Rent Splitter
By income, by room, evenly, or somewhere in between — with the fairness shown.
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What the household pays
Housemates
Enter each person's take-home pay for the same period — the figures are only compared to each other, so gross or net works as long as everyone uses the same one.
At 0% everyone pays the same. At 100% shares are fully proportional to income. Most households that argue about this settle somewhere in between, which is what the middle of this dial is for.
per month across 2 people
What each person pays
| Person | Income | Share | vs. even | % of income |
|---|---|---|---|---|
| Person 1 | — | $0.00 | — | — |
| Person 2 | — | $0.00 | — | — |
Shares add to the total exactly. Where a division leaves an odd cent, it goes to whoever has the largest fractional share rather than being rounded away.
No incomes entered yet, so this is currently an even split. Fill in a number for each person to weight it.
Nothing here is stored or sent anywhere — incomes in particular never leave this page. Close the tab and the figures are gone.
Your file never leaves your browser during processing
How it works
To split rent by income, enter the total rent and bills along with each housemate’s monthly income — this page apportions the cost between them and shows each share as a percentage of that person’s income, which is usually the number the decision actually turns on.
Rent, utilities, and anything else the household pays are added together, then divided by whichever rule you choose. An even split ignores that one housemate may earn twice what another does. A strictly proportional one has its own problems: it means a pay rise costs you rent, and it can have the highest earner subsidising a room they do not sleep in. Most households that argue about this end up somewhere between the two, so there is a dial for exactly that rather than a choice of two absolutes.
The blend is computed once rather than averaged from two results. Each person’s weight is a mixture of an equal share and a proportional one — at 0% everyone pays the same, at 100% shares track income exactly, and every setting in between is a single consistent apportionment. Averaging two already-rounded splits would produce shares that do not add up to the rent, which is the sort of small error that undermines the whole conversation.
The percent-of-income column is the readout worth looking at. An even split of a $3,000 flat can be 18% of one salary and 41% of another, and seeing those two numbers side by side settles arguments that comparing the two rent shares does not. Use the same basis for everyone — all take-home pay, or all gross — since the figures are only ever compared with each other.
Room size works the same way and is the fairer basis in a flat where the rooms genuinely differ. Any consistent measure will do: square metres, square feet, or a number everyone agrees describes the room. Incomes are never sent anywhere or stored; they exist in this page only, and are gone when you close the tab.
FAQ
How do you split rent based on income?
Add up the household’s total housing cost, then divide it between people in proportion to their incomes. This page does that, and also shows what each share works out to as a percentage of that person’s income so you can see whether the result is actually even-handed.
Is splitting rent by income fair?
It equalises the burden rather than the amount, which many households prefer and others find unfair because it ties rent to a salary rather than to what you get for it. There is no single right answer, which is why this page also offers an even split, a room-size split, and a dial between them.
How should rent be split when the bedrooms are different sizes?
Split by room size and enter any consistent measure for each room. A common compromise is to split shared space evenly and private space by size, which the dial approximates: move it partway rather than all the way to proportional.
Should I use gross or take-home income?
Either, as long as everyone uses the same one. The figures are only compared to each other, so the choice does not change the shares much — though take-home pay is closer to what people can actually spend.
Are my income figures saved anywhere?
No. Everything is calculated in your browser, nothing is uploaded, and there is no account or history. Closing the tab discards it.