You can use Quick Assignment at the end of the year to enter new payroll deduction rates for employees.  Cards – Payroll – Quick Assignment.  For example enter a new rate and start date of 1/1/2014 as below.  Change the Deduction amount for EPU from $15 to $20 with a starting date of 1/1/2014.

As soon as you click OK, the deduction card is changed for the employee as below.  There is no process like activating post dated pay rates.  The starting date on the deduction is changed and the amount is changed immediately.  So if you run payroll now with a build date earlier than the start date the deduction won’t come out. The immediate result of clicking OK on the above screen is below.

So, lets expand the scenario. For example, your payroll date range for the last payroll of the year is 12/18/2013 through 12/31/2013.  Your check date will be 1/6/2014.  You have new payroll deduction rates effective 1/1/2014.

If you do your payroll build with what you think is the proper date range none of your new deduction amounts will come out.

So what do you do?  Well first, you can not use Quick Assignment. Second, you could just wait until 12/31 and make all the deduction changes in each payroll card.  Or you can use Quick Assignment which is a lot easier when changing large amounts of data for each employee.  Just change the build date range to go from 12/18/2013 to 01/01/2014 as below.