Deposit
Your balance on Backd is USDC in your own Polymarket wallet on Polygon. You can deposit from 13 chains in whatever dollar coin you hold. Polymarket's transfer service converts it and it lands as dollars.
Before you deposit
Link your wallet on the Wallet page. It happens once. Already on Polymarket with the same wallet app? That balance is this balance. Nothing to move.
From your wallet
- Open Wallet, then Deposit.
You get a grid of chain logos, all 13 at once. Robinhood (USDG) is first, then Polygon, Ethereum, Base, Arbitrum, Optimism, BNB Chain, Solana, Bitcoin, Tron, Monad, HyperEVM and Ink.
- Tap the chain your money is on.
The tile expands into that chain's coins. Pick one. Backd shows how much of it is in your wallet.
- Type the amount.
Backd checks it against the chain's minimum and your balance before your wallet is asked to sign anything.
- Confirm in your wallet.
Your wallet sends the coins to your Polymarket deposit address for that chain. One transaction.
- Wait, usually 15 to 60 seconds.
Your balance updates by itself. You can back a call straight away.
From an exchange or another wallet
Each chain has its own deposit address, shown on the Deposit screen with a copy button. Solana, Bitcoin and Tron work this way only, since a browser wallet can't send on them. Send to the address for the chain you're sending on, from any wallet or exchange. A coin Polymarket's transfer service doesn't accept, or a chain that isn't listed, won't arrive. The addresses don't change.
Chains, coins and minimums
Anything under a chain's minimum sits with Polymarket's transfer service unprocessed, so Backd won't let you send less. The Deposit screen shows the live list and minimums. This is the built-in list at the time of writing.
| Chain | Coin | Minimum |
|---|---|---|
| Robinhood Chain | USDG | $2 |
| Polygon | USDC, USDC.e, USDT | $2 |
| Ethereum | USDC, USDT | $3 |
| Base | USDC | $2 |
| Arbitrum | USDC | $2 |
| Optimism | USDC | $2 |
| BNB Smart Chain | USDC | $2 |
| Solana | USDC | $2 |
| Bitcoin, Tron, Monad, HyperEVM, Ink | As the Deposit screen lists them | Shown on the screen |
If something looks wrong
Deposit not showing after a few minutes. Check it went to the address for that chain, that it was at least the minimum, and that the transaction has confirmed on a block explorer. The Deposit screen links to one. Then tell us with the transaction hash.
Balance lower than expected. Open positions and the fee on filled orders come out of the balance. The Wallet page shows both.