Rent Affordability Calculator

Find your affordable monthly rent from your income, and check it against the tests landlords actually apply.

What this calculator does

The 30% rule is the common starting point: no more than 30% of gross income on rent. It is a guideline rather than a law of nature — in expensive cities many people pay more, and in cheaper ones a lower share leaves useful room.

Landlords apply their own tests, most often requiring annual income of at least 40 times the monthly rent, or monthly income of three times the rent. Both are shown so you can see what you would actually qualify for.

Worked example

On the values this calculator opens with, the affordable rent is $1,550. Underneath, Gross monthly income comes out at $5,166.67 and Landlord 40× annual test at $1,550 per month. Change any field and every figure updates as you type.

Step by step

  1. Enter your gross annual income.
  2. Add monthly debt payments and other housing costs.
  3. Choose which affordability rule to apply.

How the number is calculated

30% rule: max rent = gross monthly income × 0.30 landlord 40× test: max rent = annual income ÷ 40 3× test: max rent = gross monthly income ÷ 3

Questions people ask about this

Is the 30% rule realistic?
Less so in high-cost cities, where many renters exceed it. Treat it as a target rather than a hard limit, and watch what is left after debts.
What is the 40× rule?
Many landlords require annual income of at least forty times the monthly rent — $80,000 a year to qualify for $2,000 a month.
Should utilities count?
Yes. Include utilities and parking in your housing budget, since they are unavoidable costs of the same decision.