
Originally Posted by
mazingerZ
In your case, I believe floating or prevailing market rate ang pinili mo na interest for your time deposit.
In your first mointh, you were given an interest rate of 2.25% (computed as follows: P150/(1-20% w/tax) = P187.50 gross interest earned in a month. P187.50 x 360 days in a year divided by 30 day term = P2,250. P2,250 / P100,000 principal gives you a per annum interest rate of 2.25% for that particular month).
Now its you second month, how much was your interest rate? Definitely lower. Lets compute:
P133.54/(1-20% w/tax) = P166.925 gross interest earned
P166.925 x 360 days divided by 30 days = P2,003.10
P2,003.10/P100,150 = gives you 2.00 %(rounded off figure)
Hence,
your interest rate for month 1 was 2.25% and on month 2 was only 2.00%. All on a per annum basis.
Better ask your bank if pwede na ipafix mo na lang interest rate mo.