Countback Method

This table shows the calculation of DSO using the countback method:

March	10869 - 5538 = 5331	Accumulated DSO = 31
February	5331 - 4566 = 765	Accumulate DSO = 31 + 28 = 59
January	(765/7570) x 31 = 3.1
		DSO = 59 + 3.1 = 62.1