Calculate monthly qualifying income for the following self-employed borrower based on the Schedule C information provided:
												2016				2017
	Gross Revenue		$23,141		Gross Revenue		$20,899
		Depreciation expense	$1,225			Depreciation expense	$1,110
		All other expenses	$4,236			All other expenses	$3,777
	Net Income		$17,680		Net Income		$16,012

In addition to the Schedule B totals from the tax returns what additional documentation would be required in order to utilize interest income to qualify?