Tithe on gross or net income? The math, both ways.
Faithful Christians have reached different conclusions on this for generations. The disagreement isn't about whether to give — it's about how to define "income" for giving purposes. This guide presents both positions honestly, with the arithmetic for three common household situations: W-2 employee, self-employed, and retired.
The two positions
The question divides along how you read the concept of "firstfruits" and what counts as "yours to give."
The gross (firstfruits) position
The most common argument for tithing on gross income comes from Proverbs 3:9: "Honor the Lord with your wealth, with the firstfruits of all your crops."1 The firstfruits logic is that giving comes first — before taxes, before retirement contributions, before anything else is set aside. Taxes, in this view, don't remove you from the obligation; they're just the government's share of what God gave you. Crown Financial Ministries and the majority of evangelical church teaching in the United States have historically taken this position.
The net (take-home) position
The net position holds that you can only give from what you actually receive. Taxes are an obligation imposed on your income before you ever touch it — they were never your money to deploy. Tithing, under this view, applies to the income you're free to use: your take-home pay after withholding. Some teachers note that in biblical agricultural contexts, the "increase" being tithed was the net produce remaining after the costs of farming — a net, not a gross, concept.
Both are practiced by serious givers
This is not a dividing line between generous and stingy households. Christians who tithe on net often give more than 10% of net — which exceeds 10% of gross at high enough percentages. The question is about principle, not a ceiling on giving. This guide takes no position on which is right. We present arithmetic, not religious guidance; convictions belong to you and your church.
What the difference actually costs: three scenarios
The difference between gross and net tithing ranges from modest to significant depending on your tax situation. Here are three households.
Scenario 1: W-2 employee household, $85,000 gross income
A married couple, one income, two children. After federal income tax, state income tax (assuming a moderate-tax state), and FICA payroll taxes, typical take-home for this household is roughly $63,000–$66,000. Let's use $64,500 as a working estimate.
| Basis | 10% / year | 10% / month | 10% / paycheck (bi-weekly) |
|---|---|---|---|
| Gross ($85,000) | $8,500 | $708 | $327 |
| Net ($64,500) | $6,450 | $538 | $248 |
| Difference | $2,050 / yr | $170 / mo | $79 / paycheck |
At $85K, tithing on gross rather than net costs about $170 more per month. That's meaningful — roughly a car payment — but not budget-breaking for a household at this income. The right question to ask is whether that $170 comes from discretionary spending, retirement savings, or somewhere else. Our giving-capacity calculator shows exactly where it comes from in your household's budget.
Scenario 2: Self-employed household, $120,000 gross business revenue
Self-employed households face an additional question before the gross/net debate even starts: which gross? You have three candidates:
- Gross revenue — what clients paid you before any business expenses ($120,000)
- Net profit (Schedule C income) — after legitimate business expenses; this is what the IRS calls your self-employment income ($120,000 minus expenses; say $85,000 after a home office, equipment, and professional fees)
- Take-home after taxes — after self-employment tax (15.3% on the first $176,100 of net profit in 20262) plus federal and state income taxes; roughly $60,000–$65,000 depending on deductions
| Basis | 10% / year | Notes |
|---|---|---|
| Gross revenue ($120,000) | $12,000 | Before business costs or taxes |
| Net profit / SE income ($85,000) | $8,500 | Most common business-owner definition of "gross" for giving |
| Take-home after all taxes (~$62,000) | $6,200 | Strictest net interpretation |
Most financially-disciplined self-employed givers use net profit (Schedule C income) as their "gross" baseline, treating business expenses the way a farmer treats the cost of seed — a real cost that reduces the increase available to give from. This is a reasonable middle position, but it's a decision you should make explicitly and consistently, not drift into.
Scenario 3: Retired household, Social Security + IRA distributions
Retirement income introduces new complexity. A couple receiving $38,000 in Social Security benefits and taking $34,000 in IRA distributions (required minimum distributions beginning at age 733) has $72,000 in total distributions but a more complicated "income" question:
- Social Security: You paid into this with post-tax contributions (your side of FICA) for decades. Many households treat SS as already "tithed on" during earning years and give only on the net after-tax SS amount received — which, depending on provisional income, may be 0%–85% taxable.
- IRA / 401(k) distributions: Traditional IRA/401(k) money was saved pre-tax — you deferred the tithe decision during working years. Many teachers argue the tithe is properly paid when you receive the distribution, on the gross amount drawn. Others note you'll pay income tax on the distribution and count that before calculating the tithe.
| Approach | Annual tithe at 10% |
|---|---|
| Give on all gross distributions ($72,000) | $7,200 / yr |
| Give on RMD only; SS counted as already-tithed ($34,000) | $3,400 / yr |
| Give on after-tax distributions (estimate $56,000 net) | $5,600 / yr |
The spread here is over $3,800 per year. For a retired household on a fixed income, this is a real planning question — which is exactly why it belongs in a conversation with a faith-aligned financial advisor, not just a calculator.
