50/50 (equal split)
| Person | Pays | Has left |
|---|---|---|
| Person A | pays £800(50%) | £1,893 |
| Person B | pays £800(50%) | £993 |
Household Bills Splitter: See Every Fair Way to Split, Side by Side
- No login, nothing stored
- 7 min read
Who's sharing?
Monthly take-home pay- £
- £
Shared monthly bills
£1,600.00Every fair split, side by side
Proportional to income
| Person | Pays | Has left |
|---|---|---|
| Person A | pays £960(60%) | £1,733 |
| Person B | pays £640(40%) | £1,153 |
Equal disposable income
| Person | Pays | Has left |
|---|---|---|
| Person A | pays £1,250(78%) | £1,443 |
| Person B | pays £350(22%) | £1,443 |
Bars show what each person has left each month after their share. Nothing you enter leaves this page.
Use this free household bills splitter to divide rent, energy, council tax, and every other shared cost between two or more people and, more importantly, to compare the three fair ways of doing it.
Enter your bills and each person's monthly take-home pay, and you'll see the 50/50 split, the proportional-to-income split, and the equal-disposable-income split side by side, including the number that actually settles the argument: what each person has left after paying.
It runs entirely on this page. No app to download, no account to create, no financial data sent anywhere; enter your numbers, get your answer, and screenshot it for the house group chat.
The Three Fair Ways to Split Household Bills
50/50 (or equal n-way)
Everyone pays the same. Simple and transparent and the default for housemates with similar incomes, but when incomes differ a lot, “equal” stops meaning “fair”: the lower earner gives up a much larger share of their pay for the same roof and radiators.
Proportional to income
Each person pays the same percentage of their take-home. If you bring in 60% of the household's income, you pay 60% of the bills. This is the most commonly recommended method for couples with an income gap; everyone makes an equal sacrifice as a share of what they earn.
Equal disposable income
Bills are split so that both people are left with exactly the same amount afterwards. The full “we're a team” method is one step short of a joint account; the higher earner pays substantially more, and both partners walk away with identical spending money.
Worked Example: Same Household, Three Very Different Answers
Two partners share £1,600 of monthly bills. One earns £40,000 (take-home £2,693 a month); the other earns £25,000 (take-home £1,793). Here's every method, computed with the same 2026/27 tax engine as our take-home calculator:
| Method | A pays | B pays | A has left | B has left |
|---|---|---|---|---|
| 50/50 | £800 | £800 | £1,893 | £993 |
| Proportional to income (60/40) | £960 | £640 | £1,733 | £1,154 |
| Equal disposable income | £1,250 | £350 | £1,443 | £1,443 |
Same bills, same couple, and the lower earner's month-end position ranges from £993 to £1,443, depending on the method. This is why “how should we split the bills?” causes so many arguments: people are usually defending different methods without naming them. Put your own numbers in the splitter above, and the comparison does the talking.
B's money left each month
- 50/50£993
- Proportional to income£1,154
- Equal disposable income£1,443
Which Method Should You Use?
- 1
Similar incomes, or housemates rather than partners
50/50 (or equal n-way) is simple, and nobody resents it. Most house shares use this.
- 2
A couple with a meaningful income gap
Proportional to income is the most widely recommended middle ground; a partner earning four or five times more splitting 50/50 while the other is constantly broke is the classic fairness failure.
- 3
Long-term partners who pool their lives but not (yet) their accounts
Equal disposable income mirrors a joint account without opening one.
- 4
Fully merged finances
One pot, one budget, no splitter needed. Plenty of married couples do exactly this, and it's the simplest system of all.
- 5
One partner owns the home
Many treat the mover-in's contribution like rent (often around half the local market rent plus shared utilities) rather than half the mortgage because the mortgage builds equity only the owner keeps. If you're living together long-term on one person's property, a cohabitation agreement is worth considering; Citizens Advice explains living-together rights.
- 6
Blended families
A common convention is to exclude child-specific costs (clubs, childcare, kids' phone contracts) from a new partner's share and split only genuinely shared household bills; the splitter's excluded-items row handles this.
Split on Take-Home Pay, Not Salary
Proportional and equal-disposable methods only work if you use the right income figure: monthly take-home, not annual salary.
Two £35,000 salaries can produce very different take-homes once student loans, pension contributions, and tax codes differ, and it's the take-home that pays bills. Get each person's exact figure from our take-home pay calculator first, then enter it here.
Salary
£35,000
What adverts quote
Take-home
Split on this
The money that exists
What Counts as a Household Bill?
Usually shared
Rent or mortgageEnergyWaterCouncil taxBroadbandTV licenceContents insuranceShared groceries
House-by-house calls
Streaming subscriptionsCleaning costs
Normally personal
Phone contractsGym membershipsIndividual debtsOne person's car
The splitter lets you add any bill line, so the definition is ultimately whatever your household agrees it is. What matters is agreeing on it once, out loud, rather than renegotiating at every statement.
What About the 50/30/20, 7-7-7, and 3-3-3 Rules?
These come up constantly alongside bill-splitting questions, so for clarity, the 50/30/20 rule is a budgeting guideline: 50% of take-home to needs, 30% to wants, and 20% to savings, not a method for dividing bills between people, though it pairs well with any split method.
Frequently Asked Questions
Should husband and wife split bills 50/50?
There's no rule, but 50/50 with a large income gap consistently causes resentment, which is why proportional or fully pooled finances are the most recommended setups for married couples. The real answer is whichever method both people consider fair after seeing the numbers side by side.
Is it a red flag to split bills in a relationship?
Splitting bills isn't a red flag; refusing to discuss how is. A partner insisting on 50/50 while earning several times more, or keeping money entirely opaque, is the pattern people warn about. Transparency about the method matters more than the method itself.
How do we split bills with very different incomes?
Use the proportional method as a starting point: each pays the same percentage of their take-home. If the gap is large and the relationship is long-term, compare it with equal disposable income, the version where you both end the month with the same spending money, and pick the one that feels right.
How should we split bills when one of us owns the house?
Most commonly, the non-owner pays a rent-like contribution (benchmark against local rents, often around half) plus their share of utilities, rather than half the mortgage, because mortgage payments build equity that belongs to the owner. Put the arrangement in writing if it's long-term.
Do we need an app for this?
Not for working out the split. Apps like Splitwise are useful for tracking who paid what over time, but the calculation itself, who should pay how much, is what this page does, free, with no account and no data leaving your browser. Many people run the split here once, then set up standing orders.
Should we split on gross or net income?
Net (take-home). Gross ignores student loans, pensions, and tax differences that change what people actually receive. Take-home pay is the money that exists; split on that.
Split Your Household Bills Now
Money arguments in a shared home are usually method arguments in disguise. This household bills splitter puts all three fair methods next to each other, what each person pays and what each person keeps, so the decision becomes a five-minute conversation instead of a recurring fight. Scroll up, enter your bills and take-home pay, and see every version of fair.
Results are estimates, not financial or legal advice. See our Disclaimer. Questions or corrections: [contact email].