Pronóstico: Fed Decision in September?

Platform comparison

Market context

The Federal Reserve is widely expected to hold its benchmark rate steady in September 2026, with market participants pricing in only a 4% chance of any cut. On Polymarket, this contract currently trades at 4% for the "YES" outcome, reflecting a consensus that the upper bound of the target federal funds range will remain unchanged versus its pre-meeting level. The on-chain mechanics use USDC on Polygon, where conditional tokens resolve based on the basis-point change in the upper bound, rounded up to the nearest 25 if the actual move falls outside the displayed options.

Historically, similar low-probability cut scenarios have preceded periods of policy inertia. In March 2026, traders saw just a 17.2% chance of a quarter-point cut, which ultimately did not materialise, as the Fed maintained rates within the 3.5%-3.75% range following three reductions in 2025 [2][4]. The current 4% probability aligns with this pattern of caution, where the Fed adopts an observational stance despite inflation cooling, as seen in the dot plot suggesting a single cut later in 2026 [4].

Traders should monitor the CME FedWatch tool for shifts in implied probabilities, particularly ahead of the July 29 FOMC meeting, which may set the tone for September [1]. Key catalysts include the upcoming employment data releases and inflation reports, as well as any changes in the Fed’s dot plot projections. Recent commentary from Goldman Sachs suggests cuts are unlikely until 2027, reinforcing the current market view of a flat path [6]. Any deviation in these schedules or unexpected economic data could alter the settlement probability before the 16 September window closes.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Pronóstico: 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

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

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 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.