Fed rate decision: bitcoin moves wider than a year ago, but less on the day

Traders go into the Fed rate decision on Wednesday at 18:00 UTC with a better than 87% chance on the first rate rise since July 2023, CNBC reports. Bitcoin swings harder this year than last. On Fed days it has been swinging less.

“With the market priced this way, it would be shocking if he came in and did nothing. It would really damage his credibility because it would basically be all talk, no action.”

— Bill Dudley, CNBC interview, 14 September 2026

Bill Dudley, former president of the New York Fed, in a CNBC interview on 14 September 2026

What is on the table

The target range stands at 3.50–3.75%. The last change was a cut on 11 December 2025, and the committee has sat still for nine months since. July's meeting ended 9–3 for a hold, with the regional presidents Lorie Logan, Beth Hammack and Neel Kashkari all voting to raise, so four more votes have to turn for a hike to pass. The committee also publishes a fresh dot plot on Wednesday, one of four such meetings a year.

August consumer prices ran 3.40% above a year earlier against core inflation of 2.45%, and unemployment sits at 4.1%. Governor Christopher Waller leaned towards a hold on 3 September and the hike odds fell to 48.4% within hours. Traders put them back after last week's inflation print. Goldman Sachs economist David Mericle wrote that his team sees no strong economic case for raising the funds rate, then moved the bank's call to a hike anyway, reasoning that pricing this firm forces the committee's hand.

Fed rate decision: where the pricing sits

Polymarket's contract on the decision carries $167m of volume and prices the quarter-point rise at 87.5%, leaving 12.5% on no change. The CME's FedWatch gauge reads above 92% and puts another rise in December above 75%. Buyers of three-month Treasury bills accept 3.93%, above the current 3.75% ceiling, so they have already taken the hike as done.

More or less than last year

The effective fed funds rate was 4.33% on 16 September 2025 and reads 3.63% today. A year ago the Fed opened a cutting cycle and delivered three cuts by December, and on Wednesday it turns the other way.

Bitcoin swings harder than it did then. Thirty-day realised volatility runs at 47.1% annualised against 30.1% a year ago, a little over one and a half times. The reaction to the Fed shrank over the same period. Across the eight 2025 meetings the median range in the two hours around the decision was 2.26%, and across the five meetings of 2026 it was 2.00%. The average absolute move over the whole decision day fell from 1.44% to 1.26%.

Wednesday still has no precedent behind it. The last hike landed on 26 July 2023, before American spot funds existed, and bitcoin moved 1.06% in the two hours after it and closed at $29,578. Those funds now hold 1,265,389 BTC, near $100bn, and no Fed tightening has ever passed through them.

The three outcomes

• A hike with a neutral message. Traders have paid for this one, so the rate itself should do little. The move comes from the dot plot and the size of the dissent.
• A hike with hawkish dots. A projection showing another rise in December, against 75% already priced, reaches further into 2027 than the vote does.
• No change. The whole surprise sits in that 12.5%. It buys relief on the rate and costs Warsh some of the credibility Dudley described.

Traders carry less than they did a week ago. Open interest on Binance perpetuals holds 104,392 BTC, funding pays 0.0067%, and the futures basis still asks twice the risk-free rate to stay long. American spot funds lost $303m across five sessions before taking $160m back on Monday. Bitcoin trades at $76,910 after a full round trip in a day.

A shrinking average is not a promise. The August CPI landed on forecast to the decimal on 11 September and bitcoin ran 5% in two hours. Keep position sizes to what a 2% hour would leave intact.

Nothing here is investment advice. Decide for yourself, and size accordingly.