My husband insisted we split our bills 50/50 for years even though he made more money. Now I make more, and he's refusing the same deal

Dave was making $40,000 more, but he still wanted everything split 50/50. Diane went along with it, even though the arrangement wasn’t always easy for her.

Then Dave lost his job. He eventually found another one, but it paid $95,000 a year. Meanwhile, Diane got a promotion that brought her salary up to $140,000.

So now Diane makes $45,000 more than Dave, and Dave wants to change how they split the bills. He thinks Diane should pay more because she earns more.

Diane can’t help but see the irony. When Dave was making more, he was fine with 50/50 — but now that Diane is making more, he wants a different arrangement.

For couples in this position, it can be worth taking a fresh look at how the bills are divided when one person’s income changes. After all, what worked before may not feel fair anymore.

When 50/50 doesn’t feel so fair anymore

There’s nothing wrong with splitting the bills 50/50 if it works for both people. The issues start when one person is putting the same dollar amount toward the bills but feeling a much bigger financial squeeze.

That’s the situation Diane and Dave could find themselves in now.

Certified financial planner Akeiva Ellis, CFP®, CPA, says couples shouldn’t get too hung up on whether the numbers are technically equal.

“Fair is subjective,” Ellis told Moneywise. “It comes down to what each couple decides for themselves.”

She suggests couples ask whether their arrangement is actually equitable instead of simply equal.

A lower-earning spouse might be perfectly comfortable paying half the bills, Ellis says, while someone else in the same financial position might feel overwhelmed by it. The numbers can be identical, but the experiences can be very different.

That’s something Diane and Dave may want to consider. If they each have $2,500 in monthly shared expenses, for example, that $2,500 takes up a larger share of Dave’s income now that he earns $95,000 than it did when he was earning $130,000.

But that doesn’t automatically make a 50/50 split unfair, either. It depends on what else is going on with their finances and what they have agreed to.

“Instead of asking ‘is it equal?,’ I’d ask ‘is it equitable?,’” Ellis says. “A contribution is equitable when both partners can honestly answer yes to two questions: Does everyone feel informed, respected, and secure? And does each partner have access to money they can use without fear, secrecy, or conflict? If either answer is no, the split needs work, regardless of what the math says.

Those things can get harder to sort out when incomes change. The Federal Reserve’s latest report on household finances found that 66% of adults and their spouse or partner received wages, salaries, or self-employment income in 2024. It also found that 29% of adults said their income varied at least occasionally from month to month.

So the arrangement that works when both paychecks are steady may need another look after a job loss, promotion, or major change in income.

The fairest way to split bills

Diane and Dave don’t have to choose between 50/50 and splitting everything according to income. They have a few options, and each comes with its own tradeoffs.

Keeping the 50/50 arrangement is the simplest. They always know what each person is responsible for, and they don’t have to recalculate the split every time someone’s salary changes.

The downside is that it doesn’t account for what each person has left after the bills are paid. As Ellis puts it, the same bill can mean a “wildly different sacrifice” for two people with different incomes.

They could also split expenses proportionally. Diane currently earns about 60% of their combined $235,000 income, while Dave earns about 40%. If they had $5,000 in monthly shared expenses, Diane would pay about $3,000 and Dave about $2,000 under that arrangement.

That may feel more balanced, but it also means revisiting the numbers whenever either person’s income changes. And that is exactly what has happened to Diane and Dave.

Ellis says couples should talk through the reason for a proposed change before reaching for the calculator. In Dave’s case, she says the request could be about more than money. Losing a job can affect someone’s sense of control or independence, and there could also be discomfort around suddenly earning less than a spouse.

“Talking through the emotional layer first, before touching the spreadsheet, tends to get couples further,” Ellis says.

Another option is to pool their income and treat the household’s money as one pot.

That’s the approach Bridget Venus Grimes, CFP®, president of WealthChoice and a CFP® Board Ambassador, generally recommends.

“I believe couples who combine their income and share expenses have far better relationships around money than those who split expenses based on income,” Grimes told Moneywise.