Polymarket is the largest prediction market by volume, but getting money onto the platform trips up more people than any other step. The reason is simple: Polymarket runs on the Polygon blockchain and settles everything in USDC, a stablecoin pegged 1:1 to the US dollar. You can't just link a bank account and deposit cash the way you would on Kalshi or Robinhood.
The good news: Polymarket has added several deposit methods in 2026 that make the process significantly easier than it used to be. The best method depends on how much you're depositing, whether you already own crypto, and how much you care about fees.
This guide covers every option, step by step, with the real costs of each.
Quick Comparison: Every Deposit Method
| Method | Best For | Speed | Fees | Minimum |
|---|---|---|---|---|
| Connect Coinbase | Beginners with no crypto | ~2 minutes | Low (~0.1-0.5%) | None |
| Transfer USDC from exchange | Regular traders | 1-5 minutes | Near-zero (gas only) | $3 on most chains |
| Debit/credit card (MoonPay) | Fastest possible deposit | Instant | High (up to 4.5%) | ~$30 |
| Apple Pay / Google Pay | Mobile convenience | Instant | High (3-5%) | ~$30 |
| MetaMask / Web3 wallet | Crypto-native users | 1-5 minutes | Near-zero (gas only) | None |
The bottom line: if you plan to trade regularly, set up the Coinbase or direct crypto transfer method. You'll save hundreds of dollars in fees over time compared to card deposits.
Method 1: Connect Coinbase (Recommended for Beginners)
This is the easiest way to deposit if you don't already hold crypto. No wallet addresses, no network selection, no bridging.
Step 1. Create a free Coinbase account at coinbase.com if you don't have one. Complete identity verification (takes 5-10 minutes).
Step 2. Add a payment method on Coinbase (bank account or debit card) and buy USDC. Coinbase charges a small spread on purchases — typically 0.5-1.5% depending on payment method. Bank transfers are cheapest.
Step 3. Log into Polymarket and click the blue "Deposit" button in the top right.
Step 4. Under "Use Crypto," tap "Connect Exchange."
Step 5. Polymarket uses a secure third party (Fun.xyz) to connect to your Coinbase account. Your login credentials are never stored by Polymarket. Two-factor authentication is required for every transfer.
Step 6. Authorize the connection through Coinbase, choose the amount, and confirm.
Funds arrive in approximately 2 minutes. There's no deposit limit, and fees are minimal beyond what you paid to buy USDC on Coinbase in the first place.
Why this method wins for beginners: You never have to copy a wallet address, select a blockchain network, or worry about sending funds to the wrong chain. Coinbase handles everything behind the scenes.
Binance, Kraken, Gemini, and Gate integrations are reportedly coming soon — but as of April 2026, Coinbase is the only exchange with direct Connect integration.
Method 2: Transfer Crypto Directly (Cheapest Option)
If you already hold crypto on any exchange or wallet, this is the cheapest way to fund your Polymarket account.
Step 1. Log into Polymarket and click "Deposit."
Step 2. Select "Use Crypto" and you'll see your unique Polymarket deposit address (starts with "0x..."). Copy this address.
Step 3. Go to your exchange (Coinbase, Kraken, Binance, Crypto.com, etc.) and select "Withdraw" or "Send."
Step 4. Choose the token you want to send. Polymarket accepts 22 tokens: USDC, USDT, ETH, BTC, SOL, DAI, ARB, POL, TRUMP, and others. Non-USDC tokens are automatically converted to USDC at market rate when they arrive.
Step 5. Paste your Polymarket deposit address.
Step 6 — the critical step: Select Polygon as the withdrawal network. This is where most mistakes happen. If your exchange lists it as "MATIC" or "Polygon PoS," that's the same thing. Polygon, Base, and Arbitrum all work and have low fees. Ethereum works too but has higher gas fees and a $10 minimum.
Step 7. Confirm the transaction. Funds arrive in 1-5 minutes on Polygon.
Cost breakdown: Polymarket charges zero on its side. You pay only the exchange's withdrawal fee (typically $0.08-$1.00 depending on the exchange and network) plus negligible Polygon gas fees (fractions of a cent).
Warning: Sending USDC on the wrong network can result in lost funds. If you're unsure, send a small test amount first — $5 or $10 — before transferring your full deposit.
Method 3: Debit or Credit Card via MoonPay (Fastest but Most Expensive)
If you need funds immediately and don't care about fees, this is the fastest path.
Step 1. Click "Deposit" on Polymarket.
Step 2. Select the "Card" or "Use Cash" option. You'll see MoonPay as the payment processor.
