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 involves exchanging GBP into USDC (Polymarket's primary asset) and routing it through a Polygon wallet address. This comprehensive guide walks through all available deposit options for UK Polymarket users in 2026, detailing transaction costs, processing times, and which approach suits various deposit amounts.
Method 1 — PolyGram Debit Card (Fastest)
How it works: PolyGram takes Visa and Mastercard debit cards as payment. 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 (factored into the quoted exchange rate)
- Best for: amounts under £200, rapid top-ups
- Limits: Standard card issuer 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 for UK-based traders:
- Klarna Pay Later (30 days): Acquire USDC immediately, settle within 30 days — no interest charged
- Klarna Pay in 3: Divide payment across 3 equal portions spread over 60 days
- Availability: Klarna requires a UK address for billing and performs a soft credit assessment
- Fees: Klarna does not impose interest on Pay Later/Pay in 3 transactions; standard exchange rate applies
- Limits: Usually £30–£1,500 per transaction (subject to Klarna's credit decision)
Note: Using Klarna to purchase USDC for prediction market participation should be approached as a standard financial commitment — only spend what you're prepared to repay if your prediction doesn't succeed.
Method 3 — Coinbase UK Bank Transfer (Lowest Fees)
For UK-based traders moving substantial sums, this route delivers the most competitive pricing:
- Set up a Coinbase UK account (FCA-authorised) — registration takes roughly 10 minutes with Yoti ID verification
- Connect your UK bank account via Open Banking or Faster Payments
- Purchase USDC using GBP — cost ~1.49% through Coinbase Advanced, ~0.5% via Coinbase Pro
- Transfer USDC to Polygon network (verify you're selecting Polygon/MATIC, not Ethereum)
- Add the wallet address to PolyGram or integrate via MetaMask
Total fees: ~0.5–1.5% based on your Coinbase account tier. Speed: 10–30 minutes. Best for: deposits exceeding £200.
Method 4 — Kraken UK Bank Transfer
Kraken holds FCA authorisation and is widely used among UK cryptocurrency enthusiasts:
- UK Faster Payments bank transfer — no deposit charge, typically credited within 2 hours
- Purchase USDC (Maker fee: 0.16%, Taker: 0.26%)
- Withdraw to Polygon network — negligible network fee (~$0.01)
- Best for: users already holding Kraken accounts, substantial deposits (£1,000+)
Method 5 — Revolut to PolyGram
Revolut enables cryptocurrency purchasing across the UK and attracts many prediction market participants:
- Purchase USDC through Revolut — published exchange rate plus 0.5–2.5% Revolut markup
- Transfer to your PolyGram Polygon wallet address
- Note: Revolut UK crypto operates on a custodial model — confirm you're transferring from Revolut to an external 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 banking institutions impose restrictions on debit/credit card transactions involving cryptocurrency. Current landscape (June 2026):
- Allow: Monzo, Starling, Chase UK, Halifax (general purposes), Lloyds, Barclays debit
- Restrict or block: HSBC (credit cards only), Santander (inconsistent), NatWest (partial restrictions)
- Workaround: Switch to a bank transfer approach if your card issuer restricts crypto transactions
Withdrawing Back to GBP (UK Bank)
To cash out your trading profits back to a UK bank account:
- Transfer USDC from PolyGram to your USDC wallet
- Move funds to Coinbase UK or Kraken
- Exchange USDC for GBP
- Withdraw GBP using Faster Payments — typically lands same day (under 2 hours)
Complete withdrawal duration: 30 minutes to 2 hours. Associated costs: ~0.5% exchange plus £0 bank transfer fee.
FAQ — Polymarket Deposit UK
- Can I deposit with PayPal on Polymarket UK?
- Direct PayPal deposits aren't supported. PayPal UK doesn't permit transfers to cryptocurrency services. Your option is to move funds from PayPal to your bank account first, then employ a bank transfer method to acquire USDC.
- Is Klarna safe for buying USDC?
- Klarna operates under FCA regulation as a licensed payment provider. Your purchase carries the same safety profile as any standard Klarna transaction. Only commit funds you're confident you can repay within your agreed repayment schedule irrespective of your trading results.
- What is the maximum I can deposit?
- PolyGram card deposits are constrained by your card provider's limits (usually £500–£1,000 per transaction). For bigger deposits, opt for a crypto exchange bank transfer — Coinbase and Kraken both facilitate deposits of £50,000+ once Enhanced Verification is completed.