Do You Tithe on a Bonus or Tax Refund? A Biblical Guide

The deposit hits your account and your stomach does a little flip. Maybe it is a year end bonus you have been hoping for. Maybe it is a fat commission month, a tax refund, a birthday check from a generous aunt, or a few hundred dollars from a side gig. The money is real, it is more than you usually see, and almost immediately a quiet question surfaces if you are someone who gives. Do I tithe on this? And if so, on the whole thing or on what is left after taxes? It is one of the most common giving questions sincere Christians ask, and most of the time nobody ever gave them a clear, honest answer.

“Every man according as he purposeth in his heart, so let him give; not grudgingly, or of necessity: for God loveth a cheerful giver.”

2 Corinthians 9:7 (KJV)

Here is the short version, and then we will earn it. Not all surprise money is the same. A bonus is genuinely new income, so the first fruits principle naturally invites you to give from it. A tax refund usually is not new income at all. It is your own money coming back after you overpaid the government during the year, which changes the answer completely. Gifts, inheritance, and side income each have their own honest shape. And running underneath all of it is the New Testament's insistence that giving be cheerful, decided, and free, never a guilty formula applied in a panic every time your balance jumps. Let us walk through it carefully, with the Scripture and the real math side by side.

The one question that sorts almost everything

Before we get to bonuses or refunds specifically, there is a single question that does most of the work. Is this genuinely new increase, or is it money that was already mine? The Bible's giving language, both the tithe and first fruits, is built around the idea of increase. It assumes something grew. The harvest came in, the flock multiplied, the work produced a gain. You give from the new, not from a reshuffling of what you already had and already accounted for.

That distinction matters enormously for irregular money, because some of what surprises you is true increase and some of it only looks like it. A bonus is new. Commission is new. Profit from a side hustle is new. But a tax refund is not new at all. It is a chunk of your own paycheck that the government held onto and is now returning. Moving five thousand dollars from your savings to your checking account is not income, and neither, in most cases, is a refund. So the first move with any windfall is not to reach for a calculator. It is to ask honestly, did I actually gain something here, or is this money simply finding its way back to me?

Once you can answer that, most of the confusion clears. The rest of this guide is really just applying that one question carefully to the specific kinds of money that land in real life, and then putting honest numbers on each so you can see what your choice means in dollars. We will start with the biblical principles, then take the cases one at a time.

What first fruits asks of any real increase

The clearest biblical guide for new money is the principle of first fruits. Proverbs 3:9 states it plainly.

Honor the Lord with your wealth, with the firstfruits of all your crops; then your barns will be filled to overflowing. (Proverbs 3:9-10)

Notice the shape of the instruction. The firstfruits of all your crops. The first portion, given off the top, before the rest of the harvest was spent or stored. The farmer did not wait until the end of the season to see what was left and then give from the remainder. He gave from the first of what came in, as it came in. That is the heart of first fruits. It is a posture of giving first, not last, and giving from increase as the increase arrives.

Apply that to a bonus and the application is direct. A bonus is a small harvest, an increase your work produced. The first fruits instinct is to give from it off the top, before it slides into the general flow of your spending and quietly disappears into a vacation, a gadget, or simply a higher checking balance you stop noticing. This is precisely why giving on irregular money is so easy to skip. Regular income often has automatic giving attached to it. Surprise income arrives with no plan, gets absorbed fast, and the moment to give from the first of it passes before you decide. First fruits says decide before that happens.

There is also the tithe itself, and the famous promise attached to it in Malachi 3:10.

Bring the whole tithe into the storehouse, that there may be food in My house. Test Me in this, says the Lord Almighty, and see if I will not throw open the floodgates of heaven. (Malachi 3:10)

This verse is precious and also widely misused, so handle it with care. God invites His people to trust Him by giving, and He promises to provide. What He does not promise is that giving is a money making scheme, a deposit that returns a financial profit. That is the prosperity distortion, and it is not in the text. The floodgates God opens are His provision and presence, not a guaranteed bigger paycheck. Faithful, generous Christians still face layoffs, medical bills, and hard years. Malachi calls us to trust God as our provider, not to treat Him as an investment that pays cash dividends. Hold the promise as comfort, never as a transaction.

