# Should tax deductions be deducted from total maaser giving?

(1) Let's say your charitable contribution of \$100 resulted in a deduction of \$1 from your tax bill. Would your maaser contribution from that hundred be counted as \$99 total or \$100 total?

(2) Let's say your maaser above only counted as \$99--but you owe \$100 in maaser. How do you pay that, in light of the fact that the more maaser you pay, the lower your tax bill gets, and the higher your maaserable income? (see here)

(I'm more interested in whether this is addressed in halacha than whether it is mathematically or practically feasible, since I'm pretty sure it is both of those.)

Even more fun maaser and tax math here!

Does Ma'aser count if you have an ulterior motive?

Maaser Deductibles

• the answer to (2) is just a math problem. In your example with tax deduction of 1% of charitable donation, your equation is x -.01x = 100 ==> .99x = 100 ==> x = 101.0101010101... so you should pay \$101.01 (or 101.02 if you want to cover that additional .00010101010101....) Nov 29, 2015 at 3:09
• – SAH
Mar 6, 2018 at 22:14