Creating payroll system

I have created a payroll system using Microsoft access 2003. I just want to ask on how do I automatically compute the SSS contribution, withholding tax automatically when I select the field ?SSS used bracket to know the contribution same thing with withholding tax.

Project Description: This program is supposed to calculate the monthly salaries for two different types of employees: Part-time and Full-time. The full-time employees

I'm not really a total beginner. I have put together several systems, but usually after purchasing items from a local dealer. This time I purchased everything through New Egg and their support is somewhat questionable. My question deals with the MB and chip. They are separate and I will install...

How to make a payroll system in excel so that it is very easy to compute rather than making a payroll manually...