The fairest common way to split rent when you earn different amounts is to split it by income: add up what you both take home, work out each person's percentage, and pay that percentage of the rent. If you take home $5,000 a month and your partner takes home $3,000, you pay 62.5% and they pay 37.5%. On a $2,000 apartment that is $1,250 and $750, and rent costs each of you the same 25% of your pay.
That is the short answer. The rest of this post walks through the main ways couples and roommates split rent, the math for each one, and the details that tend to cause arguments later.
Why a 50/50 split can feel unfair
An even split treats rent like a dinner bill: same apartment, same price. That works when incomes are close. When they are far apart, the same dollar amount takes a very different bite out of each paycheck.
Take the same $2,000 rent and the same incomes as above. Split evenly, each person pays $1,000. For the person taking home $5,000, rent is 20% of their pay. For the person taking home $3,000, it is a third. The lower earner has much less left for everything else, even though they live in the same place.
Some couples are fine with that, especially if the gap is small or temporary. If it starts to cause friction, splitting by income is the usual fix.
Method 1: split by income percentage
This is the most common alternative to 50/50. Here is how to do it.
- Write down each person's monthly take-home pay (after tax).
- Add them together to get the household total.
- Divide each person's pay by the total to get their percentage.
- Multiply the rent by each percentage.
Worked example
Say rent is $2,400. One of you takes home $6,000 a month and the other takes home $4,000.
- Household total: $6,000 + $4,000 = $10,000
- First person: $6,000 ÷ $10,000 = 60%
- Second person: $4,000 ÷ $10,000 = 40%
- First person pays 60% of $2,400 = $1,440
- Second person pays 40% of $2,400 = $960
Check it: $1,440 + $960 = $2,400. Each of you now spends 24% of your take-home pay on rent.
Take-home or gross pay?
Use take-home pay if you can. Two people with the same salary can take home different amounts because of taxes, health insurance or retirement contributions, and take-home is what actually pays the rent. Gross pay is simpler to compare and harder to argue about, so some couples use it anyway. Either works, as long as you both use the same one.
Method 2: equal money left over
Some couples who share most of their finances want each person to keep the same amount after shared costs. The math is different.
Using the example above:
- Household take-home: $10,000
- Minus rent: $10,000 − $2,400 = $7,600 left
- Each person should keep half: $3,800
- First person pays $6,000 − $3,800 = $2,200
- Second person pays $4,000 − $3,800 = $200
This method moves a lot of money toward the lower earner. It fits couples who already think of their income as shared. It usually does not fit roommates, or couples early on who keep their money separate.
Method 3: split by space
Roommates rarely split by income. They are more likely to split by what each person gets: the bigger bedroom, the private bathroom, the parking spot.
A simple way to do it: give each feature a share of the rent, then add them up. Say a two-bedroom costs $2,400. You agree the shared spaces (kitchen, living room) are worth 40% of the rent and the bedrooms 60%. One bedroom is noticeably bigger, so you split the bedroom portion 55/45.
- Shared space: 40% of $2,400 = $960, split evenly, so $480 each
- Bedrooms: 60% of $2,400 = $1,440
- Bigger room: 55% of $1,440 = $792
- Smaller room: 45% of $1,440 = $648
- Bigger room total: $480 + $792 = $1,272
- Smaller room total: $480 + $648 = $1,128
That adds up to $2,400. The exact percentages matter less than agreeing on them before anyone moves in.
What about everything else?
Rent is the biggest shared bill, but not the only one. You do not have to split every cost the same way.
One of us splits rent with a partner by income and splits everything else 50/50: groceries, household supplies, dinners out. It didn't take long to agree on. Rent is the large fixed number where the income gap matters most, and the smaller costs are easier to split evenly without anyone feeling squeezed.
Other couples apply the income percentage to all shared bills: rent, utilities, internet and groceries. That is fairer on paper, but it means doing a percentage on every grocery run. If one person buys most of the household things, it helps to log them in a shared expense app so the split happens without anyone keeping a spreadsheet.
Write it down and set a date to revisit
Incomes change. Someone gets a raise, changes jobs, goes back to school or takes parental leave. A split that felt fair last year can feel off now.
A few habits help:
- Write down the method and the percentages you agreed on, so it is not renegotiated every month.
- Pick a natural moment to revisit it, like lease renewal or a change in either person's pay.
- Round to whole dollars and agree who covers the extra cent or two.
- Decide what happens in a month where one person earns nothing, before it happens.
A quick way to compare the methods
Using $2,400 rent and take-home pay of $6,000 and $4,000:
- 50/50: $1,200 and $1,200 (20% and 30% of take-home)
- By income: $1,440 and $960 (24% each)
- Equal money left over: $2,200 and $200 (each keeps $3,800)
None of these is the right answer for everyone. 50/50 is simplest. Income percentage is the usual middle ground. Equal leftover suits couples who already treat their money as shared.
To try your own numbers, the free rent split calculator works out each person's share evenly, by income or by room size, and gives you a link to send your roommate or partner.
Keeping track of your real share
Once rent is split unevenly, the number on your bank statement often isn't your real cost. If one person pays the landlord the full $2,400 and the other sends their share back, the payer's account shows $2,400 going out and money coming in, which can make a budget look wrong in both directions. Many budget apps count the full payment as spending and the money coming back as income.
If you split rent through Splitwise, Monio uses your share as your rent, so your budget and your fixed costs reflect what the apartment actually costs you.
Questions
How do you split rent when you earn different amounts?
Split it by income: add up what you both take home, work out each person's percentage, and pay that percentage of the rent. If you take home $5,000 a month and your partner takes home $3,000, you pay 62.5% and they pay 37.5%, so a $2,000 rent is $1,250 and $750.
Should you split rent by take-home or gross pay?
Use take-home pay if you can, since it is what actually pays the rent and can differ between two people with the same salary. Gross pay is simpler to compare, so some couples use it anyway; either works as long as you both use the same one.
How do roommates split rent when one room is bigger?
Give each feature a share of the rent. On a $2,400 two-bedroom, you might count shared spaces as 40% split evenly and bedrooms as 60% split 55/45 toward the bigger room, which comes to $1,272 and $1,128.
What is the equal money left over way to split rent?
Each person keeps the same amount after rent. With $10,000 of combined take-home pay and $2,400 rent, $7,600 is left, so each keeps $3,800: the person taking home $6,000 pays $2,200 and the one taking home $4,000 pays $200.