Bank of Japan Decision in July?

Platform comparison

Market context

The Bank of Japan’s July 2026 Monetary Policy meeting will release its Statement on Monetary Policy on 31 July, determining any change in the upper bound of the short-term policy interest rate. As of today, Polymarket prices the “YES” outcome—any rate increase—at 0%, implying the crowd expects no change. On-chain, this USDC-settled contract on Polygon uses conditional tokens to resolve to the exact basis point shift, rounded up to the nearest 25bp bracket if the actual move falls outside listed options.

Historically, the BOJ has moved in 25bp increments during its normalization phase, with the most recent hike in June 2026 lifting rates from 0.75% to 1.00%—the highest since 1995 [3]. That decision was split 7–1, with dissent over pacing, yet the bank explicitly pledged further raises as underlying CPI inflation approached 2% [1]. A government panel member recently called for two more hikes at a six-month pace, suggesting a July move is plausible but not guaranteed [2]. The current 0% probability may reflect caution ahead of the meeting rather than a definitive “no hike” consensus.

Traders should monitor the BOJ’s Outlook Report for Economic Activity and Prices, released alongside the policy statement, and watch for shifts in underlying core inflation data ahead of 31 July [9]. The June 2026 meeting already flagged price concerns with inflation above target, and officials see scope for additional increases citing persistent upside risks [4]. Key dependencies include yen stability, energy cost trends, and real interest rate levels—all cited as drivers for further normalization [5]. Any surprise in the July Outlook could shift on-chain pricing before settlement.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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 Polymarket Scam?. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.