Everyday
Budgeting as a couple: three ways to split, and how to choose
The subject rarely causes a row about money. It causes one because the system was never said out loud.
The three systems
There aren't thirty of them. Each has a logic and a flaw, and the right choice depends mostly on the gap between the two incomes.
Everything shared
One pot. Simple, and closest to « we're a team ». But every personal purchase becomes visible, and sometimes debatable.
Everything separate, fifty-fifty
Each pays half the bills. Clear, but unfair the moment incomes differ: the smaller salary ends up with no room at all.
Proportional
Each puts the same percentage of their income into the shared pot. The fairest, and the one that needs the most trust: you have to tell each other your salaries.
The mixed one, in practice
A joint account for the bills, two personal accounts for the rest. The most common system, because it preserves a zone that needs no justification.
Proportional, in numbers
Two take-home incomes, 5,400 and 3,600 CHF. Shared costs come to 3,000 CHF a month.
| Fifty-fifty | 1,500 / 1,500 |
| Left for the first | 3,900.— |
| Left for the second | 2,100.— |
| Proportional (33% each) | 1,800 / 1,200 |
| Left, as equal shares of income | 3,600 / 2,400 |
Same total in the pot. But in the first case, one of them has almost twice as much to live on as the other. In the second, both keep the same proportion of their income.
The conversation to have first: not « who pays what », but « what counts as shared ». Rent, obviously. Holidays? The present for your mother? One person's bike? The list is more useful than the percentage.
What breaks a two-person budget
- Loans that never get repaid. « I'll pay you back later » repeated twelve times becomes an invisible debt and a very visible resentment.
- Judged spending. If every personal purchase has to be justified, the system will be worked around, not followed.
- Silence about debt. A consumer loan discovered after two years costs more in trust than in money.
Should you track everything in the same app?
Not necessarily, and it is often counterproductive. What needs to be shared is the joint costs. The rest can stay with each of you.
With Monni, each of you records your own spending and creates a « shared » category. Both see their part without anyone having access to the other's account — and nothing leaves the phone.
Common questions
What's the fairest way to split money in a couple?
Proportional: each puts the same percentage of their income into the shared pot. On equal incomes it comes back to fifty-fifty; on unequal ones it stops the smaller salary being left with no room.
Do we need a joint account?
A joint account for the bills plus two personal accounts for the rest is the most common system, because it preserves a zone of spending that needs no justification.
How do we handle it when one earns much more?
By moving to proportional, and by saying clearly what counts as shared. The imbalance is not the amount paid in, it is what each has left afterwards.
Do we have to tell each other our salaries?
For the proportional system, yes — that is the condition. For the mixed one, not necessarily: agreeing on the amount of the shared costs is enough.
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