Federal Tax Calculation for T4A Element

Summary:

I have created an element that is a duplicate of an element that we currently use in Production. The only difference is that the new element I created reports to T4A instead of T4. When testing the new element, the Federal Tax Withheld does not seem to be the correct amount based on federal tax guidelines.

Content (please ensure you mask any confidential information):

The only difference between the elements is the Reporting type. This new element reports to T4A and our previous element reported to T4. The original element is calculating correctly based on Canadian federal tax rules. The original element had a Secondary Classification "T4 Regular No EI No CPP". Therefore, no EI or CPP are deducted when using this element, but federal taxes are still withheld. This new element has the Secondary Classification set up as "T4A Regular No EI No CPP". I'm wondering why there is a discrepancy in the way the federal tax is calculated. Should the T4A