How to budget as a couple: 50/50 or proportional?
Updated October 7, 2026 · By the Souski team
Fifty-fifty, in proportion to income, or everything pooled: there's no single right way to budget as a couple, but there is a method that avoids arguments. Here are the three ways to split shared costs, a worked example for each, and the setup that works for most couples.
Step 1: list your shared expenses
Before talking about who pays what, agree on what counts as "ours". Usually: rent or mortgage, household bills, energy, internet, home insurance, groceries, children's costs, and sometimes the car and holidays. Everything else (nights out with friends, clothes, personal hobbies) is each person's own business.
Example: Karim takes home €2,400 a month and Julie €1,600. Their shared expenses add up to €2,000 a month.
Step 2: choose how to split
Option 1: fifty-fifty
Each of you pays half the shared costs: €1,000 each. It's simple and ideal when your incomes are close. But here, Karim has €1,400 left for personal spending and savings, and Julie only €600.
Option 2: in proportion to income
Each of you pays a share that matches your pay. Karim earns 60% of the household income (€2,400 out of €4,000) and Julie 40%. Karim pays in €1,200 and Julie €800. They're left with €1,200 and €800: each keeps the same proportion of their pay. It's widely seen as the fairest option when there's a big income gap.
Option 3: the same amount left for each
The couple pools everything above an identical amount of "personal money" for both. Total income €4,000, shared costs €2,000: that leaves €2,000, so €1,000 each. Karim pays in €1,400 and Julie €600. It's the most pooled option, often chosen by long-term couples and families.
| Karim pays | Julie pays | Karim keeps | Julie keeps | |
|---|---|---|---|---|
| 50/50 | €1,000 | €1,000 | €1,400 | €600 |
| Proportional | €1,200 | €800 | €1,200 | €800 |
| Same left | €1,400 | €600 | €1,000 | €1,000 |
Step 3: set up your accounts
The most common setup is "yours, mine and ours": one joint account for shared costs, topped up every month by a standing order from each of you, and one personal account each for everything else. You get a clear view of household spending, and each of you stays free to spend your own money without having to explain it.
Schedule the transfers to the joint account for payday. Add a small buffer (€50 to €100) to absorb changes in grocery and energy bills.
Step 4: save together too
Pick a shared goal (holidays, a house deposit, a car, a household emergency fund) and a monthly amount, split the same way as your costs. Start with an emergency fund worth at least one month of shared costs. The savings goal calculator tells you the monthly amount for each plan.
Step 5: have a money check-in once a month
Fifteen minutes is enough: what went out of the joint account, any overspending, costs coming up (birthdays, back to school, tax) and progress on your goals. Talk numbers, not blame. If the split stops working (new job, parental leave), change it: it should follow your life, not the other way round.
Running your couple's budget with Souski
Souski doesn't offer a shared account for two yet. The simplest approach: one of you tracks the joint account in Souski, with an envelope for each shared cost (rent, groceries, energy…) and your shared savings goals. Each of you can also create your own free account for your personal budget. To set up your categories, borrow from envelope budgeting, and for the full method, read how to make a monthly budget.
Your budget ready in 3 minutes, your spending logged in 5 seconds. Free, no bank connection.
Frequently asked questions
Do we need a joint account to budget as a couple?
It isn't required, but it's the simplest way to pay shared costs: each of you pays your share in every month, and rent, groceries and energy come out of it. Bear in mind that with most joint accounts, each holder can be held responsible for the whole balance, overdraft included.
Is splitting 50/50 unfair?
Not if your incomes are similar. When there's a big gap, 50/50 leaves the lower earner with much less room: they can no longer save while the other one does. Splitting in proportion to income fixes that.
How do we work out each person's share proportionally?
Divide each person's take-home pay by your combined pay. With €2,400 and €1,600, that's 60% and 40%. Each of you then pays that percentage of the shared costs into the joint account.
What counts as a shared expense?
Housing and its bills, groceries, energy, internet, home insurance, childcare and children's costs, and often shared holidays. Personal hobbies, clothes and gifts usually stay on personal accounts. What matters is that you write the list together.
This guide gives general pointers and isn't personalised financial advice.