Complicating factors most guides skip
Pre-tax retirement contributions
If you contribute 10% to a 401(k), your "net" (take-home) is significantly lower than it would be from taxes alone. Gross givers argue this doesn't reduce the tithe base — the 401(k) money is still yours, just deferred. Net givers who define net as "what hits your checking account" may be giving on a base that already excludes meaningful income. There's no single right answer; the key is making a deliberate choice rather than defaulting to whichever definition reduces the number.
Bonuses, stock vesting, and irregular income
Households with significant variable compensation — year-end bonuses, RSU vests, commissions — sometimes give on base salary continuously and then make a separate decision about windfall income. Some give 10% on the net bonus received; others give on the pre-tax value. If your income is variable, a tithing calculator helps you see the dollar spread across scenarios before you receive the money.
Inherited money and asset sales
Most traditions don't apply the tithe to return-of-basis situations (selling a house you bought for $300K for $400K — the gain is income, but the basis isn't). The distinction between capital gain (income) and return of principal (not income) applies here. A donor-advised fund is particularly efficient for giving on appreciated assets — see our DAF tax-savings calculator for the math.
What actually makes generosity sustainable
The gross-vs-net question matters, but most households that struggle with giving don't struggle because they chose the wrong base — they struggle because giving isn't in the plan. The commitments that last are the ones built into the budget from the first dollar, automated per paycheck, and reviewed when income changes.
- Decide the base explicitly. Gross, net, or something in between — pick one and write it down. Households that define "income" clearly give more consistently than those who decide month to month.
- Automate at the paycheck level. The tithing calculator shows your per-paycheck amount; set up an automatic transfer on payday so the decision is made once, not twelve times a year.
- Plan the tax side as income grows. At modest incomes, the tithe/standard-deduction interaction is straightforward. At higher incomes — or in retirement — qualified charitable distributions, donor-advised funds, and charitable remainder trusts can significantly change what your giving costs you without affecting what ministries receive.
If you're at the point where the tax planning around generosity is worth optimizing, that's a conversation for a fee-only advisor who serves faithful families. They do this routinely and can model the exact after-tax cost of your giving commitment across different scenarios.
Common questions
Does my church teach gross or net?
Evangelical Protestant churches generally teach gross (firstfruits). Many Catholic teachers use net after taxes. If your church has an official position, that's the right place to start; if it doesn't, you get to decide.
If I can't afford 10% of gross right now, should I give less?
Many households start at a lower percentage and grow toward 10% (or beyond) as debt is paid and income rises. The giving-capacity calculator helps you see what's actually sustainable alongside your other obligations. Giving at a rate that requires skipping rent or carrying high-interest debt isn't what generosity is designed to produce.
What if my spouse and I disagree?
This is more common than people admit. The framework that tends to work: agree on a household number (a dollar amount or percentage) that both spouses can commit to, rather than debating the theological base. A faith-aligned financial planner can facilitate this conversation in the context of a full plan — where giving, savings, and lifestyle all fit together.
Should we tithe on investment returns?
Most traditions treat investment income (dividends, capital gains distributions) the same as other income — you give on what you receive. Unrealized appreciation in a brokerage account is typically not tithed until realized; the gain isn't income until you sell. When you do sell appreciated positions, giving the stock directly to a DAF before selling eliminates capital gains taxes and increases the impact of your gift.
Sources
- Proverbs 3:9 (NIV) — BibleGateway — "Honor the Lord with your wealth, with the firstfruits of all your crops." The primary scriptural basis for the gross (firstfruits) tithing position. First-fruits giving logic: give before taxes or other deductions.
- IRS: Self-Employment Tax (Social Security and Medicare) — FICA for self-employed is 15.3% on net earnings up to the Social Security wage base ($176,100 for 2026) plus 2.9% Medicare on all earnings above; deduct half of SE tax from gross income. Used in Scenario 2 tax estimates.
- IRS: Retirement Topics — Required Minimum Distributions (RMDs) — RMD age is 73 for individuals born 1951–1959 and 75 for individuals born 1960 or later, per SECURE 2.0 Act § 107. Used in Scenario 3 context.
- FaithFi (formerly Crown Financial Ministries) — Resources — Faith-based personal finance education with extensive teaching on tithing, stewardship, and generosity. Crown historically teaches tithing on gross income as the firstfruits principle.
- Kingdom Advisors — Stewardship planning resources — The professional community for Christian financial advisors; Certified Kingdom Advisor® (CKA®) program resources on faith-integrated financial planning, including generosity and giving planning.
Tax estimates current as of June 2026. Social Security wage base ($176,100) and RMD age thresholds reflect current IRS guidance. This page presents arithmetic illustrations only and does not constitute financial, tax, or religious advice.
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