Household bill split comparison.
Compare equal and income-based contributions with exact settlement-unit totals.
UNDERSTAND THE ESTIMATE
How to use this planner
Enter one shared monthly bill and two to six take-home incomes. Compare an equal split with contributions proportional to income, using your chosen settlement precision.
The calculation
Equal share = total bill / number of people. Income-proportional share = total bill × individual income / combined income. Shares are allocated in settlement units, with remaining units going to the largest fractional remainders; ties favor earlier rows.
One monthly shared cost and entered take-home incomes. Neither method determines fairness, affordability or legal bill responsibility. No transfers, personal spending or accounts. Estimates are not financial advice.
MoneyHelper guide to managing money together ↗ILLUSTRATIVE EXAMPLE
Follow the numbers
Two people earn 3,000 and 2,000 and share a bill of 1,500. Equal shares are 750 each. Income-proportional shares are 900 and 600. Each method allocates exactly 1,500.
Which split is fairest?
The calculator compares arithmetic, not fairness, affordability or legal responsibility. Personal expenses and debts are excluded. A proportional split is unavailable for a positive bill when combined income is zero.