Couples expense split calculator
Should you split 50/50 or by income? Enter both take-home pays and your shared costs to see each partner's share, how much of their pay it takes, and what's left over.
1. Partners
2. Shared monthly costs
Result
How the proportional split works
Each partner's share = shared costs × their income ÷ combined income. Both partners then spend the same percentage of their pay on shared costs, instead of the same dollar amount.
Read more in 50/50 vs proportional: which is fair? and 3 ways couples split bills. Splitting subscriptions too? Try the subscription splitter.
Other splitting tools
- Roommate bill split calculator
Split rent and recurring bills equally, by income, room size or percentage. - Rent split by room size & features
Weight rent by square footage, private bathrooms, closets and other perks. - Prorated utilities calculator
Split a bill fairly when someone moves in or out mid-month. - Trip & group expense splitter
Track who paid what and settle up with the fewest payments. - Security deposit split
Share a deposit refund after shared deductions and individual damage. - Subscription & streaming splitter
Split Netflix, Spotify and yearly memberships between the people who use them.
Frequently asked questions
Should couples use gross or take-home pay?
Take-home pay is usually fairer, because it's the money you actually have to spend. Gross pay works too, as long as you both use the same kind of number.
What if one partner has no income?
A pure income split would put 100% of costs on the earner. Many couples agree on a custom ratio instead, which accounts for unpaid work like childcare or study.
Is proportional splitting better than 50/50?
It's more equitable when incomes differ a lot, because both partners keep a similar share of their pay. 50/50 is simpler and works well when incomes are close.
Which costs should be shared?
Most couples share rent or a mortgage, utilities, groceries and household supplies. Personal spending such as hobbies, clothes and gifts usually stays separate.