What the 30 percent rule means

The rule says rent should be no more than 30 percent of gross monthly income. For someone earning $6,000 before taxes, that gives a rent estimate of $1,800 per month.

Gross monthly income x 0.30 = 30 percent rent estimate

When the rule is too loose

The rule can overstate affordability when take-home pay is low, debt payments are high, utilities are expensive, or the apartment requires a large deposit. Use the homepage calculator to compare this rule with your monthly cash flow.

When the rule is too strict

Some renters choose a higher share when they have no car payment, low debt, strong savings, or a short-term reason to live in a higher-cost location. That is a personal budget decision, not a guarantee that an application will qualify.