How annualized wages are calculated

This topic summarizes how Annualized wages are calculated.

The short answer to this question is – it's complicated. The long answer depends on whether there is more than a year's worth of Payroll Statistics records in the system.

If the Client has more than a year's worth of wages in the Payroll Statistics table, the Annualized wages are simply the sum of the Gross Payroll amounts from Payroll Statistics.
However, if the client has less than a year in Statistics, then annualized gross pay is calculated like this:
AnnualGrossPayroll = (360.00/DATEDIFF(d,FirstStatStart,MostRecentStatEnd))* ISNULL(PeriodGrossPayroll,0)
Roughly translated Annual gross pay = (360.0/ number of days between the first pay period start and most recent period end) * SUM(Gross payroll on statistics)
360/difference gives you what percentage daily of the year for which payroll has been submitted.
Multiplying this by the sum of the actual wages gives an estimated total of what wages should be at the end of the year.
The 30/360 method is a commonly accepted practice used in calculations that divide the year into periods, such as mortgage amortization schedules because it rounds more cleanly.
It works as well as 365 when estimating possible payroll and leaves less chance for trailing decimals