Rent Affordability Calculator

Rent is typically the largest fixed monthly expense. Financial experts generally recommend keeping rent within 25-30% of your take-home pay. Exceeding 30% can strain your budget, while going above 35% significantly increases the risk of financial difficulty.

This tool calculates recommended rent at three conservative levels (25%, standard 30%, upper limit 33%) based on your gross or net monthly income. Unlike basic calculators, it accounts for monthly debt obligations like car loans and credit card payments, giving you a more accurate picture of true affordability. It also verifies the 40x annual income rule—a common landlord requirement where your annual income should be at least 40 times your monthly rent.

You can optionally include utilities, internet, and insurance costs (typically ¥15,000/month) to see your actual remaining household budget. Enter your current rent to see what percentage of your income it represents and get an instant health assessment (excellent, good, fair, caution, or over budget). Perfect for apartment hunting, relocation planning, or evaluating a housing cost change."