The bonus: real income, real withholding

Let us get concrete with the most common case, the work bonus. A bonus is unambiguously new income. You earned it, your employer reported it, and it is part of what your labor produced this year. For most Christians who tithe, giving on a bonus is the natural application of first fruits. The only real questions are how much arrives and whether you give on the gross figure or the net deposit.

Here is the part that catches people off guard. The bonus you were promised and the bonus that lands in your account are two different numbers. The IRS classifies a bonus as supplemental wages, and employers very commonly withhold federal income tax on it at a flat 22 percent rate rather than at your normal paycheck rate. On top of that come Social Security and Medicare at 7.65 percent, plus any state income tax. So a 5,000 dollar bonus does not deposit as 5,000 dollars. After 22 percent federal withholding and 7.65 percent payroll tax, before any state tax, you typically see around 3,500 dollars hit your account.

That gap shapes the giving decision in a familiar way. It is the same gross versus net question you face on a regular paycheck, just concentrated into one lump. If you give on the gross bonus, a tithe on 5,000 dollars is 500 dollars, given from the first and best of the full increase your work produced, including the part withheld for taxes. If you give on the net deposit of roughly 3,500 dollars, the tithe is about 350 dollars. Both are faithful. Giving on gross is the more generous choice and fits the off the top spirit of first fruits, since the withheld tax was still genuinely part of what you earned. Giving on net is reasonable and common, especially if money is tight, since the deposit is the amount you actually steward.

One honest caution about withholding. Because 22 percent may be more or less than your actual tax rate on that money, your bonus withholding can be trued up at tax time. If too much was withheld, part of it comes back to you in your refund the following spring, which is exactly the kind of returning money we will untangle next. The cleanest approach is to decide your giving on the bonus when you receive it, on either the gross or net figure you choose, and then not feel obligated to give again on the same dollars when some of them circle back as a refund.

The tax refund: usually your own money returning

Now the case that trips up the most sincere givers, the tax refund. A big refund feels like a windfall. The deposit is real, it is often substantial, and it arrives as a pleasant surprise. But a refund is almost never new income. It is a return of money you already earned and already had withheld from your paychecks throughout the year. You essentially gave the government an interest free loan, and the refund is them paying it back. The IRS itself frames a large refund as a sign you may be over withholding and could adjust your paychecks instead.

This changes the giving math completely, and the deciding factor is what you already gave on during the year. Walk through the logic. If you tithe on your gross income, then every paycheck you already gave on the full amount you earned, including the portion withheld for taxes. The refund is simply some of that already counted money coming back. To tithe on it again would be giving twice on the very same dollars. You have already honored God with the first fruits of that money once. There is no obligation, and arguably no logic, to do it a second time.

If instead you tithe on your net take home pay, the picture flips. In that case the money withheld for taxes was never part of what you gave on. It came out before your tithe base was figured. So when some of it returns as a refund, it is genuinely money you have not yet given from, and giving on the refund makes good sense. It is not double giving. It is finally giving on income that slipped past your net based tithe the first time. For a net based giver, a refund is a natural and tidy occasion to catch up.

So the honest answer to should I tithe on my refund is another question. What did you already give on? Gross givers can receive a refund with a clear conscience and no second tithe, because the money was already covered. Net givers can treat the refund as new ground and give from it freely. Either way, the goal is consistency, not anxiety. You are not trying to give on the same dollar twice to feel safe, and you are not trying to dodge income you never gave on. You are simply matching your giving to your actual increase, once.

Gifts, inheritance, side income, and small windfalls

Irregular money comes in more flavors than bonuses and refunds, so let us handle the rest honestly, each through the same lens of genuine increase.

Side income and self employment are clearly new increase, and the giving logic mirrors any other earnings. Most who tithe give on the profit, the real gain after the genuine costs of producing it, taken off the top. If your weekend business brings in 1,000 dollars but you spent 300 dollars on supplies and fees to earn it, your true increase is the 700 dollar profit, and that is the natural base. Remember too that side income often has no tax withheld at all, so set aside money for taxes before you decide your giving, and give from your real profit rather than the full revenue that passed through your hands.

Gifts and inheritance are different, because they are increase you did not earn. Scripture gives no command to tithe on a personal gift, and there is genuine freedom here. Many Christians joyfully give a portion of a meaningful gift or inheritance as a way of honoring God with an unexpected blessing, treating it as first fruits of money that simply arrived. Others receive a modest gift purely as a gift and give nothing additional, with a clear conscience. Both can be faithful. With a large inheritance especially, many believers prayerfully give a generous portion not out of obligation but out of gratitude, recognizing that an unearned blessing is a fitting thing to share. Let conscience and joy lead, not guilt.

