Fed Decision in September?

Platform comparison

Market context

The September FOMC meeting will decide whether the Federal Reserve changes the upper bound of the fed funds target range, with the contract settling on the size of that move in basis points. Current market pricing is split: the prediction-market contract is close to a coin toss between **no change** and a **25 bp hike**, while sportsbook-style pricing is broadly similar, with one recent snapshot showing about **65% hold, 34% hike, and 2% cut** on Kalshi-type ladders.[13][17]

That sits well below the more hawkish futures readings seen in late June and July, when CME FedWatch and Reuters reported roughly **80%+** odds of a September hike, before those expectations were pared back.[4][2] By contrast, some sell-side commentary now leans to a hold, with J.P. Morgan strategists and Reuters-linked market pricing pointing in different directions on whether September is the earliest plausible tightening step.[1][4] The result is a meaningful divergence between futures-based and prediction-market views, rather than a clean consensus.

For traders, the main catalysts are the Fed’s communications between now and the meeting, especially inflation prints, labour-market releases and any further shifts in energy prices, which have recently fed into the hike debate.[2] The Fed’s September 15–16 meeting is the key decision point, and the Federal Reserve’s published meeting calendar remains the anchor for timing.[16] A recent Reuters report framed the current debate around whether incoming data keep the hold case intact or revive the case for a 25 bp increase, which is the main bracket this market is likely to trade around.[4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Fed Decision in September? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi vs Polymarket 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.