Fed Decision in September?

Platform comparison

Market context

The Federal Reserve’s September 2026 meeting is the real-world event behind this contract, and the key question is whether the FOMC changes the upper bound of the target funds range from 3.50% to 3.75% or leaves it unchanged. The market currently implies only a 1% chance of a move, which is far below recent sportsbook-style pricing and exchange-implied odds seen elsewhere; by late July, CME-linked pricing and market commentary were still assigning meaningful odds to a 25 bp hike, while Polymarket showed “No change” as the leading outcome and “25 bps increase” close behind.[2][7][9][20]

That spread matters because the recent policy path has been mixed: the Fed left rates unchanged at its July 2026 meeting, but officials also signalled a more hawkish debate, with some commentary pointing to a growing constituency for a hike later in the year.[2][6][18] The September meeting is scheduled for 15–16 September, with the decision due on 16 September alongside the Summary of Economic Projections and dot plot, so traders will be watching not just the statement but the inflation and labour-market data released before that date.[4][8][10]

For read-throughs, the closest historical comparison is a late-cycle pause where the Committee keeps optionality open but does not move immediately, especially if inflation stays sticky above target and payrolls remain firm.[2][7][11] Analyst views are not aligned: some desks and media coverage have framed September as a live hike decision, while others still expect no change through year-end, so the contract’s 1% YES looks much lower than the broader consensus range implied by futures, commentary, and exchange markets.[3][9][18]

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

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.

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.