Fed Decision in September?

Platform comparison

Market context

The September Federal Open Market Committee meeting will decide whether the upper bound of the federal funds target range is left unchanged, or moved in 25-basis-point steps. On the market-implied read, the contract is oddly split from broader rate pricing: Polymarket shows **No change** around 56% and a **25 bps increase** near 39%, while CME FedWatch has recently implied roughly an 80%-plus chance of a hike by the same September meeting. [11][1][2]

That gap matters because history shows these contracts can reprice quickly when the market shifts from “wait-and-see” to “one move is likely”. In late June, Reuters reported that futures were already leaning towards a September hike after an expected July hold, and that expectation has stayed elevated even as other desks have been more cautious. [2] By contrast, FactSet-cited consensus in recent reporting has still leaned towards no hike this year, so the current prediction-market price is sitting between a more hawkish futures market and a more restrained analyst view. [7][10]

For traders, the main catalysts are the two policy meetings before September, the August inflation and labour releases, and any fresh guidance from Fed officials on whether July’s decision was a pause or a longer hold. The Federal Reserve’s calendar confirms the September meeting is scheduled for 15–16 September 2026, so every data print between now and then feeds directly into this contract. [13] CNBC also reported that recent rate-odds swings have tracked oil prices and labour data, which means headline inflation, payrolls and any geopolitical shock that moves energy prices could still shift the implied probability materially before settlement. [7][3]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Best Prediction Markets UK. 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 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.

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.