Shared Expenses Calculator
Split a shared bill 50/50 or in proportion to each person's income, and compare the two.
For example rent, utilities and groceries you pay together.
Split by income, everyone pays
18.75%
of their own income towards the shared bill
| Person | Income share | 50/50 split | Split by income |
|---|---|---|---|
| Person 1 | 62.5% | 3,000.0015% of income | 3,750.0018.75% of income |
| Person 2 | 37.5% | 3,000.0025% of income | 2,250.0018.75% of income |
Works with any currency; use the same one for the bill and every income. Shares are rounded to the cent and always add up to the bill. Everything is calculated in your browser and nothing you enter is saved or sent anywhere.
What this calculator does
Couples and housemates with different incomes often debate whether to split shared costs equally or in proportion to what each person earns. This tool shows both options side by side, including how much of each person's income the bill takes under each approach.
How to use it
- Enter the shared bill, such as monthly rent, utilities and groceries combined.
- Enter each person's monthly income, using the same currency and the same basis (for example, take-home pay) for everyone.
- Compare the 50/50 split with the split by income and agree on what feels fair.
Formula
In an equal split, each person pays bill ÷ number of people. In a proportional split, each person pays bill × their income ÷ total income, so everyone contributes the same percentage of their income.
For example, with a 6,000 bill and incomes of 20,000 and 12,000, a 50/50 split is 3,000 each, while a split by income is 3,750 and 2,250 — 18.75% of each income.
How to interpret the result
Neither approach is right for everyone. A proportional split leaves both people with the same share of their income after shared costs; an equal split is simpler and suits people with similar incomes. Many households use a mix, such as splitting rent by income and splitting groceries equally.
Limitations
The calculator uses the incomes you enter as they are. It does not account for savings goals, debts, childcare, unpaid work at home or individual spending, all of which can change what feels fair.
Should I use gross or take-home income?
Either works as long as everyone uses the same basis. Take-home pay usually reflects what each person can actually spend.
What if someone has no income?
In a split by income, a person with no income pays nothing. The 50/50 column still shows an equal share so you can compare the two.
Is anything I enter saved?
No. The split is calculated in your browser and nothing you type is stored or sent to a server.
Splitting a restaurant bill with a tip? Use the Tip Calculator.
Check which pack is cheaper with the Unit Price Calculator, or break down a UAE pay package with the UAE Salary Calculator.