Should you tithe on gross or net income?

Ask “gross or net?” in any church small group and the room splits. Both camps quote Scripture, both are sincere, and both are a little suspicious of the other’s math. Here’s an honest look at what the Bible actually says — and doesn’t say.

What Scripture actually gives us

The Bible never mentions payroll withholding, because nothing like a modern paycheck existed when it was written. An Israelite farmer’s “income” was a harvest, and the command was clear about position, not percentage points of an adjusted figure: “Honor the LORD with your wealth, with the firstfruits of all your crops” (Proverbs 3:9).

Firstfruits meant the first and best of the harvest — brought to God before the household consumed anything, before expenses, before anyone knew for certain how good the rest of the harvest would be. It was an act of trust as much as an act of giving.

That’s the principle underneath the gross-vs-net debate: does God get the first of your increase, or the leftovers?

The case for gross

Gross-tithers reason from firstfruits directly: taxes are simply one of the things your income pays for — like rent or groceries — so giving “before taxes” is giving first in the truest sense. Your gross pay is the actual measure of your increase; the government’s share is spent on your behalf (roads, schools, defense), but it’s still your earnings being spent.

The case for net

Net-tithers reason from reality of receipt: you never controlled the withheld money, so your real increase is what lands in your account. Many also point out that tax systems already redistribute part of income, and that a percentage of take-home pay is what an ancient farmer’s “harvest after the field’s costs” most closely resembles. Giving 10% of net joyfully beats giving 10% of gross resentfully.

What the New Testament adds

The New Testament never repeals generosity — it deepens and frees it. “Each of you should give what you have decided in your heart to give, not reluctantly or under compulsion, for God loves a cheerful giver” (2 Corinthians 9:7). The emphasis moves from formula to heart posture: decided, purposeful, cheerful.

That cuts both ways. It frees you from legalistic precision about which line of your pay stub is “biblical.” And it removes the excuse of using the smaller number to give as little as possible — that’s precisely the reluctant spirit Paul warns against.

A practical way to decide

1. Run both numbers. Use our tithing calculator with your gross and your net. Look at the real dollar difference per month.
2. Ask the direction question. Which number represents the giver you want to become — not just the budget you can defend today?
3. Start where you can give consistently and joyfully. Many Christians begin on net because it’s visible on every paycheck, and move toward gross as faith and finances grow. The direction of travel matters more than the starting line.
4. Decide once, then automate. A standing decision (“10% of net, first Sunday of the month, automatic”) protects giving from mood and month. Revisit annually, not per paycheck.

The question behind the question

If you find yourself optimizing for the smallest defensible tithe, the real issue usually isn’t math — it’s trust or margin. If money is genuinely tight, see our guide on biblical budgeting: generosity grows best on ordered finances. And remember the widow’s two coins (Mark 12:41–44): Jesus measured the gift by what it cost her, not by its arithmetic.