Real Estate

Rent Affordability Calculator

Calculate how much rent you can comfortably afford.

Enter your gross monthly income to calculate a recommended maximum rent budget, using the widely cited 30% rule.

Enter a valid income.

Recommended Max Rent

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Required Annual Income (3x Rent Rule)

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How to Use This Tool

  1. Enter your gross monthly income.
  2. Adjust the rent-to-income target if you prefer a different threshold than the standard 30%.
  3. Click Calculate for your recommended maximum rent.

The 30% Rule

Recommended Max Rent = Gross Monthly Income × 30%

This widely cited guideline suggests spending no more than 30% of your gross monthly income on rent, to maintain enough budget for other essentials, savings, and discretionary spending.

The "40x Rent" Landlord Rule

Many landlords and rental applications use a related rule: requiring annual gross income to be at least 40 times the monthly rent (equivalent to rent being about 2.5% of annual income, slightly stricter than the 30% guideline) as a qualifying threshold.

Why 30% Is a Guideline, Not a Rule

In many high-cost cities, strictly following the 30% rule may be unrealistic, and many renters spend more, adjusting other budget categories accordingly. Conversely, those with significant other financial obligations (debt, dependents) might aim for less than 30% for better financial cushion.

Frequently Asked Questions

Where does the 30% rule come from?

It originated from US federal housing policy, which historically defined "affordable housing" as costing no more than 30% of a household's gross income — it has since become a widely cited general budgeting guideline, though not a strict requirement.

Why do landlords often require income of 40x the rent?

This is a common landlord screening threshold (equivalent to rent at about 2.5% of annual income) used to verify that an applicant has sufficient, stable income to reliably afford the rent alongside other expenses.

This calculator is provided for general informational and estimation purposes only. Results should not be treated as professional financial, tax, legal, medical, or engineering advice. Always verify critical calculations with a qualified professional or official source before making decisions.