A Tithe Calculator That Leaves the Number to You.
Ten percent is where the number starts, though what you land on is between you and God. Nothing here commits you to anything. It is a picture of what your giving could come to week by week, month by month and year by year, and of the work it could do in God’s kingdom.
Gross or net? Read the guide →
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Where ten percent comes from
The tithe in the Old Testament was a system of land and temple offerings tied to a covenant and a temple that no longer stand. Scholars count either two or three separate tithes in it, which together came to well above ten percent. The New Testament never repeats the command.
What it gives instead is a posture.
“Each one should give what he has decided in his heart to give, not reluctantly or under compulsion, for God loves a cheerful giver.”
2 Corinthians 9:7 (BSB)
So ten percent is a benchmark Christians have used for a long time, and it is a good place to start a conversation with God about your money. It is not a debt. No calculator knows your circumstances, and this one is not scoring you. The question behind the number gets a fuller answer in How much should I tithe?
Gross or net
Scripture does not settle this, because it never contemplates income tax. Anyone telling you the Bible is clear here is adding to it. The case for gross is first-fruits: you give off the top, before anything else has a claim. The case for net is that you cannot give what never reached you. Serious believers hold both.
Pick one, tell God why, and stop relitigating it every payday. The longer case for each is here.
Common questions
What percentage should I use?
Ten percent is the traditional figure, and it is where the slider starts. The New Testament sets no percentage and asks instead that you give deliberately and willingly, so treat it as a starting point rather than a requirement. The guide "How much should I tithe?" works through the question at length.
Should I tithe on gross or net income?
Scripture does not address income tax, so neither answer is more biblical than the other. Giving on gross follows the first-fruits principle of giving off the top. Giving on net reflects what actually reaches you. Choose one, and stay consistent rather than reopening it every month.
Do I tithe on a bonus or a tax refund?
A bonus is income, so the same principle applies. A refund is different: it is money you already earned and had withheld, so if you give on gross income you have already given on it.
Is tithing required for Christians?
The New Testament contains no command to tithe. It calls for generosity, and it warns specifically against giving reluctantly or under compulsion. Many Christians use ten percent as a practical structure for that generosity rather than as a rule they are obeying.
Can I give time instead of money?
Some Christians give time in seasons when money is short. Some give both. Scripture measures giving against what you have, so hours are a real offering rather than a consolation prize. Kingdom Cents has a time mode that logs hours instead of dollars, and your history and goals carry over when you switch back.
What if I cannot afford to tithe right now?
Then give what you can. In Mark 12 a widow put in two small coins, and Jesus said she gave more than all the wealthy givers around her, because giving is measured against what you have rather than against a percentage. If money is not what you have this season, Kingdom Cents can log hours instead of dollars. A season of giving less is not a season of failing.