The tables provide a single tax amount for a range of income amounts.

Sage uses the formula provided by Revenue Canada using the exact income amount.

I have always thought Sage to be more accurate unless you are using the long complex formula as well.

Thank you. That makes sense.

DO you happen to know where I can find the formulas?

There is a publication on the CRA website which provides all of the formulas. However, for most people these are too complex and lengthy to try to reproduce. That is why I depend on the programmers at Sage.

There is an issue with some changes that take place later in the year depending on salary level which Sage programmed one way and the CRA programmed a different way but the end result is correct for both when we get to the final pay processing. This minor discrepancy was drawn to Sage's attention and they have verified the results to be correct.