# Percentage of income amount

**URL:** <https://community.tiller.com/t/percentage-of-income-amount/6676>\
**Category:** Google Sheets\
**Tags:** google-sheets, how-to, tracking, advice\
**Created:** [December 29, 2020, 6:10am UTC](https://community.tiller.com/t/percentage-of-income-amount/6676 "2020-12-29T06:10:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![RafaelBrito](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tiller.com/rafaelbrito/32/5324_2.png) [@RafaelBrito](https://community.tiller.com/u/RafaelBrito)\
**Post date:** [December 29, 2020, 6:10am UTC](https://community.tiller.com/t/percentage-of-income-amount/6676/1 "2020-12-29T06:10:01Z")

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Hello, I’m new here. Loving it so far.

I’d like to know if there is a way where I can, from the categories page, set an amount based on the total income. To explain further, I have 7 income lines in my spreadsheet. I give 10% of my income away. I’d like for that 10% to be accounted for as a part of the budget so that it may be added to my budget.

Is this possible to set up?

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**Author:** ![jpfieber](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tiller.com/jpfieber/32/4791_2.png) [@jpfieber](https://community.tiller.com/u/jpfieber)\
**Post date:** [December 29, 2020, 3:47pm UTC](https://community.tiller.com/t/percentage-of-income-amount/6676/2 "2020-12-29T15:47:49Z")

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If I’m understanding you correctly, the way I’d do it is to first add your income to the budget via an income category. Then add a category for the money you want to give away (eg. ‘Charity’). Then, instead of typing in a number for the Charity budget amount, use a formula instead:

> =G5\*.1

In the example, cell G5 would be where you put the income for that month. So the formula is saying “display 10% of what’s in the cell G5”.