Home Affordability Calculator
Estimate how much house you can afford from income, debts, down payment, mortgage terms, taxes, insurance, HOA dues, and editable planning ratios.
Estimate a home price that fits the income, debt, and cost assumptions you choose.
Your budget
Estimated home price: $415,865
- Estimated loan amount
- $335,865
- Total monthly housing
- $2,800.00
- Estimated cash to close
- $92,476
- Monthly gross income remaining
- $6,600.00
What limits this estimate?
The housing ratio is tighter under the selected assumptions, so it controls the modeled maximum housing payment. Compare both displayed budgets, check recurring debts and ownership costs, and remember that a lender may apply different ratios, reserves, credit standards, or program rules.
- Housing-ratio budget
- $2,800.00
- Total-debt budget for housing
- $3,000.00
- Payment budget used
- $2,800.00
- Down payment
- $80,000.00 (19.2%)
- Loan-to-value
- 80.8%
- Housing DTI
- 28.0%
- Total DTI
- 34.0%
- Estimated closing costs
- $12,475.96
- Estimated lifetime interest
- $428,377.62
Planning notes
- This is a planning estimate, not a loan approval or lending limit.
- Lenders use different income, debt, credit, reserve, insurance, tax, and loan-program rules.
- Estimated PMI is included because the calculated loan-to-value ratio is above 80%; actual mortgage-insurance rules and premiums vary.
Estimated monthly payment
$2,800.00 across mortgage and ownership costs
| Principal & interest | $2,122.90 | 76% |
|---|---|---|
| Property tax | $415.87 | 15% |
| Home insurance | $121.29 | 4% |
| PMI | $139.94 | 5% |
Rate sensitivity
Estimated home price using the same income, debts, costs, ratios, and term
| Rate | Estimated home price |
|---|---|
| 5.50% | $445,094 |
| 6.00% | $430,042 |
| 6.50% | $415,865 |
| 7.00% | $402,515 |
| 7.50% | $400,000 |
Loan-term comparison
Same budget, rate, down payment, costs, and planning ratios.
| Term | Estimated home price | Monthly housing |
|---|---|---|
| 15 years | $349,592.79 | $2,800.00 |
| 20 years | $388,282.15 | $2,800.00 |
| 30 years | $415,865.25 | $2,800.00 |
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What does the Home Affordability Calculator calculate?
The Home Affordability Calculator converts the values you enter into a structured estimate using the formulas and assumptions documented on this page. Use the result to compare scenarios, review the calculation details, and identify sensitive inputs. Check the guide and formula sections before using the estimate for an important decision.
Home Affordability Calculator at a Glance
- Estimates a home price from gross income, recurring debts, available down payment and editable planning ratios.
- Includes fixed-rate principal and interest, property tax, homeowners insurance, PMI when modeled and HOA dues.
- Shows the limiting affordability constraint, loan amount, cash to close, debt-to-income ratios and remaining gross income.
- Provides rate and term sensitivity scenarios without presenting the result as a loan approval.
History
Home affordability calculations developed from the same payment tables used to underwrite amortizing mortgages. A lender needed to compare the expected housing payment and other recurring debt with a borrower's income, while a household needed to decide how much of its budget could reasonably go toward housing.
Modern affordability tools add expenses that a principal-and-interest table cannot show, including property taxes, homeowners insurance, mortgage insurance and HOA dues. They can also solve backward from a monthly budget to a possible home price and repeat the calculation at different mortgage rates and terms.
What Does This Home Affordability Calculator Do?
This calculator estimates the highest home price that fits the income, debt, cash, mortgage and ownership-cost assumptions entered by the user. It creates a housing-only payment budget and a total-debt payment budget, then uses the smaller amount. Review the Home Affordability Calculator assumptions before relying on this result for decisions.
A numerical solver searches for the home price whose estimated monthly principal, interest, property tax, insurance, PMI and HOA cost fits that budget. The result also includes estimated cash to close, loan-to-value, housing DTI, total DTI and rate and term comparisons.
Who Should Use It?
Prospective homebuyers can use it before shopping, requesting preapproval or comparing loan terms. It is especially useful when a borrower wants to understand how recurring debt, down payment, local taxes, insurance, PMI, HOA dues or a rate change can affect the planning estimate.
Housing counselors, real estate professionals and financial educators can use the calculation breakdown to explain why a lender's potential approval amount and a comfortable household budget may differ. It is not an underwriting system or commitment to lend.
What Problems Does It Solve?
For “What Problems Does It Solve?,” the Home Affordability Calculator organizes the relevant inputs, applies the documented method, and shows a result that can be compared across scenarios. The points below identify the specific considerations and assumptions users should review before relying on the estimate.
- Price uncertainty: converts a monthly housing budget into an estimated maximum home price.
- Debt visibility: shows when recurring monthly obligations reduce the amount available for housing.
- Incomplete payment estimates: includes tax, insurance, PMI and HOA assumptions instead of principal and interest alone.
- Cash confusion: separates estimated purchase price, loan amount, down payment, closing costs and cash to close.
- Ratio confusion: identifies whether the housing ratio or total-debt ratio controls the result.
- Rate and term uncertainty: recalculates the affordable price while holding the modeled monthly budget constant.
- False precision: keeps key assumptions editable and warns that lending standards and actual costs vary.
