4-4-5 calendar

A 4-4-5 calendar is a type of processing schedule that lets you calculate depreciation on a weekly basis and post the depreciation every four or five weeks. The posted period depreciation is calculated with this formula.

Posted depreciation = Annual depreciation amounts / Total # of depreciation periods for fiscal year * # of depreciation periods for the calendar period

To ensure accurate depreciation calculation for a depreciation posting schedule that uses a 4-4-5 calendar, define the associated book with an Actual Days (AD) convention.