Rent Affordability Calculator
Adjust the inputs below. Results update as you type.
How it works
Rent affordability rules of thumb (often ~30% of gross income) help screen listings, but landlords may underwrite on net income, credit, employment history, or a rent-to-income ratio that includes utilities. Enter the income definition that matches how you will apply—gross monthly for a quick screen, or take-home if you want a cash-flow comfort check. Subtract other fixed debts before stretching to the maximum. Local housing markets, roommate splits, and parking fees can change what is actually payable. Treat the result as a ceiling to shop under, not a promise of approval.
Input guidance
- Use realistic rates from lender or provider quotes instead of headline averages.
- Model conservative, baseline, and optimistic scenarios before deciding.
- Include recurring real-world costs (fees, taxes, insurance, maintenance) where relevant.
The formula
Affordable rent is usually capped near 30% of gross monthly income, or set so income is at least 3× the rent: max rent = income × 0.30 (or income ÷ 3).
Worked example
On $4,500 gross monthly income, the 30% rule suggests about $1,350 rent; a landlord's 3× income rule would also support roughly $1,500.
More examples to test
- Conservative case: use a higher interest rate and lower growth assumptions to stress-test affordability.
- Optimistic case: use a lower rate with stable income assumptions to compare upside potential.
How to interpret results
Treat this as a planning model, not a final approval tool. Compare at least two scenarios and focus on total-cost and cash-flow trade-offs.
When this can be inaccurate
Results can diverge due to fees, changing rates, tax rules, lender policies, and behavior changes that simplified models cannot fully capture.
Change history
- July 2026: Quality-reviewed for publication with formula checks and explanatory copy updates.
Site-wide corrections also appear on the corrections log.
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Frequently asked questions
How much rent can I afford?+
A common rule keeps rent at or below 30% of gross income, leaving room for utilities, food, savings, and other bills.
Do landlords check income?+
Often. Many require gross income of at least three times the monthly rent, plus a credit and background check, to approve a lease.
What if rent exceeds 30%?+
Common in pricey cities. It can work if your other expenses and debt are low, but it leaves less margin for saving and surprises.
How should I use this result?+
Treat it as a planning estimate. Compare at least two realistic scenarios, then confirm with statements, quotes, or a qualified professional before acting.
How often should I refresh assumptions?+
Refresh whenever rates, income, costs, or policy limits change materially, and before making irreversible commitments.