Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| ↑ $4,200 | 100% |
| ↑ $4,100 | 100% |
| ↑ $4,300 | 86% |
| ↑ $4,400 | 57% |
| ↑ $4,500 | 29% |
| ↓ $4,000 | 29% |
| ↑ $4,600 | 16% |
| ↓ $3,900 | 14% |
| ↓ $3,800 | 7% |
| ↑ $4,700 | 5% |
| ↓ $3,700 | 2% |
| ↓ $3,600 | 2% |
| ↓ $3,500 | 2% |
| ↓ $3,400 | 1% |
Market context
Gold is trading in the low-4,000s and recent short-term calls have clustered around a range rather than a clean trend, with one technical view placing XAU/USD around $4,033–$4,085 and another allowing for a broader August band near $4,020–$4,338.[9][17] That matters for this market because the settlement question is not whether gold is broadly firm, but whether it reaches a specific August 2026 level; with the crowd-implied YES probability at 5%, the market is pricing a low chance that spot extends far enough above the current zone before month-end.[9][17]
Historical and comparable forecasts point in different directions, which is typical when gold is near a pivot. Some models are cautious, with one weekly view calling the bias moderately negative and mapping resistance at 4,172 before a move towards 4,244, while another forecast expects August to average about $4,270 with a top near $4,422.[1][2] Broader 2026 outlooks remain much higher, including JPMorgan’s call for an average of $6,000/oz by 4Q26, but that is a quarterly macro view rather than a guide to what prints during August itself.[14] In practice, prediction-market pricing usually stays low when spot is range-bound and the next technical level is still several percentage points away.[1][9]
Traders should watch US macro releases, especially labour and ISM data, because recent commentary tied gold’s near-term direction to the ISM Manufacturing PMI and Non-Farm Payrolls, with $4,112 identified as a short-term breakout level.[8] Gold also remains sensitive to the Federal Reserve path, and intraday moves in BTC and ETH can matter if a broader risk-on or risk-off shift changes dollar demand and margin appetite across markets; that spillover is most relevant when spot funding and positioning in crypto are stretched, because cross-asset flows can amplify late-month volatility.
Methodology
This page reads What will Gold (XAUUSD) hit in August 2026? on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
UK Frequently Asked Questions
- What are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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