Two salaries can create more income and more complexity.

One person pays the mortgage. The other covers childcare, groceries and the stream of smaller family costs. Both feel they are paying for everything. Neither can see the whole household picture.

The problem may be visibility, not spending

Separate accounts are not a problem by themselves. The problem is when the household has no shared view of income, fixed costs, debt, insurance, pensions and savings.

Create one household number.Add every genuinely shared cost, including annual expenses.
Agree the contribution method.Equal amounts and proportionate contributions can both be fair in different households.
Keep personal autonomy.A shared account does not require every euro to become joint.
Give shared savings a name.Emergency money, a home project and a holiday are different jobs.

A monthly 20-minute household money meeting can do more than another budgeting app if it makes the full picture visible to both people.