Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi UK) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
99% | 1% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| No change | 99% |
| 50+ bps increase | 1% |
| 50+ bps decrease | 0% |
| 25 bps decrease | 0% |
| 25 bps increase | 0% |
Market context
The Bank of Japan will release its July 2026 Monetary Policy Statement on 31 July, determining the basis-point change to the upper bound of its short-term policy rate. On Polymarket, this contract currently trades at 0% for a rate increase, implying the crowd expects no change despite the central bank’s recent tightening trajectory. Traders settling positions in USDC on Polygon via conditional tokens are effectively betting that underlying CPI inflation and accommodative financial conditions will not force another hike before the settlement window closes.
Historically, the BOJ has moved in 25-basis-point increments during its normalization phase, with the most recent 25bp hike to 1.0% occurring in June 2026 after a split 7–1 vote [1][3]. A government panel member recently advocated for two further moderate hikes at a pace of once every six months, suggesting a rate rise by year-end and another around summer 2027 [2]. However, the current 0% probability reflects market caution that the BOJ may pause after the June move to assess economic activity, as the bank explicitly stated it will adjust accommodation “in response to developments” rather than following a fixed schedule [1].
Key catalysts include the BOJ’s Outlook Report for Economic Activity and Prices, released alongside the policy statement, and any shifts in underlying core inflation relative to the 2% target [1][5]. Traders should monitor the July 29–30 meeting schedule confirmed by the BOJ calendar, as well as energy cost trends and yen volatility, which previously drove the June hike [5][10]. A dissenting vote or explicit language on pausing in the policy minutes would likely reinforce the current pricing, whereas renewed upside inflation risks could trigger a rapid repricing toward a 25bp increase bracket.
Methodology
We track Bank of Japan Decision in July? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
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