July Inflation US - Annual

Platform comparison

Market context

Polymarket is pricing this US CPI print at **2% YES**, which is a very low-implied chance that the BLS will report a year-on-year inflation rate high enough to settle the contract in the money. On Polygon, the market is backed by USDC and resolves through conditional tokens against the Bureau of Labor Statistics’ July 2026 CPI release, so the key question is not the abstract inflation trend but the exact published year-on-year figure for the 12 months ending July 2026.

The most useful comparison is the recent run-up in headline CPI: inflation accelerated to 4.2% for the year to May 2026, then cooled to 3.5% in June after a sharp monthly drop, according to BLS and Reuters coverage. That leaves this market far below the latest realised prints, but still dependent on whether price softness persists into July or whether a rebound in energy, shelter or services pushes the annual rate back up. In other words, the 2% price implies the crowd sees a far lower July outcome than recent data alone would suggest.

Traders should watch the BLS release calendar closely, because the market settles on the official July 2026 CPI report due on 12 August at 8:30 am ET. The main catalyst is the monthly CPI path between now and then, especially any signs from energy markets, transport costs, or tariff pass-through that can alter the year-on-year comparison. If the report is delayed or affected by a federal shutdown, comparable prediction markets have clauses extending expiry until the data is released, which is operationally important for anyone holding conditional tokens into the settlement window.

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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 PolyGram. 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 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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.