RoomRatio

Split rent based on income

A 50/50 split can put very different pressure on two incomes. Enter each person's income locally, compare proportional amounts, and share the result without sharing salaries.

No signupTransparent formulaExact cent rounding
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How do you want to split it?

By income · proportional to each share of total income

People2
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$
Share amounts, not salaries. Your raw income is never shown.
Each person paysTotal $3,000.00

By income · proportional to each share of total income

Example — edit any value
Alex
60%+$300.00 vs equal
$1,800.00
Sam
40%−$300.00 vs equal
$1,200.00
Compared with 50/50
This method shifts $300.00/month between the two shares.
$3,600.00 over 12 months.
Alex+$300.00 vs equal
Sam−$300.00 vs equal
Would everyone in the household choose the same method?
This is a rent split summary, not legal advice.
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How this was calculated
  • Each person pays in proportion to income. Salaries are not shared.

Share amounts, not salaries. Your raw income is never shown or shared.

How an income-based rent split works

Each person's share equals their income divided by total household income. RoomRatio applies that percentage to rent, then displays the monthly amounts and deterministic rounding.

Formula
rent × person's income ÷ total household income

Example: a 60/40 income split

For $3,000 rent and monthly incomes of $6,000 and $4,000, the income shares are 60% and 40%. The rent amounts are $1,800 and $1,200, totaling exactly $3,000.

Assumptions to review

  • Everyone agrees which income period and definition to use.
  • The result is one negotiation method, not an objective rule for every household.
  • Raw income stays in the calculator and is excluded from shared previews.

Frequently asked questions

Does a shared result show our salaries?

No. Shared summaries contain the selected method, percentages, and rent amounts, but not raw income values.

Should we use gross or net income?

Either can work if everyone uses the same definition and agrees it reflects the household's situation.