In this guide
- Method 1 — PolyGram Debit Card (Fastest)
- Method 2 — PolyGram via Klarna (Buy Now, Flexible Payment)
- Method 3 — Coinbase UK Bank Transfer (Lowest Fees)
- Method 4 — Kraken UK Bank Transfer
- Method 5 — Revolut to PolyGram
- UK Bank Transfer Fees Comparison
- What UK Banks Block Crypto Purchases?
- Withdrawing Back to GBP (UK Bank)
- FAQ — Polymarket Deposit UK
Fastest method: PolyGram + Visa/Mastercard debit card → funds available in under 5 minutes. For larger amounts: Coinbase UK bank transfer (Faster Payments) → USDC → PolyGram wallet. Klarna is available as a buy-now-pay-later option via PolyGram's payment flow.
Getting money into Polymarket from the UK means converting your GBP into USDC (Polymarket's primary settlement currency) and transferring it to a Polygon-based wallet. This comprehensive guide explores all deposit options available to UK traders in 2026, detailing transaction costs, processing times, and which approach suits different investment sizes.
Method 1 — PolyGram Debit Card (Fastest)
How it works: PolyGram accepts Visa and Mastercard debit cards as a direct payment method. Your sterling is instantly converted to USDC and credited to your PolyGram account.
- Speed: 2–5 minutes
- Minimum: £5
- Fees: ~1.5% card processing fee (included in the exchange rate displayed)
- Best for: amounts under £200, quick top-ups
- Limits: Standard card limits apply (£500–£1,000 per transaction with most UK banks)
Method 2 — PolyGram via Klarna (Buy Now, Flexible Payment)
Klarna is integrated into PolyGram's checkout experience for UK customers:
- Klarna Pay Later (30 days): Acquire USDC immediately, settle payment within 30 days — zero interest charged
- Klarna Pay in 3: Divide the cost into 3 equal payments spread across 60 days
- Availability: Klarna requires a UK address for billing and conducts a soft credit assessment
- Fees: Klarna does not impose interest on Pay Later or Pay in 3 arrangements; standard FX rates apply
- Limits: Typically £30–£1,500 per transaction (determined by Klarna's credit assessment)
Note: When using Klarna to purchase USDC for prediction markets, treat it as a standard financial commitment — only spend what you can repay if your trades don't generate returns.
Method 3 — Coinbase UK Bank Transfer (Lowest Fees)
This route offers the best value for UK customers moving substantial sums:
- Register with Coinbase UK (FCA-authorised) — identity verification via Yoti takes roughly 10 minutes
- Connect your UK bank account using Open Banking or Faster Payments infrastructure
- Purchase USDC with sterling — cost approximately 1.49% via Coinbase Advanced, around 0.5% via Coinbase Pro
- Transfer USDC across the Polygon network (confirm you're using Polygon/MATIC, not Ethereum mainnet)
- Add the wallet to PolyGram or connect via MetaMask
Total fees: ~0.5–1.5% based on your Coinbase subscription level. Speed: 10–30 minutes. Best for: deposits exceeding £200.
Method 4 — Kraken UK Bank Transfer
Kraken holds FCA authorisation and maintains a strong following among UK cryptocurrency traders:
- UK Faster Payments bank transfer — no deposit charge, credited within 2 hours
- Purchase USDC (Maker fee: 0.16%, Taker: 0.26%)
- Move to Polygon network — negligible network cost (~$0.01)
- Best for: Kraken account holders, substantial deposits (£1,000+)
Method 5 — Revolut to PolyGram
Revolut enables cryptocurrency purchases throughout the UK and attracts many prediction market participants:
- Acquire USDC via Revolut — mid-market rate plus 0.5–2.5% Revolut surcharge
- Direct transfer to your PolyGram Polygon wallet
- Note: Revolut UK crypto operates on a custodial model — confirm you're transferring from Revolut to a non-custodial address
UK Bank Transfer Fees Comparison
| Method | Deposit Fee | USDC Buy Fee | Speed | Minimum |
|---|---|---|---|---|
| PolyGram debit card | ~1.5% | Included | 2–5 min | £5 |
| PolyGram Klarna | 0% | Included | Instant | £30 |
| Coinbase UK (bank) | Free | 0.5–1.49% | 10–30 min | £1 |
| Kraken UK (bank) | Free | 0.16–0.26% | 2–4 hours | £10 |
| Revolut | Free | 0.5–2.5% | 5–15 min | £1 |
What UK Banks Block Crypto Purchases?
Certain UK banks impose restrictions on debit and credit card transactions involving cryptocurrency. As of June 2026, the landscape looks like this:
- Allow: Monzo, Starling, Chase UK, Halifax (general use), Lloyds, Barclays debit
- Restrict or block: HSBC (credit cards only), Santander (inconsistent), NatWest (partial restrictions)
- Workaround: Switch to bank transfer instead of card payments if your institution restricts card-based crypto transactions
Withdrawing Back to GBP (UK Bank)
To cash out your trading profits to a UK bank account:
- Move USDC from PolyGram to your personal USDC wallet
- Transfer to Coinbase UK or Kraken
- Convert USDC back to sterling
- Withdraw pounds via Faster Payments — typically lands within 2 hours
Overall withdrawal duration: 30 minutes to 2 hours. Costs: ~0.5% FX margin plus £0 bank fees.
FAQ — Polymarket Deposit UK
- Can I deposit with PayPal on Polymarket UK?
- PayPal is not a supported method. PayPal UK prohibits direct transfers to cryptocurrency platforms. The alternative is withdrawing from PayPal to your bank account first, then using a bank transfer approach to acquire USDC.
- Is Klarna safe for buying USDC?
- Klarna operates under FCA regulation as a licensed payment provider. Your purchase carries the same protections as any standard Klarna transaction. Only commit funds you're confident you can repay within the specified timeframe, regardless of whether your market positions succeed.
- What is the maximum I can deposit?
- PolyGram's card deposit ceiling is set by your card provider (usually £500–£1,000 per transaction). For bigger transfers, opt for bank transfer via a crypto exchange — both Coinbase and Kraken permit deposits of £50,000 and above once you complete Enhanced Verification.