Financial / Browser calculator

House Affordability Calculator

House Affordability Calculator works from the inputs you provide and returns estimated affordable price, maximum principal, monthly mortgage allowance. Use the calculation panel to explore a scenario, then check the formula and limitations before applying the result.

Your inputs

Minimum: 0
Minimum: 0 · Maximum: 100
Minimum: 0
Minimum: 0
Minimum: 0 · Maximum: 100
Minimum: 0.08333333333333333 · Maximum: 100

Your results

Enter your values and calculate to see the result.

This estimate is for information and comparison, not financial, investment or tax advice.

Formula and calculation method

Available mortgage payment = monthly income × housing share − recurring housing costs. Borrowing capacity = payment × annuity present-value factor.

User-selected affordability ratio. Does not assess credit, lender approval or local lending rules.

How to use house affordability calculator

  1. Set Gross monthly income. The example below uses 6000.
  2. Set Maximum housing share (%). The example below uses 28.
  3. Set Monthly taxes, insurance and fees. The example below uses 300.
  4. Set Down payment. The example below uses 50000.
  5. Set Annual interest rate (%). The example below uses 6.
  6. Set Mortgage term (years). The example below uses 30.
  7. Select Calculate to update the result. Reset restores the illustrated inputs. Copy, print or download your own result if you need a record.

Worked example

Example inputs
Gross monthly income
6000
Maximum housing share (%)
28
Monthly taxes, insurance and fees
300
Down payment
50000
Annual interest rate (%)
6
Mortgage term (years)
30
Estimated affordable price
280,172.42786142
Maximum principal
230,172.42786142
Monthly mortgage allowance
1380

Factors affecting your result

User-selected affordability ratio. Does not assess credit, lender approval or local lending rules.

Changing gross monthly income changes the scenario being evaluated. Adjust one input at a time when comparing results, keep a copy of the assumptions, and compare values using the same unit and period. A precise arithmetic result does not make an uncertain assumption precise.

Frequently asked questions

How does the house affordability calculator work?

Available mortgage payment = monthly income × housing share − recurring housing costs. Borrowing capacity = payment × annuity present-value factor.

What inputs does House Affordability Calculator need?

Enter gross monthly income, maximum housing share (%), monthly taxes, insurance and fees, down payment, annual interest rate (%), mortgage term (years). Read the unit labels; percentages are entered as ordinary percentages, not decimal fractions.

How should I interpret the house affordability calculator result?

User-selected affordability ratio. Does not assess credit, lender approval or local lending rules.

Are my house affordability calculator inputs uploaded?

No. The calculation runs in this browser. Favorites, recent tool names, theme and formatting preferences may be saved locally, but calculation inputs are not sent to a calculation server or stored by this website. Shared links do not include entered values.

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