Rent Affordability Calculator: How Much Rent Can I Afford?

The usual guideline is to keep housing at or below 30% of gross income, and the U.S. Census Bureau and HUD count households above that line as cost-burdened. But 30% can still be too much if you already carry car or student loan payments. This calculator checks both the housing share and a cap on housing plus debts, takes the lower figure, and subtracts utilities you pay yourself.

How to use this tool

1. Enter your household’s yearly income before tax.
2. Add up your monthly debt payments.
3. Keep 30% as the housing share, or choose your own.
4. Set the cap on housing plus debts (36% is an editable planning assumption).
5. Enter the utilities you would pay on top of rent.

Formula

Housing budget = min(G × share, G × cap − debts)
Maximum rent = housing budget − utilities

G is gross monthly income (yearly income ÷ 12). The share rule limits housing on its own; the cap limits housing and debt payments together. The 40× result illustrates yearly income of 40 times monthly rent; it is not universal. Rent floors at zero even if utilities exceed the cap.

Example

With $72,000 a year ($6,000 a month gross), $400 of debt payments and $150 of utilities, the 30% rule allows $1,800 for housing. The 36% cap allows $2,160 for housing and debts together, which is $1,760 after the $400 of debts, so the debt cap is the tighter limit. Take off utilities and the maximum rent is $1,610 a month ($19,320 a year). A landlord using the 40× rule would want $64,400 of yearly income for that rent.