APY Saving Calculator

The stated rate before compounding is taken into account.
The advertised yield. Used when solving for the nominal rate or for a balance.
The deposit the yield is applied to.
Regulation DD mode only: the interest actually paid over the period below.
Regulation DD mode only. 365 for a full year.
Balance at the end
12,461.82
APY Calculator
Annual percentage yield
4.500000 %
Nominal annual rate
4.409771 %
Rate per compounding period
0.36748094 %
Interest earned
2,461.82
Compounding periods a year
12
Worked out from 12 CFR Part 1030 (Regulation DD), Appendix A - Annual Percentage Yield Calculation and 1 other source.

How this is worked out

2 steps
  1. An APY of 4.5% is already an effective annual rate.
  2. Balance = 10000 x (1 + 0.045)^5 = 12461.82

Results are general information, not financial, tax, legal, medical or engineering advice.