What price will Bitcoin hit on August 21?

Platform comparison

Market context

Bitcoin's price action on 21 August 2026 will be shaped by the liquidity conditions available to retail and institutional traders on that specific date. The current 13% implied probability reflects scepticism that Bitcoin will reach a particular threshold within a defined window, suggesting the market expects either consolidation or a modest move relative to the strike price. Settlement occurs the following day, meaning traders have a single calendar day to witness the target price touch the spot market on major exchanges.

Historical precedent shows that single-day Bitcoin price targets carry asymmetric risk. In comparable one-day windows, Bitcoin has moved 5–15% in either direction during periods of elevated volatility, though such moves typically require catalyst alignment. The 13% probability sits between a "tail event" and a "plausible but unlikely" outcome, consistent with markets pricing a move that would require either a significant macroeconomic announcement, regulatory shift, or on-chain activity spike. August historically sees lower trading volumes than Q4 months, which dampens the likelihood of extreme price discovery.

Traders should monitor Federal Reserve communications and inflation data releases scheduled for early August, as these shape risk appetite across crypto markets. Spot exchange inflows—measurable via blockchain analytics—often precede price rallies, particularly when payment rails like SEPA transfers or Klarna-enabled deposits show upticks in volume. Stablecoin reserves on major exchanges and Bitcoin futures open interest will signal whether institutional capital is positioning ahead of the settlement window. Any major regulatory announcement from the SEC or CFTC in the weeks prior would materially shift the probability.

Methodology

This page compares What price will Bitcoin hit on August 21? with a focus on payment rails and deposit friction. Polymarket accepts USDC on Polygon only; Kalshi only ACH/Plaid (US only); Betfair card/SEPA in EU/UK; Manifold no deposit. Polymarket Klarna UK additionally offers Klarna and SOFORT as fiat on-ramps to USDC. Live odds reflect the Polymarket order book.

Resolution & payout

Settlement path determines payout latency. Polymarket settles on-chain (USDC, minutes). Broker frontends like Polymarket Klarna UK add Klarna/SOFORT as fiat withdrawal options with T+1 processing. Kalshi: USD via ACH (T+1 to T+3). Betfair: local currency via card/SEPA (T+1 to T+5).

UK Frequently Asked Questions

Which payment methods are supported?

Klarna (Pay Now / Pay Later), SOFORT, SEPA bank transfer, credit card (Visa/Mastercard), Apple Pay, Google Pay, and direct USDC deposit on Polygon. Availability depends on your jurisdiction.

How fast is SEPA deposit?

SEPA Instant: under 10 seconds. SEPA Standard: 1-2 business days. Both accepted fee-free; the internal USDC conversion runs automatically once EUR lands in the platform account.

Can UK traders use Klarna to deposit on Polymarket?

Polymarket does not natively accept Klarna. To fund a Polymarket account from the UK, you must first purchase USDC via a crypto exchange (Coinbase UK, Kraken) or Revolut, then transfer to a Polygon-compatible wallet. Some third-party on-ramps (MoonPay, Transak) accept UK debit cards and may support Klarna buy-now-pay-later for crypto purchases.

What payment methods can UK users use for Polymarket?

UK traders typically use: (1) Coinbase UK or Kraken — buy USDC with GBP debit card or bank transfer; (2) Revolut — buy crypto and send to wallet; (3) MoonPay or Transak — Visa/Mastercard UK debit card directly to USDC on Polygon. Standard GBP-to-USDC conversion fees range from 0.5–2.5%.

How long do Polymarket withdrawals take for UK users?

Polymarket withdrawals to your Polygon wallet are instant (on-chain). Converting USDC back to GBP via Coinbase UK or Kraken typically takes 1–3 business days for bank transfer, or near-instant for Revolut. Polygon gas fees are minimal (<$0.01 per transaction).