The May Consumer Price Index report arrives Wednesday morning with economists watching closely for signs that inflation is cooling. This monthly snapshot of price changes across the economy shapes Federal Reserve decisions on interest rates, which ripple through everything from mortgage costs to savings account yields.

Economists expect headline inflation, which includes volatile food and energy prices, to show modest month-over-month gains. Core inflation, which strips out those swings, typically receives more attention from the Fed because it better reflects underlying price pressures. A reading that comes in hotter than expected could signal the Fed will maintain higher rates longer. A softer report might open the door to rate cuts later this year.

For savers, the stakes matter directly. Banks and credit unions set deposit rates partly based on Fed expectations. If the CPI report suggests inflation remains sticky, financial institutions will keep savings account yields elevated, benefiting anyone holding cash in high-yield savings accounts earning 4% to 5% annually. Conversely, a surprisingly strong inflation print might keep rates higher than markets currently price in.

Investors face similar exposure. Bond prices move inversely to rate expectations. Stock market performance often hinges on whether the Fed can tame inflation without triggering a recession. Tech stocks, already sensitive to rate changes, tend to react sharply to CPI surprises.

The specific numbers matter less than how they compare to economist forecasts. A report that matches expectations produces minimal market movement. Beats and misses drive trading activity and reset expectations for the Fed's July meeting.

Households already feeling inflation's pinch at the grocery store and gas pump should watch whether the trend line continues downward from earlier 2024 readings. The Fed has brought inflation down from 2022 peaks, but progress has stalled near 3%. Reaching the Fed's 2% target remains the challenge.

Wednesday's release sets the tone for rate expectations through summer. Check major financial