Hi
Remove the amount specification as 1500 in the maximum with holding tax configuration and maintain the percentages in the below configuration path:
IMG>Financial Accounting (New)> Financial Accounting Global Settings> Extended With Holding Tax>With Holding Tax Code> Define Formulas for calculating with Holding Tax Codes.
Now maintain the formulae as under
Amount from Amount To Percentage
0 1500 4
1501 999999999 0
Regards
Sanil