Apartment budget reality check
Rent-to-Income Ratio Calculator
Quick answer: This rent-to-income calculator helps renters and apartment hunters see whether monthly rent fits their income before they sign a lease.
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Use this tool to see whether an apartment fits your budget before you sign a lease. It combines rent and other monthly housing costs, compares them to your gross monthly income, and gives you a clear recommendation based on the 30% rule.
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Check your housing ratio instantly
Toggle between monthly income and annual income, then enter rent and related housing costs. The result updates live and shows both your current ratio and a guideline max rent.
Enter your income to see the 30% rule recommendation.
What is the 30% rule and does it still apply?
The 30% rule is a long-used budgeting guideline that says housing costs should stay around 30% of gross income. It is helpful because it gives renters a fast way to compare apartments before they get pulled into a budget that feels manageable on paper but leaves little room for savings, debt payments, groceries, or emergencies.
That said, the rule is not perfect. In many high cost-of-living cities, following it exactly can be unrealistic, especially for renters early in their careers or anyone living close to a major job center. In those markets, the number is often better used as a warning light than as an absolute yes-or-no decision.
The best approach is to treat the 30% rule as a baseline and then layer in your real life. If you have low transportation costs, no debt, and strong savings, you may be able to stretch a bit. If you have student loans, childcare, or irregular income, even 30% might feel too high.
What's included in housing costs?
- Monthly base rent
- Utilities you pay separately
- Parking or garage fees
- Renters insurance premiums
- Required building or amenity charges tied to the apartment
Frequently Asked Questions
Many renters aim to stay at or below 30% of gross income, with under 25% feeling more comfortable. The lower your ratio, the more room you usually have for savings, debt payoff, and day-to-day flexibility.
It still works as a benchmark, but it is harder to follow in expensive markets. In those places, use it as a stress test and then weigh commute costs, roommates, savings goals, and other fixed expenses before deciding.
Yes. If you want the ratio to reflect real affordability, include recurring housing-related costs such as utilities, parking, renters insurance, and other mandatory charges tied to the apartment.
The classic 30% rule uses gross income before taxes. Still, if your paycheck shrinks heavily because of taxes, benefits, or debt, it is smart to sanity-check the apartment against your take-home pay too.