A vendor offers you an early payment discount. You will get a 2% discount if you pay the balance within 10 days. Otherwise, the full balance is due in 30 days. What is the effective interest rate earned on this discount?

% <-- Enter Discount Percentage
<-- Enter Discount Period
% <-- Enter Full term in Days

A vendor offers you an early payment discount. You will get a 2% discount if you pay the balance within 10 days.
Otherwise, the full balance is due in 30 days. What is the effective interest rate earned on this discount?

This is stated as 2/10 net 30
Effective Interest Rate on the Discount Formula is below:
Discount %
100 - Discount %
x
360
Balance Due Days - Discount Period Days

2%
100 - 2%
x
360
30 - 10

2%
98%
x
360
20%

Effective rate of interest = 0.306 x 18
Effective rate of interest = 0.51 or 36.73%