Can you afford that Portland apartment? This calculator applies the classic 30%-of-income rule to your earnings, then checks the result against Portland’s median rents so you know whether a listing is realistic for your budget.
How it works
The 30% rule caps housing at 30% of gross income. The tool computes your affordable ceiling and, if you enter a target rent, your rent-to-income ratio:
gross_monthly = annual_income / 12 (or the monthly figure you enter)
affordable_rent = gross_monthly * 0.30
ratio = target_rent / gross_monthly
A ratio at or below 0.30 is comfortable; 0.30 to 0.40 is stretched; above 0.40
is cost-burdened. The result is compared to Portland medians — studio ~$1,350,
1-BR ~$1,600, 2-BR ~$1,950.
Example
On $70,000 a year, gross monthly income is about $5,833. Thirty percent is
roughly $1,750, which comfortably covers Portland’s median one-bedroom of
$1,600 and leaves a small cushion.
Notes
Median rents are city-wide estimates; close-in neighborhoods cost more and outer areas less. The 30% rule uses gross income by convention — apply it to take-home pay for a more conservative budget.