Fed Decision in September?

Platform comparison

Market context

Fed policy has just come through a meeting where rates were left unchanged, but pricing for September is still leaning towards a move rather than a long pause. CME-linked market gauges in late July showed the odds of a September hike rising sharply at one point to around 82%, while the current crowd here has only **1%** on a September decision under the event’s own framing, which is a much more conservative read than the futures market consensus.[1][4][9]

That gap matters because September FOMC calls often reprice quickly on incoming inflation and labour data, and comparable market episodes have shown how fast the balance can shift when traders reassess the policy path. Fed funds futures and FedWatch-style measures have repeatedly moved from hold-favoured to hike-favoured as oil, payrolls and core inflation data changed the outlook, with Reuters noting that expectations for September had been built around a higher policy rate than the current 3.50%–3.75% range.[1][4][5]

Over the next six weeks, the main catalysts are the August employment reports, CPI and PCE inflation prints, and any fresh Fed communication before the 15–16 September meeting, which is the key date for this market window.[16] If core inflation stays firm or labour data remains resilient, the probability of a 25 basis point move can rise quickly; if data softens, the market is more likely to drift back towards no change.[1][7][15]

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 Prediction Today, 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 Prediction Today. 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'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.

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.