Where to extract tax information regarding a payslip

Hi

I am in process of developing a report that required various views to be built in order for the main code to pull certain data points into the Termination Letter.

One of the views I need to build is around taxes calculated on the last paycheck of the employee. My problem is where are these values of the generated taxes stored?? What are the tables involved ? If the payslip shows a tax of R 2000 was deducted on the last payslip, where would this information be stored or how would I go about writing the code to obtain this information?