Small windfalls, the twenty dollar rebate, the found cash, the minor refund from a returned purchase, rarely need a formal calculation. Use common sense and a generous instinct rather than a spreadsheet. The principle is consistency of heart, not precision to the penny on trivial amounts. If a small surprise moves you to give a little, wonderful. If it is genuinely just your own money returning, you are free.

What the New Testament protects you from

If you have read this far doing mental arithmetic, pause, because the New Testament will not let giving become a math contest. When Paul instructs the churches on generosity, he reaches for the heart, not a formula. The center of it is 2 Corinthians 9:7.

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)

Read what is missing. There is no percentage, no audit, no rule about bonuses or refunds. The instruction is about posture. Give what you have decided, freely and gladly, without being squeezed. This is exactly the protection a person needs when irregular money arrives and a wave of obligation rises with it. The question is never how do I avoid technically owing God on this surprise. The question is what would it look like to honor Him cheerfully from this increase. Those are very different spirits, and only one of them is in the text.

This is also why Christians can differ in good faith on whether the tithe is a strict ten percent for believers today. Some hold ten percent as a faithful baseline and apply it to every increase, including bonuses. Others see the New Testament moving from a fixed tithe toward proportional, Spirit led generosity that may be more or less than a tenth depending on the gift and the season. Both read their Bibles seriously. This guide does not need to settle that debate, and you do not need to win it to give well. What both views share is the off the top, cheerful, trusting heart that Scripture actually cares about. Hold your own conviction with peace, and extend grace to those who land elsewhere.

Paul gives the rhythm in 1 Corinthians 16:2. On the first day of every week, each one should set aside a sum in keeping with their income. In keeping with income. Proportional, regular, off the top. Irregular money does not break that rhythm. It just gives you an irregular occasion to apply the same proportional, off the top heart to a one time increase.

Build one simple rule and stop relitigating it

The deepest practical problem with giving on irregular money is not the math. It is the decision fatigue. If every bonus, refund, and gift forces a fresh agonized calculation, two things happen. You either skip the giving because deciding is exhausting, or you give in a fog of guilt that drains the joy Scripture wants you to feel. The solution is to decide once, in advance, with a clear head, and then simply follow your own rule when money arrives.

A workable rule has just three parts. First, name what counts as increase. Bonuses, commission, side income profit, and unearned gifts are increase. A tax refund is increase only if you give on net rather than gross. Second, pick your base and percentage and write it down. For example, ten percent of any genuine increase, given on the gross amount before taxes, or net, whichever you have decided. Third, give it off the top, quickly, before the money gets absorbed. The faster you act, the more it functions as first fruits rather than a leftover you scrape together later.

The point of the rule is freedom. Once it is set, a bonus is no longer a theological emergency. You see the deposit, you apply your rule, you give cheerfully, and you move on. You are not re-deciding your convictions at the worst possible moment, when the money is already in hand and a dozen other uses are calling for it. A consistent, joyful rule is worth far more than a perfect one applied erratically. God is not grading your formula. He is forming a generous, trusting heart in you, and a steady habit does that better than a brilliant one time calculation ever could.

The heart behind the surprise

Step back and remember what all this giving is for. God does not need your bonus. He owns everything already, and the church is not kept afloat by your refund. Giving exists for the giver. It is the practical way you keep money from quietly becoming a rival god, especially the surprise money that so easily attaches itself to your sense of security or your appetite for more. A windfall is a moment of testing precisely because it tightens its grip fast. Giving from the first of it loosens that grip while it is still loose enough to loosen.

So when the deposit lands and your stomach flips, let the flip become a prayer instead of a panic. Ask the simple question. Is this genuine increase, or is it my own money returning? If it is increase, give from the first of it, gladly and off the top, on the base you decided in advance. If it is mostly your own money coming back, receive it with thanks and a clear conscience. Either way, you are not trying to satisfy an auditor. You are honoring the God who gave you the ability to earn, the work that produced the bonus, and the grace behind every unexpected gift. Get the heart right and the math takes care of itself. A cheerful, consistent giver, surprised by money and quick to honor God with the first of it, is exactly the kind of steward Scripture is trying to grow.