Rent Affordability Calculator — How Much Rent Can I Afford?

How Rent Affordability Calculator — How Much Rent Can I Afford? works, step by step

1

Enter your monthly take-home income.

2 Download it

Enter your total monthly expenses excluding rent (food, transport, debt, subscriptions, etc).

Rent Affordability Calculator

The classic rule of thumb is to spend no more than 30% of your gross income on rent, but that number ignores whether you already have heavy monthly expenses. This calculator starts from your monthly take-home income, subtracts your real fixed and variable expenses (excluding rent), and works out how much is genuinely left for rent while keeping a safety margin for savings — then compares that adjusted figure against the standard 30% guideline.

The result is the lower of the two numbers: the 30%-of-income guideline and what your actual budget can support after real expenses, adjusted by a cost-of-living factor for your area. That way a low-expense budget in a cheap area isn't capped unnecessarily, and a high-expense budget isn't told it can afford more than it really can.

Key features

How to use it

1. Enter your monthly take-home income.
2. Enter your total monthly expenses excluding rent (food, transport, debt, subscriptions, etc).
3. Set a cost-of-living factor for your area (1.0 = national average).
4. See your safe maximum rent instantly.

Worked example

Example

Income $4,000/month, expenses $1,400/month, cost-of-living factor 1.0 → the 30% guideline says $1,200, and since the expense-adjusted budget ($2,200 left after expenses and a 10% savings buffer) is even higher, the safe recommended rent is capped at the lower number: $1,200. With heavier expenses, say $2,600/month, the expense-adjusted budget drops to $1,000 and becomes the binding, lower number instead.

Who uses this tool

Tips for the best results

• Use your net (take-home) income, not gross, for a realistic number.
• Include irregular but recurring costs (car maintenance, annual subscriptions divided by 12) in your expenses.
• Treat the result as a ceiling, not a target — leaving room below it builds a real savings cushion.

Common mistakes to avoid

• Using gross income instead of take-home pay, which overstates what you can actually afford.
• Forgetting debt payments (student loans, credit cards) when totaling expenses.
• Ignoring the cost-of-living factor when comparing affordability across different cities.

Frequently asked questions