Step 3. Enter the amount of USD you want to convert to USDC.
Step 4. Enter your card details. MoonPay requires identity verification (KYC) for first-time users — have a government ID ready.
Step 5. Confirm the purchase. USDC is sent directly to your Polymarket wallet. Funds are available instantly.
The catch: fees. MoonPay charges up to 4.5% plus a spread on the USDC purchase. On a $100 deposit, you'll pay roughly $4-5 in fees before you've placed a single trade. On a $1,000 deposit, that's $45. Over time, this adds up fast.
Apple Pay and Google Pay are also available through the same MoonPay integration, with similar fee structures. The deposit limit via card is $115,000.
When to use this method: Only if you need to deposit right now and don't have time to set up a Coinbase account or transfer crypto. For any amount over $100, the Coinbase Connect method saves you real money.
Method 4: MetaMask or Web3 Wallet (For Crypto-Native Users)
If you already have a MetaMask, Coinbase Wallet, Trust Wallet, or Phantom wallet with USDC on Polygon, depositing is straightforward.
Step 1. Connect your wallet to Polymarket. If it's your first time, Polymarket will prompt you to switch to the Polygon network.
Step 2. Click "Deposit" and select your connected wallet.
Step 3. Approve the Polymarket contract to spend your USDC (one-time transaction).
Step 4. Enter the deposit amount and confirm.
If your USDC is on Ethereum mainnet instead of Polygon, you'll need to bridge it first. The official Polygon Bridge, Hop Protocol, or Across can move USDC from Ethereum to Polygon. Bridging typically takes 5-15 minutes and costs a few dollars in Ethereum gas fees.
Cost: Near-zero. Polygon gas fees are fractions of a cent. The only real cost is the one-time contract approval transaction.
The Cheapest Way to Get USDC for Polymarket
For regular traders, here's the optimal flow that minimizes fees:
If you're starting from USD (US traders):
- Open a Coinbase account (free).
- Deposit USD via bank transfer (free on Coinbase).
- Buy USDC on Coinbase (~0.5% fee).
- Use Connect Coinbase on Polymarket to transfer (~2 minutes, minimal fee).
- Total cost on $500 deposit: approximately $2.50.
Compare that to the card method: $500 deposit via MoonPay costs approximately $22.50 in fees. That's a 9x difference.
If you already hold crypto:
- Convert to USDC on your exchange (small trading fee, typically 0.1%).
- Withdraw USDC on Polygon to your Polymarket deposit address ($0.08-$1.00 fee).
- Total cost on $500 deposit: approximately $0.50-$1.50.
If you're outside the US: Crypto.com offers USDC withdrawals to Polygon for a flat $0.08 fee — the cheapest option available. This is the same company behind OG prediction market, so if you already have a Crypto.com account, the transfer flow is seamless. Kraken and Binance also support Polygon USDC withdrawals at competitive rates.
Common Mistakes (and How to Avoid Them)
Sending on the Wrong Network
This is the #1 mistake. If you send USDC on Ethereum mainnet to your Polygon deposit address, the funds won't appear in your Polymarket account. They're not lost — they're sitting in your wallet on the wrong chain — but recovering them requires bridging, which costs gas and takes time. Always double-check the network before confirming a withdrawal.
Sending Non-USDC Tokens Without Checking Support
Polymarket accepts 22 tokens, but if you send a token that's not on the supported list, recovery may be difficult or impossible. Stick to USDC, USDT, or ETH if you're unsure.
Paying Card Fees on Large Deposits
MoonPay's 4.5% fee is acceptable on a $50 test deposit. It's not acceptable on $1,000+. Set up the Coinbase Connect method for any amount you plan to trade seriously with.
Not Saving Your Deposit Address
Your Polymarket deposit address is unique to your account. Bookmark it or save it in your notes app. You'll use it every time you transfer crypto from an external wallet or exchange.
Forgetting About Withdrawals
When you eventually want to withdraw profits, Polymarket sends USDC back to your wallet on Polygon. From there, you'll need to transfer to an exchange and sell for fiat. Plan your withdrawal path before you deposit — the reverse of whichever deposit method you used typically works best.
How Much Should You Deposit to Start?
Most guides recommend $50-$200 for beginners. Here's the logic:
$50 is enough to buy shares across 5-10 different markets, giving you diversification while you learn the mechanics. At typical contract prices of $0.20-$0.80, $50 buys you 60-250 shares depending on the markets you choose.
$200 gives you enough to take meaningful positions and actually feel the impact of price movements. It's also enough to experiment with different market categories — sports, politics, crypto, economics — and figure out where you have an edge.
