Should Couples Split Bills 50/50 Even with Different Incomes? Find Out!

Rent, groceries, entertainment, bills… Distributing expenses in a relationship is often a sensitive issue, especially when the incomes of the partners differ. “Money can really lead to a lot of conflicts and keeping a constant tally can be toxic for both parties,” notes Patricia Belassen, a clinical psychologist specializing in couples therapy. According to a CSA Research survey for Cofidis, 55% of couples report sharing all their expenses equally. Only 32% choose to contribute in proportion to their incomes, although in 86% of the surveyed couples, the partners do not earn the same amount. In three out of four cases, it is the man who earns more.

According to the psychologist, striving for a 50/50 split in expenses is “a delusion and a trap.” “It’s unfair to expect the same financial contribution within a partnership. This equality might reassure both parties, but in reality, it disadvantages them. The higher earner accumulates wealth while the other becomes poorer,” Belassen continues. This scenario is referred to as “the yogurt pot theory,” popularized by journalist and essayist Titiou Lecoq in her book “The Couple and Money.” Even with a superficial 50/50 arrangement, the higher earner ends up paying for major expenses and the lower earner handles everyday expenditures. As a result, in the event of a breakup, one partner has enhanced their assets while the other is left with little to show.

Statistics show that 52% of women more often take care of daily expenses (like groceries and children’s purchases), compared to 24% of men. Men, on the other hand, tend to handle financial investments and savings (47% versus 33% of women) as well as major purchases (33% versus 22%). Hence, not all expenses that immediately deplete the account are distributed in the same way as those that contribute to savings or asset acquisition. So how can couples equitably divide daily expenses without conflict?

“Set Clear Rules from the Start”

The first step is to discuss finances early in the relationship. “It's crucial to have this conversation before moving in together,” emphasizes Patricia Belassen. “It’s essential to understand how each person enters the relationship and whether you share the same values and vision regarding finances,” she adds. According to Belassen, the key is to share expenses based on income, thus establishing a proportional financial contribution.

“Equal sharing is simple, but it’s not fair,” Belassen reminds us. For a fairer distribution, each partner should contribute according to their income. For instance, if one earns 60% of the couple’s total income and the other 40%, they should cover 60% and 40% of the common expenses, respectively. “It’s about fairness to both parties and considering each person’s situation. Therefore, contributing according to one’s income is much more equitable.”

Thanks to Patricia Belassen, a clinical psychologist specializing in couples therapy.