In short

No, it isn't required: it depends on your habits and your incomes. For many couples, the simplest setup is a joint account for shared costs, funded in proportion to each person's income, plus a personal account each.

Both sides

Version A · Inès

We've lived together for two years and we share everything except money. Every month we send each other payments for groceries, rent and bills, and it wears me out. I earn less than Thomas, and paying half of everything leaves me with very little by the end of the month. To me, a joint account shows we're really building something together.

Version B · Thomas

I love Inès, but I've always handled my own money and that matters to me. I don't want to justify every purchase or gift. Splitting costs down the middle feels fair and simple. I've watched friends argue constantly over a shared account, and I don't want that.

The verdict

Who's right, according to the AI
Inès 55 % Slight edgeThomas 45 %

Inès raises a real issue: when incomes differ, a strict 50/50 split weighs much more heavily on the person who earns less. She's also right about the practical side: monthly back-and-forth payments are tiring and create needless friction.

Thomas is defending something legitimate too: keeping some independence and not having to account for every expense. Pooling absolutely everything isn't a requirement for a loving relationship, nor proof of commitment.

The edge goes to Inès, because fairness in how costs are shared is the heart of this conflict. But she'd do well to drop the "everything in common" idea: a mixed setup meets her needs without taking away Thomas's freedom.

The compromise

Open a joint account just for shared costs (rent, groceries, bills), and each pay in a share proportional to your salary. Keep your personal accounts for your own spending, no explanations needed. Review the amounts together every six months.

Who do you think is right?

Pick a side.

Frequently asked questions

How do you split costs when you don't earn the same?

Many couples split in proportion to income: if one partner earns 60% of the household total, they cover 60% of shared costs. That way, both keep roughly the same amount left over each month.

Does a joint account mean pooling everything?

No. You can pay in a fixed monthly amount for household costs and keep the rest in your own account. This is often the setup that causes the fewest arguments.

When is the right time to open a joint account?

There's no universal right time. It often becomes handy when you move in together and shared bills start piling up. What matters is discussing it openly first, not imposing it.

What if we disagree about spending from the joint account?

Agree on a list of what the account covers and set an amount above which you check with each other before buying. Clear rules prevent most of the blame.

Is keeping a separate account a sign of mistrust?

Not necessarily. Wanting your own space is usually about independence, not suspicion. What counts is being open about the big picture of your budget.

Written with the help of AI, reviewed by the Who's Right team · This is not legal advice. How Who's Right decides

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