[Federal Reserve December Interest Rate Prediction: 94% Probability of a 25 Basis Point Rate Cut] According to the latest forecast results from the polymarket website, the probabilities for the Federal Reserve's December interest rate decision are as follows: 94% probability of a 25 basis point rate cut, 6% probability of no change, <1% probability of a 50+ basis point rate cut, and <1% probability of a 25+ basis point rate hike.