Calculate This № 04 · Finance
Instrument № 04 - Finance

NYC 40×
Rent Rule

Does your income clear the 40-times threshold landlords use across the five boroughs? Stack incomes from up to six leaseholders.

See the math behind this calculator
Income required
40 × monthly rent

Guarantor typical
80 × monthly rent

Income basis
Gross, annualized
The lease
Incomes
Status -
Required income -
Combined income -
Max qualified rent -
Gap / surplus -

The rule, simply

Across New York City, most landlords screen tenants by a single ratio: your gross annual income should be at least forty times the monthly rent.

For a $3,000-a-month apartment, that means you need $120,000 in gross annual income to qualify on your own. Two leaseholders earning $60,000 each combined hit the same number.

required_income = monthly_rent × 40

Common questions

Is this a law?

No. It’s a screening guideline used by most NYC landlords and management companies, but no statute enforces it. Some buildings use a different multiplier (35×, 45×) or look at debt-to-income ratios. Smaller landlords sometimes ignore it entirely.

What counts as income?

Gross income before taxes, meaning what shows up on the top line of a pay stub, not what hits your bank. Self-employed applicants should use documentable income (tax returns, 1099s, bank deposits).

What about net-effective rent?

Use the gross figure. If a listing advertises “one month free” and a net-effective rent of $2,750 on a 12-month lease, the actual rent is closer to $3,000. Convert: gross = net × lease_months ÷ paid_months.

What if I’m short?

Three common paths: a guarantor at 80× rent, prepaying several months upfront, or finding a building that accepts a different ratio. Companies like Insurent and Rhino offer institutional guarantors for a fee.

Show the working

The rule itself is one multiplication. Everything else is normalising however you’re paid into an annual figure. If any of it looks wrong, it might be. Tell us what we got wrong.

Income annualised hourly × 2080 weekly × 52 bi-weekly × 26 semi-monthly × 24 monthly × 12 annual × 1
Combined household income combined = sum of every tenant's annualised income
What the rule requires required income = monthly rent × 40
What you qualify for maximum rent = combined income ÷ 40 shortfall or surplus = combined − required

Constants used

  • 40 is the multiplier landlords conventionally apply. It’s a market convention, not a law
  • 2080 is the working hours in a year, being 40 hours × 52 weeks

40× is a guideline that individual landlords apply loosely. Guarantors are often held to 80×, and some buildings use 45× or accept a larger deposit instead. Missing the threshold doesn’t automatically disqualify you.