About the Rent Affordability Calculator
How much rent can you afford? This calculator answers that from your gross income using three checks renters and landlords actually use: the 30% rule (rent plus utilities at or below 30% of gross monthly income), a debt-to-income limit that leaves room for car, student-loan and card payments, and the “40 times the rent” income requirement many landlords apply to applications.
It is meant for anyone apartment hunting, moving out for the first time, relocating for work or deciding whether to take on a roommate. The recommended rent is the lower of the 30% rule and the debt-based limit, after setting aside your expected utilities, so the number is one you can pay comfortably rather than the most a landlord will approve.
All percentages are based on gross (pre-tax) income, which is how landlords and the 30% guideline measure it. If you have high taxes, large savings goals or dependants, aim for a lower share — the budget planner can confirm the rent fits alongside everything else.
With the default inputs, the recommended maximum rent is $1,250.00. Change any value above to recalculate instantly.
How to use the rent affordability calculator
- 1Enter your gross annual income (and a co-renter’s if applicable).
- 2Add your monthly debt payments and expected utilities.
- 3Keep the 30% rule and 36% debt limit or adjust them to your comfort level.
- 4Pick the income requirement landlords use in your area.
- 5Use the recommended maximum rent as your ceiling when searching listings.
Formula and method
G is gross monthly income (annual ÷ 12). The first limit is the housing-share rule, G × h, where h is usually 30%. The second is a debt-to-income limit: total obligations should stay under G × d (36% by default), so housing can use whatever is left after your existing monthly debts D. The recommended rent is the lower of the two, minus expected utilities U, because the 30% guideline is meant to cover rent and utilities together.
Many landlords require your annual income to be at least k times the monthly rent (commonly 40×, sometimes 3× monthly income). Dividing annual income by k shows the largest rent that would pass that screen, which is often more than is comfortable once debts are included.
- G
- Gross monthly income
- h
- Housing share of income (e.g. 30%)
- d
- Maximum total debt-to-income ratio (e.g. 36%)
- D
- Existing monthly debt payments
- U
- Expected monthly utilities
- k
- Landlord income multiple (e.g. 40)
Worked examples
$60,000 salary with $400 of debt payments
Gross monthly income is $5,000, so 30% is $1,500. The 36% debt limit is $1,800, minus $400 of debt leaves $1,400. Taking the lower figure and setting aside $150 for utilities gives a recommended rent of $1,250 — 25% of gross income. A 40× landlord would approve up to $1,500.
$100,000 income, no debt, utilities included
On $8,333 a month, 30% is $2,500. With no debt, the 36% limit ($3,000) is not binding, so $2,500 is the recommended maximum — exactly what a 40× landlord check allows.
$45,000 income with $600 of debt
The 30% rule would allow $1,125, but 36% of $3,750 is $1,350 and $600 already goes to debt, leaving $750 for housing. After $120 of utilities, a comfortable rent is about $630 — even though a landlord might approve $1,125.
Frequently asked questions
What is the 30% rule for rent?+
The 30% rule says rent plus utilities should not exceed 30% of your gross monthly income. It comes from US housing policy, where households paying more than 30% of income on housing are considered cost-burdened.
What is the 40x rent rule?+
Many landlords and property managers require your gross annual income to be at least 40 times the monthly rent. For a $2,000 apartment that means earning $80,000 a year. Some use 3× monthly income, which is the same as 36×.
Is the 30% rule based on gross or net income?+
Gross (pre-tax) income. If you want a more conservative budget, you can apply 30% to your take-home pay instead, which gives a noticeably lower rent limit.
How do debts affect how much rent I can afford?+
Every dollar you owe on car loans, student loans and cards each month is a dollar not available for rent. Keeping total housing plus debt payments under about 36% of gross income leaves room for savings and everyday costs.
What if I cannot find a place within my budget?+
Consider a roommate, a smaller unit or a neighbourhood further out with good transit. Splitting a two-bedroom often costs much less per person than renting a one-bedroom alone.
Results are estimates for educational purposes and are not financial advice. Rates, fees and terms vary — confirm with your lender or a licensed advisor before making decisions.