Polymarket Minimum Deposit by Method
Polymarket charges no deposit fee on any method. The costs you see above come entirely from third-party networks and services. For deposits over $100, transferring USDC directly from a crypto exchange like Coinbase is significantly cheaper than MoonPay. On a $500 deposit, MoonPay at 3% costs $15 in fees. The Coinbase route costs under $0.10 total.
| Method | Minimum deposit | Polymarket fee | Third-party fee | Processing time |
|---|---|---|---|---|
| USDC via Polygon (from exchange) | ~$1 USDC | None | Gas under $0.01 | 1–5 minutes |
| USDC via other chains (Arbitrum, Base, Solana) | ~$1 USDC | None | Network gas (low) | Seconds to minutes |
| USDC bridge from Ethereum mainnet | ~$1 USDC | None | Bridge + ETH gas ($1–$25+) | 10–45 minutes |
| MoonPay debit card | ~$20–$30 | None | 3–5% of deposit amount | 5–15 minutes |
| MoonPay bank transfer (ACH) | ~$20–$30 | None | Lower than card; varies | 1–3 business days |
| Direct ACH (Polymarket US) | No stated minimum | None | None from most banks | 1–3 business days |
| Wire transfer | No stated minimum | None | Bank wire fee may apply | Same business day |
Which Deposit Method Makes Most Sense for a Minimum Deposit?
The right method depends on whether you already hold crypto and how much friction you want to deal with.
- Coinbase to Polygon is the best overall option for most US users depositing $50 or more. Buy USDC on Coinbase (no fee for USD to USDC conversion for most users), then withdraw to your Polymarket Polygon address. Coinbase covers the Polygon network fee on withdrawals, so the total cost is effectively zero beyond a negligible spread. This takes five to thirty minutes from start to finish.
- MoonPay debit card is the right call if you do not have a crypto exchange account and want to fund quickly. It is built directly into the Polymarket deposit screen, handles the USD-to-USDC conversion, and delivers USDC to your account in five to fifteen minutes. The cost is real though: at 3 to 5% on a $20 deposit you are paying $0.60 to $1.00 just to get started. For one-time small deposits it is acceptable. For regular funding it adds up quickly.
- Direct ACH on Polymarket US is the cleanest no-crypto option. No conversion fees, no MoonPay, no blockchain complexity. Funds take one to three business days to arrive. This method is available through Polymarket US and is worth using if you prefer to stay out of the crypto ecosystem entirely.
- Ethereum mainnet bridge only makes sense if you already hold USDC on Ethereum and do not have an exchange account to route through. The bridge fee plus Ethereum gas can run $5 to $25 depending on network conditions, which makes it one of the most expensive options for small deposits.
The Real Cost of a $20 Deposit Across Methods
| Method | You send | USDC you receive | Total cost |
|---|---|---|---|
| Coinbase + Polygon | $20 | ~$19.99 | Under $0.01 |
| MoonPay debit card (3%) | $20 | ~$19.40 | ~$0.60 |
| MoonPay debit card (5%) | $20 | ~$19.00 | ~$1.00 |
| Direct ACH (Polymarket US) | $20 | $20.00 | None |
| Ethereum bridge | $20 + $5–$25 gas | ~$19.90 | $5–$25 in gas |
The Ethereum bridge is included only to illustrate why it is not recommended for small deposits. Bridge and gas fees can exceed the entire deposit amount at low values.
How to Make Your First Deposit on Polymarket
Account KYC must be complete before any deposit is processed. Identity verification typically completes instantly for most users; manual review takes one to three business days in edge cases.
- Open the deposit screen: In the Polymarket app, tap Deposit from the home screen or portfolio view. On the web interface, click your balance in the top navigation and select Deposit.
- Choose your method: Select Deposit Crypto to fund with USDC from a wallet or exchange, or Deposit Cash to use MoonPay (card or bank) or direct ACH on Polymarket US.
- For crypto deposits: Copy your Polymarket Polygon address from the deposit screen. In your exchange (Coinbase, Kraken, etc.), initiate a USDC withdrawal, select Polygon as the network, paste your Polymarket address, and confirm. Double-check the network before confirming. Sending USDC on the wrong network can result in lost funds.
- For MoonPay deposits: Enter the dollar amount, provide your debit card details, and complete MoonPay's one-time KYC if prompted. MoonPay buys USDC and delivers it to your Polymarket Polygon address automatically.
- Wait for confirmation: Polygon deposits typically arrive within one to five minutes. MoonPay card deposits take five to fifteen minutes. ACH transfers take one to three business days.
- Start trading: Your balance appears as pUSD (Polymarket USD), which is backed 1:1 by USDC and converts automatically on withdrawal. The value is identical to USDC at all times.
What Can You Trade With a $20 Deposit?
A $20 deposit goes a meaningful distance on Polymarket. Individual contracts start at $0.01 USDC, so a $20 balance can cover hundreds of contracts on a single market or a spread of smaller positions across multiple markets.
At $0.40 per contract — a mid-range price on a competitive market — $20 buys 50 contracts. If that market resolves in your favor, 50 contracts at $1.00 each returns $50 USDC, a $30 profit on a $20 position. The $20 welcome bonus you receive after the qualifying deposit effectively gives you $40 of trading power to start with, which extends the range of positions you can take without putting more of your own money at risk.
