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Last updated: August 2026

How to Deposit on Polymarket

Depositing means getting USDC onto the Polygon network in a wallet you control. There is no bank transfer into a Polymarket account, because there is no Polymarket account — the funds stay yours the whole time. The practical question is only which route gets USDC to the right network at the lowest cost and risk.

01.The three routes, and what each costs you

Every method is a variation on the same goal. They differ in how many steps, how much identity verification, and how many chances there are to make an irreversible mistake.

  • Buy USDC directly on Polygon through an exchange that supports withdrawal to that network, then send to your wallet. Fewest steps.
  • Buy on another chain and bridge across. More steps and more places to go wrong, but sometimes cheaper or the only option available.
  • Use an on-ramp built into a wallet or the platform, which trades a higher fee for far fewer opportunities to err.

02.The mistake that actually loses money

Sending the right asset on the wrong network. Addresses look identical across chains, so a transfer sent to your correct address on the wrong network will leave the exchange, arrive nowhere useful, and in many cases cannot be recovered by anyone. This is far more common than being hacked and there is no support ticket that fixes it.

  • Confirm both the asset and the network before every send, not just the address.
  • Send a small test amount first on any new route — the cost is trivial next to the downside.
  • Wait for the test to arrive before sending the rest. Every time.

03.Keep some gas

Transactions on the network need a small amount of the network's own token to pay for them. A wallet holding only USDC and no gas token cannot move anything, which is a confusing state to discover mid-trade. Keep a small buffer and top it up before it runs out.

  • USDC alone is not enough — you need the gas token to transact.
  • Keep a modest buffer rather than topping up transaction by transaction.
  • Running out mid-session is a common and entirely avoidable annoyance.

04.Consolidate rather than drip-feed

Transfer costs are largely flat, so ten small deposits cost roughly ten times what one deposit of the same total costs. If you intend to trade regularly, funding in fewer larger movements is meaningfully cheaper — and it is one of the few costs entirely within your control.

  • Costs scale with the number of transfers, not the amount moved.
  • Fewer, larger deposits are cheaper for the same capital deployed.
  • Balance that against not holding more on an exchange or in a hot wallet than you need.

Related Pages

Wallet SetupWithdrawingYour First TradeFees Explained

Frequently Asked Questions

How do I add funds to Polymarket?▼
Get USDC onto the Polygon network in a wallet you control. That means buying USDC on an exchange that supports Polygon withdrawals and sending it across, bridging from another chain, or using a built-in on-ramp. There is no bank deposit, because there is no platform-held account.
What is the most common deposit mistake?▼
Sending USDC on the wrong network. Addresses look the same across chains, so funds leave the exchange, arrive nowhere usable, and often cannot be recovered by anyone. Always confirm the network as well as the address, and send a small test first.
Why can I not make a transaction after depositing?▼
You probably hold USDC but no gas token. Network transactions are paid in the chain's own token, so a wallet with only USDC cannot move anything. Keep a small buffer of it.
Is there a minimum deposit?▼
The practical minimum is set by transfer costs rather than a platform rule. Because those costs are roughly flat, very small deposits are disproportionately expensive — consolidating into fewer larger transfers is the cheaper approach.
How long does a deposit take?▼
A direct transfer on Polygon usually confirms quickly. Bridging from another chain takes longer and varies by bridge. Build that delay into your plans if you are funding to catch a specific market.