Polymarket Klarna UK: Payment Methods, Fees & Processing Times

Polymarket deposits and withdrawals — UK guide

Polymarket deposits run exclusively in USDC on Polygon. PolyGram mirrors that structure 1:1. For UK users that means three practical paths: (1) buy USDC on an exchange like Kraken or Coinbase and withdraw to Polygon, (2) direct fiat on-ramp via a card processor that delivers Polygon USDC, or (3) Klarna / Faster-Payments-adjacent rails where enabled in your region.

Typical times and costs

Exchange-to-Polygon transfers: 2-10 minutes, exchange-withdrawal fee between £0.50 and £2. Fiat card on-ramp: instant confirmation, 2-3.5% processor fee. Withdrawals back out: on-chain in 60-120 seconds, Polygon gas in pence. No PolyGram-side deposit or withdrawal fee.

Faster Payments and Klarna — UK status

Direct GBP rails with USDC conversion are in region-by-region rollout. Klarna Pay Later is live as a card on-ramp in supported regions. Availability depends on your KYC status, region, and the currently active rails. The deposit panel in-app shows you what’s live right now.

HMRC considerations

Prediction-market gains in the UK are most commonly treated as capital gains or miscellaneous income, depending on whether your trading activity looks investment-like or trading-like. Keep clean records of every deposit, every trade, and every withdrawal. This isn’t tax advice — consult an accountant for material volumes.