Short-cycle markets like the 15-minute and 4-minute Bitcoin contracts are also fully accessible with a $20 balance. Each cycle resolves quickly, so a small starting balance can generate real trading activity without needing a larger account. The risk profile is different from longer-dated contracts, but the entry cost is the same.
One thing a $20 balance does not give you is the ability to take large positions in thin markets without moving the price against yourself. Deep-liquidity markets like Bitcoin threshold contracts and major election contracts are better suited to small starting balances because the spread is tighter. For a fuller sense of what markets are available and how they work, see our overview of how prediction market contracts work.
Can You Claim the Welcome Bonus With a Minimum Deposit?
Yes. The Polymarket welcome bonus gives new US users $50 in trading credit when they deposit at least $20 and complete a qualifying amount of trading activity. Since the minimum qualifying deposit is $20 and the practical deposit minimum is around the same level for most methods, a single opening deposit covers both requirements.
A few things to know about how the bonus works:
- Promo code required at sign-up. The code must be entered when creating the account. It cannot be applied retroactively.
- New accounts only. The offer is not available to existing users who have previously traded on Polymarket.
- Bonus credited within 30 days. The $50 trading credit appears in your account after the qualifying deposit clears.
- Not immediately withdrawable. The bonus funds are usable for trading but become withdrawable only after $50 of trading activity with the bonus balance.
- State restrictions apply. The bonus is not available in AZ, IL, MA, MD, MI, MT, NJ, NV, and OH.
Polymarket vs Kalshi: Minimum Deposit Comparison
| Feature | Polymarket US | Kalshi |
|---|---|---|
| Platform minimum deposit | No stated minimum (~$1 via crypto) | $10 |
| Welcome bonus qualifying deposit | $20 | $10 |
| Welcome bonus value | $50 trading credit | $10 cash bonus |
| Deposit currency | USDC (stablecoin) | USD (dollars) |
| Zero-fee deposit method | Coinbase + Polygon, Direct ACH | ACH, PayPal, Venmo |
| Instant no-fee deposit | No (Coinbase requires crypto setup) | Yes (PayPal, Venmo) |
| Interest on idle balance | No | 3.95% APY |
Kalshi's $10 minimum and dollar-native funding make it the simpler starting point for users who do not already hold crypto. Polymarket's welcome bonus is significantly larger in value ($50 vs $10) but requires the extra step of acquiring USDC. For a full comparison of both platforms, see our Kalshi versus Polymarket guide.
The Bottom Line on Polymarket's Minimum Deposit
Polymarket has no hard minimum deposit from the platform's side. The practical floor is around $20 for most users, driven by MoonPay's minimum if using a card, or the cost of making a crypto transfer worthwhile. The cheapest route to a funded account is buying USDC on Coinbase and sending it to Polygon, which carries almost no cost. The welcome bonus requires a $20 qualifying deposit and gives $50 in trading credit, making it one of the more valuable offers in the prediction market space.
For a full look at the platform covering fees, market depth, and the trading experience, see our full Polymarket review.
Polymarket Minimum Deposit FAQ
What is the minimum deposit on Polymarket?
Polymarket has no platform-enforced minimum deposit. The practical minimum is around $1 USDC via direct crypto transfer on Polygon. MoonPay card deposits typically require around $20 to $30 due to the on-ramp provider's own minimum. The welcome bonus requires a $20 qualifying deposit.
What is the cheapest way to make a minimum deposit on Polymarket?
Transferring USDC from Coinbase to your Polymarket Polygon address costs under $0.01 in network gas. It requires a Coinbase account, but the near-zero fee makes it the best option for any deposit above a few dollars. MoonPay is more convenient but charges 3 to 5% of the deposit amount.
Can I deposit with a debit card on Polymarket?
Yes, through MoonPay, which is built into the Polymarket deposit screen. MoonPay converts your card payment to USDC and delivers it to your Polymarket account. Fees are typically 3 to 5% of the deposit amount. Most US debit cards are accepted; credit cards are often declined by card issuers for crypto purchases.
Is there a minimum deposit to claim the Polymarket welcome bonus?
Yes. A $20 qualifying deposit is required to activate the $50 welcome bonus. The promo code must be entered during account sign-up and the bonus credits within 30 days of the qualifying deposit.
Can I deposit dollars directly without using crypto?
Yes. Polymarket US supports direct ACH bank transfers, which send dollars directly to your account without requiring you to buy USDC yourself. MoonPay's bank transfer option also works for this. Both are slower than card or crypto transfers but carry no Polymarket fees.
What is pUSD and why does my balance show that instead of USDC?
pUSD (Polymarket USD) is Polymarket's internal stablecoin introduced in April 2026. It is backed 1:1 by USDC reserves and converts automatically when you withdraw. There is no action required on your part. The value is identical to USDC at all times.
Does Polymarket charge a deposit fee?
No. Polymarket charges no deposit fee on any method. The only costs come from third-party services: MoonPay charges 3 to 5% for card deposits, blockchain networks charge gas fees for crypto transfers (negligible on Polygon), and Ethereum bridge fees apply when bridging from mainnet.
What is the minimum age to deposit on Polymarket?
18 years old. Identity verification is required before any deposit or trading activity is enabled.
