House Affordability Calculator

Estimate the home price you can afford from your income, debts, down payment and mortgage rate.

How house affordability is worked out

This calculator uses the common 28/36 rule to estimate an affordable home price. It caps your housing payment at a share of income and works back to a loan amount, then adds your down payment.

It’s a planning guide — lenders also weigh credit, taxes and insurance.

Using the calculator

  1. Enter your annual income and monthly debts.
  2. Enter your down payment, rate and term.
  3. Read the affordable home price and payment.

Formula reference

max payment ≈ min(28% of income, 36% of income − debts) max loan from payment, + down payment = price

Try it with these numbers

As an example, with a annual gross income of 90,000, the calculator returns a home you can afford of $372,242.72. Underneath, Max monthly payment comes out at $2,100 and Max loan at $332,242.72. Change any field and every figure updates as you type.

Questions people ask about this

What is the 28/36 rule?
Spend no more than 28% of gross monthly income on housing, and no more than 36% on total debt including housing.
Does this include taxes and insurance?
This estimate focuses on principal and interest. Real budgets should leave room for tax, insurance and maintenance.
Is this a pre-approval?
No — it’s a guide. A lender’s pre-approval considers credit, documentation and more.