3.75%。 Raising interest rates by 75 basis points means raising the original benchmark interest rate by 0.75%. According to the calculation of the root bureau calculator, 3% plus 0.75% equals 3.75%. In finance, it is a measure of interest rate changes of bonds and bills. One basis point is equal to 0.0 1 percentage point, that is, 0.0 1%, so 100 basis points is equal to 1%.