How income requirements are calculated
Most landlords screen applicants by comparing gross (pre-tax) income with the monthly rent. The rules sound different, but they are all the same calculation with a different multiple. The calculator converts each one to an annual multiple of the monthly rent:
| Standard | Same as | Income needed at $3,000 rent |
|---|---|---|
| Monthly income ≥ 2.5× rent | 30× annual | $90,000 |
| Monthly income ≥ 3× rent | 36× annual | $108,000 |
| Rent ≤ 30% of income | 40× annual | $120,000 |
| Annual income ≥ 40× rent | 40× annual | $120,000 |
| Guarantor at 80× rent | 80× annual | $240,000 |
Notice that the "30% of income" rule and NYC's "40 times the rent" rule are identical: 30% of annual income equals 12 months of rent when income is 40 times the monthly rent. A 3× monthly rule is a little looser.
Rent-to-income = monthly rent × 12 ÷ annual gross income. Income multiple = annual gross income ÷ monthly rent.
Where does 30% come from? The US Census Bureau notes that HUD considers a household spending more than 30% of its income on rent, mortgage and other housing costs to be cost-burdened. Census reported that in 2023 about half of US renter households (49.7%) were over that line. The 30% figure is an affordability benchmark; the 2.5×, 3× and 40× multiples are landlord practice, not law.
Worked example
Two roommates apply for a $3,000 apartment. One earns $72,000 and the other $54,000, a combined $126,000. The landlord uses the 40× standard, so the household needs $120,000.
- Combined: $126,000 ÷ $3,000 = 42× the rent, and rent-to-income is 28.6%. They pass.
- Each on an equal share: some landlords ask each roommate to qualify for their half ($1,500). At 40× that is $60,000 each. The first roommate passes; the second is $6,000 short and may need a guarantor.
- Guarantor: a guarantor at 80× the full rent would need $240,000 a year. Some landlords apply the guarantor multiple only to the share that falls short, so ask.
Fair housing rules that apply
HUD says the federal Fair Housing Act bars discrimination in housing because of race, color, national origin, religion, sex, familial status or disability. Use one written standard and apply it to every applicant the same way.
Landlords in NYC should read source of income rules for landlords and tenant screening rules in New York. Renters can read source-of-income discrimination: is it happening to you?
Edge cases
- Gross, not take-home: standards use income before taxes. Use the take-home pay rent budget calculator to see what you can really afford.
- Irregular income: freelancers usually prove income with tax returns, bank statements or a CPA letter; landlords decide what they accept.
- Rent with a voucher: the voucher pays part of the rent, so ask the landlord how it is counted. In NYC, the Commission on Human Rights lists telling an applicant that a voucher does not count toward a minimum income requirement as a sign of possible discrimination.
What to do next
Renters can plan a realistic budget with the rent affordability calculator or the take-home pay rent budget calculator. If you need a co-signer, check the guarantor income calculator and read the NYC 40x rent rule and apartment guarantor requirements.