Guide
How to split rent in proportion to income
Splitting rent in proportion to income means each person pays the same share of the bill as they bring in of the household income. It takes two minutes to work out, and it works for any shared bill.
The formula
- Add both take-home incomes to get the household total.
- Divide each person's income by the total to get their share.
- Multiply each share by the bill.
A worked example
Jordan takes home $5,200 a month and Casey takes home $3,800. The household total is $9,000. Rent is $2,100.
| Jordan | Casey | |
|---|---|---|
| Take-home pay | $5,200 | $3,800 |
| Share of household income | 57.8% | 42.2% |
| Share of $2,100 rent | $1,213.33 | $886.67 |
| Rent as a share of own pay | 23.3% | 23.3% |
With an equal split, each would pay $1,050. That is about 20.2% of Jordan's pay and 27.6% of Casey's. Splitting in proportion to income puts rent at the same share of pay for both.
Use it for every shared bill, not only rent
Add utilities, internet, groceries and shared goals into one shared total, then split that total with the same percentages. Each of you makes one transfer a month instead of five. For a full plan built this way, see the zero-based budget example for couples.
Other ways to split
Equal, or 50/50
The simplest option, and a good one when incomes are close.
In proportion to income
Keeps the burden similar when incomes differ.
Equal leftover
Contributions are set so both of you have the same amount left after shared costs. It suits couples where one person carries more personal fixed costs, such as a loan payment.
None of these is correct for everyone. Pick the one you both feel good about, write it down, and revisit it when income changes.
Three people, or a changing income
The formula does not care how many people share the bill. With three roommates earning $3,000, $4,000 and $5,000, the total is $12,000, and the shares are 25%, 33.3% and 41.7%. A $2,400 rent would be $600, $800 and $1,000.
If one income varies, base the split on the amount you can count on, and settle any difference when the extra money arrives. Some couples recalculate every few months. Others set the split once a year and adjust only for big changes.
Talking about it without it getting awkward
Share the numbers, show the arithmetic, and ask whether the result feels fair. Proportional splits are easier to accept when both people can see how they were worked out. If either of you is uncomfortable, try another method for a month and compare.
Take-home or gross pay?
Use take-home pay, after taxes and deductions. It is the money each of you can actually spend, so the shares reflect real life.
Putting the split into a plan
A split is only useful once it lives in a budget you both look at. Read how to budget as a couple without merging finances for the full setup. In Allokate, you and a partner share a household free, and the pricing section shows what Pro adds.
Questions people ask
Is it fair to split rent by income?
Many couples find it fair because each person gives up a similar share of their pay. An equal split is also reasonable. What matters is that you both agree to it.
Should I use gross or net income?
Use net, or take-home, pay. That is the money each of you can actually spend, so the shares reflect it.
What if one partner is not earning for a while?
Agree on a temporary plan ahead of time, such as the working partner covering more for a set period, and pick a date to review it together.
Does the same formula work with roommates?
Yes. Divide each person's take-home pay by the total of everyone's, and multiply that share by the bill.
How often should we recalculate?
Whenever either income changes, and once a year even if nothing seems to have changed.
Try your first month together.
Set up yours, mine, and ours in about 10 minutes. Your partner joins free.