Free calculator
Split household expenses by income
Enter what each person earns and the total of the shared expenses: the calculator shows each person’s percentage, what they put in every month and what is left of their income. Switch to equal parts to compare.
It works for a couple, for roommates or for a family with more than one income: two to four people. Change the names and the figures; the result updates as you type and nothing is saved.
01
How to use the calculator
Enter who shares and what each one earns
Use take-home pay, not gross salary. If someone’s income varies, use an average of the last few months.
Add up the shared expenses
The monthly total of what belongs to the household: rent, building fees, utilities, internet, groceries.
Choose how you split
By income splits in proportion to what each one earns; equal parts gives everyone the same share. Switch between them to see what is left for each person.
If someone already paid, enter it
With what each person paid, the calculator tells you who pays whom to come out even, using the same percentages.
02
Proportional vs. equal split
Splitting by income means everyone puts in the same percentage of what they earn. If together you bring home $ 125,000 and one of you earns $ 75,000, that person brings 60% of the household’s money and pays 60% of the expenses. An equal split is simpler, but when incomes are far apart, the person who earns less ends up with much less to spare.
- By income: Ana puts in (60%)
- $ 36,000
- By income: Martín puts in (40%)
- $ 24,000
- By income: left for each
- $ 39,000 and $ 26,000
- Equal parts: each puts in
- $ 30,000
- Equal parts: left for each
- $ 45,000 and $ 20,000
By income, both spend 48% of what they earn on the household. In equal parts, Ana spends 40% and Martín 60%.
- By income tends to feel fairer when incomes differ a lot and the expenses are equally everyone’s: rent, food, bills.
- Equal parts works when you earn about the same, for roommates with separate finances, or when nobody wants to share their salary.
- Custom: you can also agree on something else, say 55/45, because one person uses the car more. What matters is that you agree on it and revisit it when an income changes.
04
Expenses in more than one currency
Keep each currency separate. If rent is in dollars and the rest in pesos, run the calculator twice with the same percentages: once with the dollar total and once with the peso total, so nobody depends on the exchange rate used to add them up. If incomes are in different currencies, convert one at today’s rate only to work out the percentages. The currency selector only changes how figures are written; it converts nothing. Llegamos handles several currencies per group and settles each one on its own.
05
Keep the split going month after month
The calculator gives you the agreement; keeping it is the hard part. In Llegamos the split is saved as the group’s agreement, equal or with a percentage for each person that the app can propose from what each one earns. Everyone enters what they pay and Between you tells you who owes how much to whom, with one tap to mark it as paid back.
Frequently asked questions
Is it fairer to split by income or in equal parts?
It depends on how different your incomes are and what you agree on. By income, everyone spends the same share of what they earn on the household; in equal parts, whoever earns less keeps less. Try both in the calculator and compare what is left.
Should I use gross or take-home pay?
Take-home pay: it is the money that actually pays the bills. If an income varies, use an average.
What if one person has no income for a while?
Split by income, their share is zero. If you would rather they still put something in, pick equal parts or a custom percentage for that period.
Does the calculator store what I type?
No. Everything is worked out in your browser and nothing is sent anywhere; close the page and it is gone.
Does it work for more than two people?
Yes, up to four in the calculator. A Llegamos group can have as many people as you want, on the free plan too.