Sorry I can't help, but I'm curious. I know of the Zero Sum Budget, but I've never heard of a Zero Sum *DAILY* Sales Receipt. Curious how it is supposed to work with only one day's income?
The ZSB I know about uses the last Month's Income to pay for the current Month's Expenses. This allows for all those slow Monday/Tuesdays, days after holidays, etc. to somewhat balance out throughout the month. Just curious how the Daily version deals with a snowy Monday in February? (Or whatever slow month pending where you are.)