Don't deposit more than you can afford to lose. Prediction markets are volatile. Contract prices can swing 30-50% on a single news event. If you're new, start small, track your performance, and scale up only after you've proven to yourself that you can trade profitably. For strategies on how to approach this, see our guide on how prediction markets work. Once you're comfortable with the mechanics, our arbitrage guide covers how to profit from price differences between platforms — a strategy that requires funded accounts on both Polymarket and Kalshi.
Polymarket Deposit Fees vs. Kalshi Deposit Fees
One of the main reasons traders choose Polymarket over Kalshi is the fee advantage. But the deposit experience is where Kalshi wins on simplicity.
| Polymarket | Kalshi | |
|---|---|---|
| Bank transfer | Not direct — must go through exchange first | Free (ACH) |
| Debit card | 3-4.5% via MoonPay | 2% processing fee |
| PayPal / Venmo | Not supported | Free |
| Crypto | Near-zero (direct USDC transfer) | Free from Kalshi side (gas fees apply) |
| Apple Pay | 3-5% via MoonPay | Not supported |
| Time to trade | 2-10 minutes depending on method | 5 minutes (instant after KYC) |
If you value simplicity above all else — link a bank account, deposit dollars, start trading — Kalshi is easier. If you value lower ongoing costs and are willing to spend 10 minutes learning the crypto deposit flow, Polymarket saves you money on every trade. For a full comparison, see our Polymarket vs. Kalshi breakdown.
A Note on Taxes
Every deposit and withdrawal on Polymarket is a crypto transaction. While depositing USDC itself is not a taxable event (you're moving stablecoins, not realizing gains), your subsequent trades are. Each time you buy or sell shares on Polymarket, the IRS treats it as a crypto disposal. Polymarket does not issue 1099 forms or any tax documents — you're responsible for your own record-keeping.
Keep a log of every deposit, every trade, and every withdrawal. Your future self at tax time will thank you. For the full breakdown of how prediction market profits are taxed, see our tax guide.
Frequently Asked Questions
Does Polymarket charge deposit fees?
No. Polymarket itself charges zero fees on deposits and withdrawals. However, you'll pay external costs: blockchain gas fees (fractions of a cent on Polygon), exchange withdrawal fees ($0.08-$1.00), and payment processor fees if using a card (up to 4.5% via MoonPay). The cheapest path is transferring USDC directly from an exchange on the Polygon network.
What is the minimum deposit on Polymarket?
There is no minimum deposit enforced by Polymarket. However, MoonPay (the card payment processor) has a minimum purchase of approximately $30. Direct crypto transfers have a $3 minimum on most chains. We recommend starting with $50-$200 to have enough to diversify across multiple markets.
Can I deposit with a bank account directly?
Not directly. Polymarket does not accept bank transfers. You need to first buy USDC on an exchange like Coinbase, then transfer it to Polymarket. The Coinbase Connect feature makes this nearly as simple as a direct bank deposit — it takes about 2 minutes once set up.
What happens if I send USDC on the wrong network?
If you send USDC on Ethereum instead of Polygon, the funds won't appear in your Polymarket balance. They're not permanently lost — they're in your wallet on the Ethereum chain. You'll need to bridge them to Polygon using the Polygon Bridge or a service like Hop Protocol, which costs a few dollars in Ethereum gas. Always send a small test amount first.
Can I deposit Bitcoin or Ethereum instead of USDC?
Yes. Polymarket accepts 22 tokens including BTC, ETH, SOL, USDT, DAI, and others. Non-USDC tokens are automatically converted to USDC at market rate when deposited. There may be a small conversion spread on the swap.
How do I withdraw from Polymarket?
Click "Withdraw" in your Polymarket account, enter the amount, and USDC is sent to your connected wallet on Polygon. From there, transfer USDC to an exchange (Coinbase, Kraken, Binance) and sell for fiat currency. Polymarket charges no withdrawal fees — you pay only network gas and exchange fees on the receiving end.
Is Polymarket available in the US?
Yes. Polymarket re-entered the US market in late 2025 after acquiring CFTC-licensed exchange QCEX for $112 million. The US platform is available through a phased rollout. For full details on availability and legal status, see our legal guide.
Should I use Polymarket or Kalshi?
It depends on your priorities. Polymarket has lower trading fees, deeper liquidity on political and crypto markets, and a more robust API. Kalshi has simpler deposits (direct bank transfer), pays interest on balances (~4% APY), and has deeper sports markets. Most serious traders use both. See our full Polymarket vs. Kalshi comparison, our best prediction market apps ranking, and our Dune Analytics guide for tracking volume and liquidity across platforms.
