Fed Decision in October?

Platform comparison

Market context

The October FOMC decision will turn on whether the Federal Reserve lifts the upper bound of the target range from its current 3.50%–3.75% setting, with this market resolving to the size of any increase in 25-basis-point steps. On Polymarket, the crowd currently puts only a 1% chance on any October move, while Kalshi, Betfair and Smarkets may quote the same event differently through decimal prices rather than a direct implied probability, and their economics also diverge because exchange-style fees and KYC access vary by platform and jurisdiction. Polymarket’s own odds page has recently shown the market leaning strongly towards no change rather than a hike, which is consistent with the low 1% price here.[6][13]

Historically, traders have treated Fed meeting markets as a read-through on inflation and labour data rather than a pure calendar bet, and the comparable contracts have moved sharply when incoming prints changed the path for 2026. Reuters reported in June that short-term rate markets were pricing around a 60% chance of a hike by the October meeting, but more recent commentary and pricing have pulled that back, showing how quickly expectations can reset when growth or price data soften or strengthen.[4][19] For a platform-comparison lens, that matters because a one-per-cent Polymarket quote often corresponds to a very short decimal price on Betfair or Smarkets after fees, whereas Kalshi’s display is more directly tied to probability and contract price.

The main catalysts are the remaining inflation and labour releases before the 27–28 October FOMC meeting, plus any shift in Fed rhetoric as officials move closer to the blackout period. The Federal Reserve’s calendar confirms the October meeting date, and the outcome will be judged against the previous target range rather than an absolute level, with any non-standard move rounded up to the nearest 25 basis points under the market rules.[7][15] Traders should also watch whether futures pricing stabilises around no change or rebuilds some hike probability after each data release, because the market has already shown it can swing materially from one payrolls or CPI report to the next.[1][4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read Fed Decision in October? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Kalshi Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.