Rent Affordability Calculator
Determine the maximum monthly rent you can afford based on your gross income, existing debts, and the standard affordability rules used by landlords and financial advisors.
Your total monthly income before taxes and deductions.
Car loans, student loans, credit card minimums, etc.
Electricity, gas, water, internet (if not included in rent).
The percentage of gross income allocated to housing costs.
Formulas Used
30% / 28% Rule:
Max Housing Budget = Gross Monthly Income × Rule % Max Affordable Rent = Max Housing Budget − Estimated Utilities
50/30/20 Rule (50% Needs Bucket):
Max Housing Budget = Gross Monthly Income × 50% Max Affordable Rent = Max Housing Budget − Utilities − Monthly Debt Payments
Debt-to-Income Ratio (DTI):
DTI = (Max Rent + Utilities + Other Debts) / Gross Monthly Income × 100
Recommended Annual Income (Landlord Standard):
Recommended Annual Income = Max Affordable Rent × 40
The ×40 rule reflects the common landlord requirement that annual income ≥ 40× monthly rent (equivalent to rent ≤ 30% of gross annual income).
Assumptions & References
- 30% Rule: The U.S. Department of Housing and Urban Development (HUD) defines housing as "affordable" when it costs no more than 30% of a household's gross income. (HUD, 2023)
- 28% Rule: A conservative variant used by some mortgage lenders; also applied to rental affordability for financially cautious budgeting.
- 50/30/20 Rule: Popularized by Senator Elizabeth Warren in All Your Worth (2005); allocates 50% of after-tax income to needs (rent, utilities, debts), 30% to wants, 20% to savings. This calculator applies the rule to gross income as a simplified estimate.
- DTI Thresholds: ≤36% is considered healthy; 37–43% is acceptable by most lenders; >43% is the maximum for qualified mortgages (CFPB). Similar thresholds are used by landlords for rental applications.
- ×40 Income Rule: A widely used landlord screening standard in the U.S. requiring annual gross income of at least 40× the monthly rent.
- All calculations use gross (pre-tax) monthly income. Actual take-home pay will be lower after taxes.
- Utilities estimate should include electricity, gas, water, and internet if not bundled into rent.
- This calculator is for informational purposes only and does not constitute financial advice.