Rent Affordability Calculator Online
Find how much rent you can afford from your gross monthly income using the 30% rule, locally in your browser. Estimates only, not financial advice.
The Rent Affordability Calculator runs entirely in your browser. The income and debt figures you enter never leave your device, and results are estimates only — not financial advice.
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About Rent Affordability Calculator
Rent Affordability Calculator estimates how much rent fits your budget by applying the classic 30% rule to your gross monthly income, alongside conservative (25%) and aggressive (35%) comparison tiers. Enter your income, optionally add other recurring monthly debts, and the calculator trims the rent budget so rent plus debts still stays inside your target percentage. It is useful when apartment hunting, comparing listings against a paycheck, or sanity-checking a landlord's income requirement before you apply. Built for renters, roommates splitting a lease, and anyone budgeting for a move. These figures are estimates only, not financial advice — every household's expenses differ. Everything is calculated locally in your browser; your income and debt figures are never uploaded.
Features
- Applies the standard 30% rent-to-income rule to your gross monthly income
- Shows conservative (25%) and aggressive (35%) comparison tiers side by side
- Optionally subtracts other monthly debts so rent plus debts fits the target percentage
- Segmented control to switch the target ratio between 25%, 30% and 35%
- Instant results as you type, formatted as currency with a copyable summary
- Clear validation message for a zero or negative income
- Rent + other debts total shown alongside each tier
- Runs entirely in your browser with no income figures sent anywhere
How to use the Rent Affordability Calculator
- Enter your gross (pre-tax) monthly income
- Optionally enter other recurring monthly debts (cards, auto, student loans)
- Pick a target rent-to-income ratio: 25%, 30% or 35%
- Read the affordable rent figure and compare it against the conservative and aggressive tiers
Example
Input
$5,000/mo income
Output
Affordable rent (30%): $1,500
5000 x 0.30 = 1500, the standard 30% rent rule.
Common errors & troubleshooting
- Result shows $0 for affordable rent. — Your other monthly debts exceed the rent budget at the chosen percentage — lower the debts figure or pick a higher target percentage.
- Entered net (take-home) pay instead of gross income. — The Rent Affordability Calculator expects gross (pre-tax) monthly income, which is what most landlords and the 30% rule use.
- Typed income as an annual salary by mistake. — Divide your annual salary by 12 first, or enter it and mentally note the figure is for the year — the calculator treats the number as a monthly amount.
- Not sure which tier (25%, 30% or 35%) to trust. — 30% is the widely-used baseline; use 25% for a tighter budget with more savings room, or 35% only if other expenses are unusually low.
Frequently asked questions
- What is the Rent Affordability Calculator?
- It is a tool that estimates how much rent you can afford from your gross monthly income using the 30% rule, with conservative (25%) and aggressive (35%) comparison figures shown side by side.
- How does the 30% rent rule work?
- The 30% rule suggests spending no more than 30% of your gross monthly income on rent. The Rent Affordability Calculator multiplies your income by 0.30 (or your chosen percentage) to get the affordable rent figure.
- Does the Rent Affordability Calculator account for other debts?
- Yes. If you enter other monthly debts (cards, auto loans, student loans), the calculator subtracts a share of them from the rent budget so rent plus debts still fits the target percentage of income.
- Should I use gross or net income in the rent calculator?
- Use gross (pre-tax) monthly income. That is the figure landlords and the standard 30% rule are based on, and it is what the calculator expects.
- Is the rent affordability figure financial advice?
- No. The Rent Affordability Calculator produces estimates only, not financial advice. Your actual budget depends on other expenses, savings goals, and local rental market conditions.
- Does the Rent Affordability Calculator upload my income figures?
- No. The calculator runs entirely in your browser. The income, debts, and percentage you enter never leave your device and nothing is uploaded to ArrayKit.
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