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 funds onto Polymarket from the UK means converting your GBP into USDC (Polymarket's primary asset) and transferring it to a Polygon-based wallet. This comprehensive guide explores all deposit methods available to UK users in 2026, detailing associated costs, processing times, and which option suits your situation best.
Method 1 — PolyGram Debit Card (Fastest)
How it works: PolyGram directly accepts Visa and Mastercard debit cards. Your sterling is instantly converted into USDC and credited to your PolyGram account with no extra steps.
- Speed: 2–5 minutes
- Minimum: £5
- Fees: ~1.5% card processing fee (incorporated into the displayed exchange rate)
- Best for: amounts under £200, urgent top-ups
- Limits: Your card issuer's standard limits apply (£500–£1,000 per single transaction with most UK providers)
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 — no interest charged
- Klarna Pay in 3: Divide your payment into 3 equal chunks spread across 60 days
- Availability: Klarna requires a registered UK address and conducts a soft credit assessment
- Fees: Klarna imposes zero interest on Pay Later/Pay in 3 options; standard exchange rate applies
- Limits: Usually £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 money you're prepared to lose if your prediction doesn't succeed.
Method 3 — Coinbase UK Bank Transfer (Lowest Fees)
This represents the most economical choice for UK residents moving substantial sums:
- Create a Coinbase UK account (FCA-authorised) — registration takes roughly 10 minutes using Yoti verification
- Connect your UK bank account through Open Banking or Faster Payments
- Purchase USDC using GBP — approximately 1.49% fee via Coinbase Advanced, around 0.5% via Coinbase Pro
- Transfer USDC to the Polygon blockchain (confirm you're selecting Polygon/MATIC, not Ethereum)
- Link 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 enjoys strong adoption among UK cryptocurrency enthusiasts:
- UK Faster Payments bank transfer — zero 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 transactions across the UK and attracts many prediction market participants:
- Acquire USDC through Revolut — standard 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 moving funds from Revolut to an independent 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 banks enforce restrictions on debit and credit card transactions involving cryptocurrency. As of June 2026:
- Allow: Monzo, Starling, Chase UK, Halifax (most circumstances), Lloyds, Barclays debit
- Restrict or block: HSBC (credit cards only), Santander (inconsistent policy), NatWest (partial restrictions)
- Workaround: Switch to a bank transfer if your financial institution blocks card-based crypto transactions
Withdrawing Back to GBP (UK Bank)
To move your profits back into your UK bank account:
- Transfer USDC from PolyGram to your personal USDC wallet
- Move it to Coinbase UK or Kraken
- Exchange USDC back into GBP
- Request GBP withdrawal via Faster Payments — typically settles same-day (often under 2 hours)
Complete withdrawal duration: 30 minutes to 2 hours. Associated costs: ~0.5% conversion charge + £0 bank fee.
FAQ — Polymarket Deposit UK
- Can I deposit with PayPal on Polymarket UK?
- Direct PayPal deposits are unavailable. PayPal UK doesn't facilitate transfers to cryptocurrency platforms. Your only option is moving funds from PayPal to your bank account first, then using a bank transfer approach to obtain USDC.
- Is Klarna safe for buying USDC?
- Klarna operates as an FCA-regulated payment provider. Your purchase carries the same security as any standard Klarna transaction. Only commit funds you're genuinely able to repay within the specified timeframe irrespective of your trading results.
- What is the maximum I can deposit?
- PolyGram card deposits are capped by your card provider's restrictions (commonly £500–£1,000 per transaction). For bigger deposits, opt for a crypto exchange bank transfer — Coinbase and Kraken both accept deposits of £50,000+ once Enhanced Verification is completed.