Home & couples
Couple expense split calculator
How much should each of you put toward household costs? Choose a method (split evenly, proportional to income, or custom) and instantly see what each person contributes and what they have left.
Your income
Example
$
$
Household income: $4,400/mo
Shared expenses
Total shared expenses per month
$
Rent or mortgage, utilities, groceries… anything you pay for together.
How do you split it?
50 / 50
Proportional
Custom
Who contributes what
Emma
59.1%
$1,182
James
40.9%
$818
E
Emma
$2,600/mes
Aporta
$1,182
Le queda
$1,418
J
James
$1,800/mes
Aporta
$818
Le queda
$982
With a split proportional to income, Emma contributes $1,182 (59%) · James contributes $818 (41%). Each person keeps their income minus their contribution to the shared expenses.
How to read the result
The bar shows what share of the shared expenses each person covers. Below it, each card shows their contribution and, most importantly, how much money they have left after paying their share. That "what's left" number is usually the one that matters most day to day.
The three ways to split
- — Even split (50/50): each person pays the same amount. Simple, but it can weigh more heavily on whoever earns less.
- — Proportional to income: each person contributes based on what they earn. The most common choice when there's an income gap.
- — Custom: split using whatever percentages you agree on, with full control over the numbers.
An example
If Emma earns $2,900 and James earns $2,000, their combined income is $4,900. With a proportional split of $2,200 in shared expenses, Emma would contribute about $1,302 (59%) and James about $898 (41%). Emma would have $1,598 left and James $1,102 for personal spending and savings.
Frequently asked questions
How do you split expenses fairly as a couple?
There's no single "correct" way. It depends on your situation and what you agree on. The three most common methods are an even split (50/50), proportional to each person's income, or a custom split. This calculator shows you each option instantly.
What is a proportional split based on income?
Each person contributes in the same proportion their income represents of the combined total. If one person earns 60% of the household's total income, they cover 60% of the shared expenses. That way the effort feels similar for both, even if the amounts differ.
How much should each person contribute?
Enter your incomes and your shared expenses, then pick a method: the calculator splits the total and shows how much each person contributes, what percentage that represents, and how much money is left over afterward.
Is our data saved anywhere?
By default, nothing is sent to any server: if you tap "Save to my household," the data is stored only on this device so you can reuse it in other tools. If you sign in with Google on the Household page (optional, never required), that data is also saved privately in the cloud so you can access it from any device. You can use the calculator without saving anything.
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