How Much House Can I Afford Calculator
Use this home affordability calculator to estimate how much house you can afford based on your income, monthly debt payments, and down payment. Quickly see your estimated affordable home price and monthly housing budget, including mortgage, taxes, insurance, and HOA dues.
This house affordability calculator is designed for early home-buying planning, not lender approval. It helps you connect your income and financial obligations to a realistic home price estimate before moving on to mortgage quotes or preapproval.
Property tax is entered as an annual rate because the home price is not known in advance. Homeowners insurance is entered as a monthly estimate so you can model a more complete monthly housing payment. If the estimated down payment is below 20%, you can optionally add the calculator's simple benchmark PMI estimate. This is a planning estimate rather than lender-specific PMI pricing.
Results are planning estimates only. This affordability model uses common income and debt ratios, but lender approvals, taxes, insurance, HOA costs, and underwriting rules can vary.
How to use this calculator
- Enter your annual household income before taxes.
- Add your recurring monthly debt payments.
- Include the down payment you expect to have available.
- Choose a planning preset: Conservative (25%/33%), Standard (28%/36%), or Stretch (30%/40%).
- Set the mortgage rate, loan term, property tax rate, monthly insurance, and HOA assumptions you want to test. If the estimated down payment is below 20%, choose whether to include the optional benchmark PMI estimate.
- Review the estimated affordable home price, monthly housing payment, loan amount, and the ratio-based assumptions that drive the result.
This works well for early home search planning, setting a realistic target price, or understanding how debts and down payment size can change the kind of home that may fit your finances.
How it works
This calculator starts with your income, debt payments, down payment, and monthly housing-cost assumptions to estimate a home price that may fit common affordability ratios.
It is designed for planning a home-buying budget before preapproval, so the result focuses on what may fit your finances rather than just what payment comes from a chosen home price.
Simple affordability model
Affordable monthly housing budget = min(selected housing ratio × gross monthly income, selected debt-to-income ratio × gross monthly income − monthly debts)
Main inputs in the estimate
- Gross income
- Annual household income converted into gross monthly income
- Monthly debts
- Recurring debt obligations that reduce how much housing cost may fit your budget
- Housing costs
- Principal and interest, property tax, homeowners insurance, HOA dues, and optional estimated PMI
What the estimate assumes
- The calculator offers Conservative (25/33), Standard (28/36), and Stretch (30/40) planning presets rather than a single affordability ratio.
- Gross income is used for the ratio model, not take-home pay.
- Property tax, homeowners insurance, and HOA dues are included in the monthly housing estimate, and PMI can be added as a simple benchmark estimate below 20% down.
- This is a planning estimate only and not a lender-specific approval model.
Assumptions and limitations
- This calculator offers three simplified planning presets: Conservative uses 25% housing-cost and 33% total debt-to-income assumptions, Standard uses 28% and 36%, and Stretch uses 30% and 40%.
- Gross income is used for the ratio model, not take-home pay.
- Property taxes, insurance, and HOA dues are included as part of estimated monthly housing cost. When enabled and the estimated down payment is below 20%, a simple benchmark PMI estimate is included as well.
- This is a planning estimate only and does not reflect lender-specific approval rules, reserves, credit standards, or loan-program details.
- Real affordability can differ based on taxes, insurance, credit, actual PMI pricing, cash reserves, and underwriting requirements.
Example scenario
Use this example to see how a simple affordability model can translate income and debts into a planning-oriented home price estimate.
- Annual household income:
$110,000 - Monthly debt payments:
$650 - Down payment:
$40,000 - Interest rate:
6.75% - Loan term:
30 years - Property tax rate:
1.2% - Homeowners insurance:
$150/month - HOA:
$75/month - Estimated PMI:
Excluded
With those assumptions, the estimated affordable home price is about $347,463.60.
That implies an estimated loan amount of about $307,463.60 and a total monthly housing payment of about $2,566.67.
Within that monthly estimate, about $1,994.20 goes to principal and interest, $347.46 to property tax, $150 to homeowners insurance, and $75 to HOA dues. Estimated PMI is $0 because it is excluded in this example; enabling the optional benchmark estimate below 20% down would change the result.
This example shows why affordability is not just about the mortgage payment. Income, existing debts, taxes, insurance, HOA, and down payment all influence the home price that may realistically fit your budget.
Frequently asked questions
How do lenders estimate home affordability?
Many lenders look at gross income, housing costs, and total monthly debt obligations using debt-to-income style ratios. This calculator uses a simplified affordability model based on common front-end and back-end ratio assumptions.
Should I use gross income or take-home pay?
Use gross household income before taxes. Affordability models are commonly built from gross monthly income rather than take-home pay.
How do monthly debt payments affect affordability?
Existing debt payments reduce the amount of monthly housing cost that may fit within a common total debt-to-income limit, which can lower the home price estimate.
Does a larger down payment change affordability?
Yes. A larger down payment lowers the estimated loan amount needed for a given home price and can increase the home price that may fit the same monthly housing budget.
Should taxes, insurance, and HOA be included?
Yes. Those costs are part of real monthly homeownership expenses, so they should be included if you want a more useful affordability estimate.
How is this different from a mortgage calculator?
A mortgage calculator starts with a home price or loan amount and estimates the payment. This affordability calculator works the other way around by starting with your finances and estimating a home price.
Is this a lender preapproval?
No. This is a planning estimate only. Real preapproval amounts vary by lender, credit profile, reserves, taxes, insurance, and loan-program rules.
What if the estimate feels too high or too low?
Try adjusting debt payments, rate, taxes, insurance, HOA, or down payment assumptions. Affordability can change meaningfully when any of those inputs move.
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