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.
To fund your Polymarket account from the UK, you'll need to exchange GBP into USDC (Polymarket's standard settlement asset) and transfer it to a Polygon-compatible wallet. This comprehensive guide explores all UK Polymarket deposit options in 2026, detailing associated costs, processing times, and which approach suits your needs based on deposit size.
Method 1 — PolyGram Debit Card (Fastest)
How it works: PolyGram accepts Visa and Mastercard debit cards without intermediaries. Your sterling is instantly converted to USDC and credited to your PolyGram account in real time.
- 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)
PolyGram integrates Klarna as a checkout payment method for UK-based customers:
- Klarna Pay Later (30 days): Acquire USDC immediately, settle payment within 30 days — no interest charged
- Klarna Pay in 3: Divide the cost into 3 equal payments spread over 60 days
- Availability: Klarna mandates a UK registered address and performs a soft credit assessment
- Fees: Klarna imposes no interest on Pay Later or Pay in 3 options; standard FX rates apply
- Limits: Usually £30–£1,500 per transaction (subject to Klarna's credit decision)
Note: When using Klarna to purchase USDC for prediction markets, treat it as a genuine financial commitment — only proceed if you're confident you can repay even if your trades don't generate returns.
Method 3 — Coinbase UK Bank Transfer (Lowest Fees)
For UK customers moving substantial sums, this pathway delivers the most attractive fee structure:
- Create a Coinbase UK account (FCA-authorised) — registration completes in ~10 minutes using Yoti verification
- Connect your UK bank account through Open Banking or Faster Payments
- Purchase USDC with sterling — charge ~1.49% via Coinbase Advanced, ~0.5% via Coinbase Pro
- Transfer USDC to the Polygon blockchain (confirm you're selecting Polygon/MATIC, not Ethereum mainnet)
- Add the wallet to PolyGram or connect via MetaMask
Total fees: ~0.5–1.5% depending 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 reputation amongst UK cryptocurrency traders:
- UK Faster Payments bank transfer — zero deposit charge, typically settled within 2 hours
- Trade for USDC (Maker fee: 0.16%, Taker: 0.26%)
- Withdraw to Polygon blockchain — negligible network cost (~$0.01)
- Best for: current Kraken members, substantial deposits (£1,000+)
Method 5 — Revolut to PolyGram
Revolut enables UK customers to purchase cryptocurrency and appeals to active prediction market participants:
- Acquire USDC via Revolut — published exchange rate plus 0.5–2.5% Revolut surcharge
- Transfer to your PolyGram Polygon wallet address
- Note: Revolut UK crypto operates on a custodial model — verify you're sending from Revolut to a non-custodial external wallet
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 financial institutions 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 (most circumstances), Lloyds, Barclays debit
- Restrict or block: HSBC (credit cards primarily), Santander (inconsistent policy), NatWest (selective restrictions)
- Workaround: Switch to bank transfer methods if your institution declines card-based crypto transactions
Withdrawing Back to GBP (UK Bank)
To move your profits back into sterling in your UK account:
- Move USDC from PolyGram to your personal USDC wallet
- Transfer to Coinbase UK or Kraken
- Convert USDC into sterling
- Request GBP withdrawal via Faster Payments — typically lands same-day (usually within 2 hours)
Complete withdrawal duration: 30 minutes to 2 hours. Associated costs: ~0.5% FX spread + £0 bank charge.
FAQ — Polymarket Deposit UK
- Can I deposit with PayPal on Polymarket UK?
- Direct PayPal deposits are unavailable. PayPal UK prohibits transfers to cryptocurrency services. The alternative is to move funds from PayPal to your bank account first, then utilise a bank transfer approach to obtain USDC.
- Is Klarna safe for buying USDC?
- Klarna operates under FCA supervision as a licensed payment institution. Your purchase carries the same protections as any standard Klarna transaction. Only commit funds you're genuinely able to repay within the specified timeframe, regardless of whether your trading positions succeed.
- What is the maximum I can deposit?
- PolyGram card transactions are capped by your card provider's limits (usually £500–£1,000 per transaction). For bigger deposits, opt for bank transfer via a crypto exchange — both Coinbase and Kraken permit deposits of £50,000+ once Enhanced Verification is completed.