USDT use 18 decimals like BNB Chain USDT?

No. The USDT this page pays is the Polygon contract, and you should read the quote rather than a raw integer. BNB Chain's own USDT peg is 18 decimals, and this route is not spending that peg. You still need POL on chain id 137 to move the Tether after it arrives.

What if the quote says USDT but I needed USDC?

Do not sign. This route pays Tether only, contract 0xc2132D05D31c914a87C6611C10748AEb04B58e8F. Native USDC is a different page from the same BNB balance. Treating them as interchangeable is the wrong tool. Check Polygonscan before you send the tokens to anyone else. POL is required.

Live execution

Trade on XAUConnect

Open the swap page with this cross-chain route pre-selected, then connect your wallet on the source chain to quote and execute. You keep the keys.

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