Basic Time Deposit Interest Computation


Unlike Savings Deposit, Time Deposit yields more interest than the former. Time Deposit is an interest bearing deposit account that has  specified maturity date. Can I withdraw my Time Deposit even not yet matured? The answer is YES but a penalty will be imposed on interest earned.
 
So how banks compute the interest rate of your Time Deposit.

Formula:

                  I = P x r x t

where             I = Interest earn
                       P = Principal
                       r = rate of the deposit
                       t = time/period divided by year or 365 days


Lets say, the bank says your money will earn 3% interest for placement period of 60days. Then you placed P 100,000.00 for that.

                      I =  P x r x t
                      I = P 100,000.00 x 3% x 60days / 365 days
                      I = P 3,000 x 60days/365days
                      I = P 493.15  --- Gross Interest Income, a 20% Withholding Tax will be deducted from it.
                      I = P 394.52 --- Net Interest Income 

This formula also applies for Savings Deposit. There are instances that banks offer ZERO interest on Time Deposit if your placement period is above 5 years.