The Effective Annual Rate is the annual rate of interest actually paid or earned reflecting the impact of compounding frequency. 

Input Variables:

r- Interest Rate

m- Compounding Frequency

Output for Formula:

Returns the Effective Annual Rate (EAR)

Notes

EAR is also known as the true annual return.

Compounding Frequencies:

Annually means yearly

Semiannually means half a year or done twice a year

Quarterly means done at every quarter