Money Fed increases key interest rate by 0.75 points again. How will it affect the economy and you? July 27, 2022July 27, 2022 Paul Davidson and Maureen Groppe, USA TODAY Comments Off on Fed increases key interest rate by 0.75 points again. How will it affect the economy and you? The Federal Reserve increased its key interest rate by 0.75 percentage point for a second straight month to battle inflation that's at a 40-year high.