Since the IRS made changes to the federal taxes in January, anyone who still has the federal calculation filled out will have their taxes computed accordingly. If they want a change to their taxes, including additional withholding, you will need to fill out the W4. At which point, it doesn't matter what's on the federal item as the only thing the program will look at is the W4. Our program follows all the changes the IRS has for payroll.

Since the IRS made changes to the federal taxes in January, anyone who still has the federal calculation filled out will have their taxes computed accordingly. If they want a change to their taxes, including additional withholding, you will need to fill out the W4. At which point, it doesn't matter what's on the federal item as the only thing the program will look at is the W4. Our program follows all the changes the IRS has for payroll.