One would think tithing could certainly affect that metric
Right?
I did one couple's taxes - their AGI exceeded mine (long story about how they got me to do their taxes)... They brought in all their registrations for all their toys - boats, ATV's, etc.
OK - let's add this up... vehicle taxes... state income taxes... mortgage interest... property taxes... "What about charitable giving?"
"Well, we both gave the United Way $100 at work."
"Anything else?"
"No."