You need to run quarter end processing prior to processing for the next quarter, but there is no month end processing. So if you have a pay period end date of 12/30/2014 and a paydate of 1/7/15, you would need to perform quarter/year end processing first and then you can process payroll in 2015. Before running quarter/year end, I generally copy the company to a backup as all reporting would need to be done before you can close a quarter/year so often times we process the reports from the copy company.