Home affordability calculator

Enter your monthly income, current debt payments, down payment and the highest debt ratio you accept. The result is an estimate, not a bank approval.

Home affordability calculator

Car, cards… (optional)
Optional
%
years
%
Share of income for all debt payments. Lenders often use 28–43%; choose your own.

Result

249,725.97Indicative price you can afford (loan + down)

Amount you can borrow
219,725.97
Payment left for the mortgage
1,100.00
Interest over the whole loan
110,274.03
This is not an approval: lenders also look at savings, job, credit score and what is left to live on.

Home affordability calculator

Inputs

Monthly income
4000
Other debt payments per month
300
Down payment
30000
Loan rate
3.5
Loan length
25
Highest debt ratio
35

How it is calculated

Payment left = income × debt ratio − other debt payments.

Result

Indicative price you can afford (loan + down)

249,725.97
Amount you can borrow
219,725.97
Payment left for the mortgage
1,100.00
Interest over the whole loan
110,274.03

How it is calculated

  1. Payment left = income × debt ratio − other debt payments.
  2. Amount you can borrow = payment × (1 − (1 + i)^−n) ÷ i, with i = rate ÷ 12 and n = months.
  3. Price = amount borrowed + down payment.

Example

Income 4,000, other debts 300, down 30,000, 3.5% over 25 years and a 35% ratio: 1,100 a month for the mortgage, so 219,725.97 borrowed and a budget of 249,725.97.

Good to know

  • No property tax, insurance, closing costs or mortgage insurance: take them out of the budget.
  • The debt ratio is a setting, not a rule: each lender and country has its own.

Frequently asked questions

What is this tool used for?

Enter your monthly income, current debt payments, down payment and the highest debt ratio you accept. The result is an estimate, not a bank approval.

How is the result calculated?

Payment left = income × debt ratio − other debt payments.

What should I check before using the result?

No property tax, insurance, closing costs or mortgage insurance: take them out of the budget.

Updated October 10, 2026

Indicative result. For an important decision, check with a professional.