The 3x rent rule means your gross monthly income must be at least three times the monthly rent. For a $2,000 apartment, that's $6,000 a month, or $72,000 a year before tax.
Enter the rent and the landlord's multiple, and the calculator returns the monthly income you'll need to show. The multiple field takes other tests too, such as 2.5 or 3.5.
How much do you need to earn for your rent?
The 3x test is a monthly one, but job offers come as a yearly salary. To compare the two, multiply the rent by 36: three times the rent, for 12 months.
| Monthly rent | Yearly gross income needed at 3x |
|---|---|
| $1,200 | $43,200 |
| $1,600 | $57,600 |
| $2,000 | $72,000 |
| $2,500 | $90,000 |
| $3,000 | $108,000 |
Every extra $100 of rent raises the salary you need by $3,600 a year. Paid by the hour or every two weeks? The annual income calculator turns your pay into a yearly figure first.
Gross income, not take-home pay
The test uses gross income: your pay before income tax, Social Security, Medicare and other deductions. So compare the landlord's figure with the salary on your offer letter, not with the deposit in your bank account.
That makes the rule looser than it looks. After deductions, rent takes a bigger share of the money you can actually spend. The salary calculator shows what federal income tax and FICA leave from a salary.
Is 3x rent affordable by HUD's standard?
Not quite. HUD, the U.S. housing department, draws the line at 30%. It counts families as cost-burdened when they "pay more than 30 percent of their income for housing." Above 50%, the burden counts as severe.
At exactly three times the rent, rent takes 1 ÷ 3 = 33.3% of gross income. Here's the share on a $2,000 rent under common income tests:
| Income test on a $2,000 rent | Gross monthly income | Rent as a share of gross income |
|---|---|---|
| 2.5 times the rent | $5,000 | 40.0% |
| 3 times the rent | $6,000 | 33.3% |
| 40 times the rent, yearly | $6,667 | 30.0% |
| 3.5 times the rent | $7,000 | 28.6% |
| 4 times the rent | $8,000 | 25.0% |
Only an income of about 3.33 times the rent keeps you at HUD's line. Housing costs include utilities as well as rent, so your real share runs higher. By the Census Bureau's count, 49.7% of U.S. renter households were cost-burdened in 2023.
A landlord's multiple is a screening test, not a budget. The rent calculator works the other way: it caps rent at a share of income you pick, such as 30%.
Why some landlords ask for 40 times the rent
Some landlords state the test as a yearly multiple. In New York City, Columbia University's off-campus housing office tells applicants to earn "approximately 40x the monthly rent."
Forty times a year is 3.33 times a month, matching the HUD row above. A $2,000 apartment then needs $80,000 a year instead of $72,000. Guarantors face a steeper bar there: 80 to 100 times the monthly rent, per the same office. So always ask whether a listing's multiple is monthly or yearly.
What else do landlords check?
Income is only one screen. The Federal Trade Commission's guide for landlords names three kinds of consumer reports:
- Credit reports from credit bureaus such as Equifax, Experian and TransUnion.
- Tenant screening reports on your rental history, drawn from previous landlords or housing court records.
- Background checks that describe criminal history.
Say a report leads a landlord to reject you, or to demand a co-signer, a bigger deposit or higher rent. Then you're owed an adverse action notice naming the company behind the report. You can ask it for a free copy within 60 days and dispute anything wrong.
Using a housing voucher? The multiple applies to your share
In California, an income test may only count the rent you pay yourself. The state's Civil Rights Department says a housing provider is "only permitted to consider the tenant's portion of the rent."
In its example, a tenant paying $500 of a $2,500 rent needs $1,500 a month at 3x, not $7,500. Since January 1, 2024, voucher holders there may show other proof they can pay, instead of a credit history. Elsewhere, ask your local fair housing agency how income tests apply to vouchers.
Short of the multiple?
Ask what the landlord accepts before you pay an application fee. A guarantor or co-signer with a higher income is one route. A larger deposit is another. If a consumer report is why you're asked for one, you're owed that adverse action notice. If you're renting with others, ask whether your incomes are added together or each person must pass alone.
Sources
- HUD User, PD&R Edge: Rental Burdens: Rethinking Affordability Measures
- U.S. Census Bureau, Nearly Half of Renter Households Are Cost-Burdened (September 12, 2024)
- Federal Trade Commission, Using Consumer Reports: What Landlords Need to Know (July 2023)
- California Civil Rights Department, Fair Housing and Source of Income FAQ (January 2024)
- Columbia University Off-Campus Housing Assistance, Leasing FAQ