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 converting GBP into USDC (Polymarket's primary settlement asset) and transferring it to a Polygon-based wallet. This comprehensive guide walks through every UK Polymarket deposit method in 2026, detailing associated costs, processing times, and which option suits different deposit sizes.
Method 1 — PolyGram Debit Card (Fastest)
How it works: PolyGram accepts Visa and Mastercard debit cards as a direct payment route. Your sterling is instantly swapped for USDC and credited to your PolyGram account in real time.
- Speed: 2–5 minutes
- Minimum: £5
- Fees: ~1.5% card processing fee (baked into the quoted exchange rate)
- Best for: smaller deposits under £200, urgent top-ups
- Limits: Your card issuer's transaction ceiling applies (£500–£1,000 per transaction with most UK banks)
Method 2 — PolyGram via Klarna (Buy Now, Flexible Payment)
PolyGram integrates Klarna as a checkout option for UK-based customers:
- Klarna Pay Later (30 days): Acquire USDC today, settle your bill within 30 days — zero interest charged
- Klarna Pay in 3: Divide your purchase into 3 equal portions spread across 60 days
- Availability: Klarna requires a UK address on file and performs a soft credit inquiry
- Fees: Klarna levies no interest on either Pay Later or Pay in 3 products; standard conversion rates apply
- Limits: Usually £30–£1,500 per transaction (subject to Klarna's credit assessment)
Note: USDC purchases through Klarna for prediction markets should be approached like any other financial commitment — only spend what you're prepared to lose if your market position expires worthless.
Method 3 — Coinbase UK Bank Transfer (Lowest Fees)
For UK customers moving substantial sums, this pathway delivers the most competitive pricing:
- Set up a Coinbase UK account (FCA-authorised) — registration takes roughly 10 minutes using Yoti ID check
- Attach your UK bank via Open Banking or Faster Payments rail
- Purchase USDC with sterling — cost runs ~1.49% on Coinbase Advanced, ~0.5% on Coinbase Pro
- Transfer USDC to the Polygon chain (verify you're selecting Polygon/MATIC, not Ethereum mainnet)
- Connect the receiving wallet to PolyGram or use MetaMask as an intermediary
Total fees: ~0.5–1.5% based on your Coinbase tier. Speed: 10–30 minutes. Best for: deposits exceeding £200.
Method 4 — Kraken UK Bank Transfer
Kraken holds FCA authorisation and commands a strong user base among UK crypto traders:
- UK Faster Payments transfer — zero deposit cost, settlement within 2 hours
- Exchange sterling for USDC (Maker rate: 0.16%, Taker rate: 0.26%)
- Move funds to Polygon network — negligible withdrawal fee (~$0.01)
- Best for: those already using Kraken, substantial transactions (£1,000+)
Method 5 — Revolut to PolyGram
Revolut permits UK customers to purchase cryptocurrency and has gained traction among prediction market participants:
- Purchase USDC via Revolut — baseline rate plus 0.5–2.5% Revolut surcharge
- Route to your PolyGram Polygon wallet address
- Note: Revolut UK crypto holdings are custodian-managed — confirm you're sending from Revolut to a self-custodied 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 financial institutions impose restrictions on debit and credit card transactions involving cryptocurrency. Current landscape (June 2026):
- Allow: Monzo, Starling, Chase UK, Halifax (most scenarios), Lloyds, Barclays debit
- Restrict or block: HSBC (credit products only), Santander (inconsistent policy), NatWest (selective restrictions)
- Workaround: Switch to bank transfer if your institution declines card-based crypto buys
Withdrawing Back to GBP (UK Bank)
To move trading profits back to your UK bank account:
- Send USDC from PolyGram to your external USDC wallet
- Transfer to Coinbase UK or Kraken
- Convert USDC to sterling
- Initiate GBP withdrawal via Faster Payments — typically lands within 2 hours
Complete withdrawal window: 30 minutes to 2 hours. Costs: ~0.5% conversion spread plus £0 bank fee.
FAQ — Polymarket Deposit UK
- Can I deposit with PayPal on Polymarket UK?
- Direct PayPal funding is unavailable. PayPal UK prohibits transfers to crypto services. Your alternative is moving funds from PayPal to your bank account first, then purchasing USDC via a bank transfer method.
- Is Klarna safe for buying USDC?
- Klarna operates as an FCA-supervised payment provider. Your transaction carries the same security as any standard Klarna arrangement. Spend only what you can comfortably repay within the agreed timeframe independent of market performance.
- What is the maximum I can deposit?
- PolyGram card deposits cap at your card issuer's limit (generally £500–£1,000 per go). For bigger sums, opt for a bank transfer through a crypto exchange — Coinbase and Kraken both accommodate deposits of £50,000+ once Enhanced Verification is complete.