Tithe calculator — and the gap you're deciding about.
Enter your income the way you're actually paid. You'll get the figure per paycheck, month and year at any percentage — and, if you want it, the honest difference between that and what you give today.
What does giving actually work out to?
Enter your income the way you're paid. Nothing is stored or sent anywhere — the maths happens in your browser.
Use gross or take-home — see the note below on which.
What you already give, per the same period.
Ten percent is the traditional tithe. Move it to whatever you're actually deciding about.
The question under the question
Gross or net? The honest answer, and why it matters less than you think
This is the first thing everyone asks, and the reason it's hard to answer is that the New Testament doesn't have a category for withheld tax. Israel's tithe was agricultural — a tenth of the flock, the grain, the oil — taken off the top of what came in, before anything else happened to it. There was no payroll department. Anyone telling you Scripture settles the gross-versus-net question is reading a modern payslip back into a passage about livestock.
The arguments on both sides are reasonable. Gross-first: the principle in Proverbs 3:9 is to honour God with the firstfruits, and firstfruits by definition come before deductions. Net-first: you never actually receive the withheld portion, and much of it funds things a tithe was partly meant to fund — care for the poor, public infrastructure, provision for those who can't work.
Here's the practical resolution most people land on, and it's the one this calculator is built for. Pick one, decide it once, and be consistent — because the real spiritual risk is not choosing the wrong base. It's spending years relitigating the definition as a way of never actually deciding a number. Set the slider, look at what it means per paycheck, and start there.
What the calculator does
Three numbers most people never work out
Everything runs in your browser. No income figure is transmitted, logged, or stored anywhere.
Per paycheck, not per year
An annual figure is easy to admire and impossible to act on. The number that changes behaviour is what it means on the 15th — so the calculator works from how you're actually paid, including twice-monthly and every-two-weeks, which aren't the same thing.
Any percentage, not just ten
The slider runs from 1% to 30%. If you're building up from two percent, or you've been at ten for a decade and are considering twelve, the tool answers the question you actually have rather than the one it assumes you have.
The gap you're deciding about
Enter what you currently give and it shows the difference — per paycheck and per year — plus the percentage you're already at. That gap is the number nobody calculates for themselves, and it's the one the decision actually turns on.
The harder question
Is the tithe binding on Christians?
It's worth being straight about this rather than assuming. The tithe is Old Testament law, given to Israel under a covenant that included a temple, a priesthood, and a land — and the New Testament never repeats the ten percent command to the church. When Paul writes his most sustained passage on giving, in 2 Corinthians 8 and 9, he names no figure at all. What he says instead is that each person should give as they've decided in their heart, not grudgingly or under compulsion, because God loves a cheerful giver.
That cuts in two directions, and honest teaching should admit both. It means nobody can tell you that ten percent is a debt you owe or that falling short of it puts you outside God's favour — that's exactly the compulsion Paul rules out. It also means the New Testament standard is not lower than the tithe but less defined, which for most people is harder rather than easier. Jesus commends a widow who gave two small coins over wealthy people giving far more, and the measure he uses is not the size of the gift but the size of what was left.
So what's ten percent for? Most Christians who use it find it valuable as a starting discipline rather than a ceiling or a tax — a concrete figure that turns a vague intention into a line in a budget, in a culture where generosity otherwise stays perpetually theoretical. If it helps you begin, it's doing its job. If it's become a number you hit to stop thinking about money, it isn't.
Money decisions are rarely only about money.
Talk through what's actually behind this one — fear, generosity, debt, a marriage conversation. It stays private; create an account to keep going.
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Questions people ask
About the tithe calculator
How do I calculate my tithe?+
Multiply your income by 0.10 — but the useful version is per pay period rather than per year, because that's the figure you'll actually act on. Enter your income the way you're paid above and the calculator does it, including the distinction between twice-monthly (24 periods) and every two weeks (26), which produce different numbers.
Should I tithe on gross or net income?+
Scripture doesn't settle it, because Israel's tithe was agricultural and there was no withheld tax to argue about. Gross has the stronger firstfruits argument; net has the stronger "you never received it" argument. Pick one, decide it once, and stay consistent — the real risk is relitigating the definition instead of choosing a number.
Do Christians have to tithe 10%?+
The New Testament never repeats the ten percent command to the church. Paul's fullest teaching on giving, in 2 Corinthians 8–9, names no figure and rules out compulsion entirely: each person gives as they've decided, not grudgingly. Ten percent is best understood as a useful starting discipline rather than a debt — a way of making a vague intention into a concrete line in a budget.
Should I tithe on a bonus, tax refund, or gift?+
Most people who tithe treat any income they didn't previously have as income, which would include bonuses, gifts, and self-employment payments. A tax refund is the debatable one: if you already gave on the gross amount, you've arguably given on it once already. If you gave on net, the refund is money you've now actually received.
Should I tithe if I'm in debt?+
There's no single right answer and the honest ones are pastoral rather than mathematical. Many people continue giving something — even a small percentage — because stopping entirely tends to become permanent. Others pause while clearing high-interest debt so they can give sustainably afterwards. What's worth avoiding is giving amounts that force you into more debt, which helps nobody.
Is my income stored by this calculator?+
No. Every calculation runs in your browser. Nothing you type is sent to a server, logged, or saved, and closing the tab discards it. That's deliberate — income is not something a website needs to know.
The number is the easy part.
Create an account to think through the decision behind it — and pray about the part of your finances you've been managing alone.
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