Key Benefits
The calculator uses user-entered costs instead of assuming every buyer faces the same property tax, insurance, PMI, HOA or closing-cost rate. This makes the estimate easier to adapt to a location, property type and potential loan offer.
It also shows what limits the answer. A buyer with low recurring debt may be constrained by the selected housing ratio, while a buyer with larger auto, student-loan or credit-card obligations may be constrained by the total-debt ratio.
Home Affordability and Mortgage Definitions
- Gross income
- Income before taxes and payroll deductions, entered annually and converted to a monthly amount.
- Monthly debts
- Recurring obligations used in the total-debt calculation, such as required auto, student-loan and credit-card payments.
- Housing ratio
- The selected share of gross monthly income available for modeled housing costs.
- Total DTI
- Modeled monthly housing cost plus entered monthly debts, divided by gross monthly income.
- Down payment
- Cash applied directly to the purchase price and subtracted when calculating the loan amount.
- Loan-to-value
- The estimated loan amount divided by the estimated home price.
- PMI
- Private mortgage insurance estimated by this model when loan-to-value exceeds 80%, using the rate entered by the user.
- Cash to close
- The entered down payment plus estimated closing costs. Prepaids, escrow deposits and other charges may be additional.
- Limiting constraint
- The smaller of the housing-ratio budget and total-debt budget after recurring debts.
- Loan Estimate
- A standardized lender disclosure showing important loan terms, projected payments and closing costs.
When to Use It
Use the calculator early in the homebuying process, before setting a search price, and again when mortgage rates, income, debt, down payment or local ownership costs change. Run separate scenarios for different property-tax areas, insurance quotes and HOA amounts. Review the Home Affordability Calculator assumptions before relying on this result for decisions.
Use a lower planning ratio when the maximum estimate leaves too little room for taxes, utilities, maintenance, childcare, healthcare, savings or other goals. Compare official Loan Estimates before choosing a mortgage and confirm local ownership expenses before making an offer.
How the Home Affordability Calculation Works
The engine begins with gross monthly income and two editable payment budgets: For a useful Home Affordability Calculator result, enter realistic values, compare relevant scenarios, check the calculation details, and review the definitions, assumptions, and limitations before using the estimate for an important decision.
H is the maximum modeled housing payment, I is gross monthly income, f is the housing ratio, b is the total-debt ratio and D is recurring monthly debt.
For each possible home price, the engine subtracts the down payment, calculates fixed-rate principal and interest, and adds property tax, insurance, PMI when modeled and HOA dues. A binary-search solver finds the highest price whose total monthly cost does not exceed the smaller payment budget.
The calculator then derives loan-to-value, estimated closing costs, cash to close, DTI percentages, remaining gross income and total mortgage interest. See the complete home affordability formula page for variables, solver details and a worked calculation.
Frequently Asked Questions
How much house can I afford?
The estimate depends on gross income, recurring debts, down payment, mortgage rate and term, property taxes, homeowners insurance, mortgage insurance, HOA dues, and the planning ratios you select. It is a budget estimate, not a lender approval. Review the Home Affordability Calculator assumptions before relying on this result for decisions.
What debt payments should I enter?
Enter required monthly obligations such as auto, student, personal-loan, credit-card, alimony, and other recurring debt payments. Do not enter ordinary living expenses in this field. Use realistic inputs and review the Home Affordability Calculator assumptions before relying on this result for decisions.
What is the difference between housing DTI and total DTI?
Housing DTI divides the estimated monthly housing payment by gross monthly income. Total DTI adds recurring monthly debts before dividing by gross monthly income. Use realistic inputs and review the Home Affordability Calculator assumptions before relying on this result for decisions.
Does the result include property taxes and insurance?
Yes. It includes the percentages you enter for property taxes and homeowners insurance, plus HOA dues and estimated PMI when the calculated loan-to-value ratio exceeds 80 percent. Review the Home Affordability Calculator assumptions before relying on this result for decisions.
Are the default 28% and 36% ratios lender limits?
No. They are editable planning assumptions. The CFPB notes that lenders and loan products use different DTI limits, and personal affordability can be lower than an approval amount. Review the Home Affordability Calculator assumptions before relying on this result for decisions.
Why does a lower interest rate increase the estimated home price?
With the same monthly payment budget, a lower fixed rate directs less of each payment to interest, which can support a larger loan. Taxes, insurance, PMI, and HOA costs still reduce the amount available for principal and interest. Review the Home Affordability Calculator assumptions before relying on this result for decisions.
Does cash to close include every upfront charge?
No. It adds the entered down payment and estimated closing-cost percentage. Prepaid interest, escrow deposits, inspections, moving costs, reserves, and other charges may be additional. Use realistic inputs and review the Home Affordability Calculator assumptions before relying on this result for decisions.
One Fun Fact About This Calculator
Adding $1,000 of recurring monthly debt does more than add $1,000 to expenses. In the default scenario, it changes which planning ratio controls the calculation and reduces the housing budget from $2,800 to $2,000 per month.
Conclusion
A useful affordability estimate combines income and debt with the full modeled housing payment and available cash. Review the limiting ratio, monthly payment components, cash to close and remaining gross income together.
Use this calculator to set and stress-test a planning range. Confirm income treatment, debt obligations, credit requirements, reserves, taxes, insurance, mortgage insurance, HOA dues, closing costs and loan-program rules with qualified professionals before purchasing a home.
Home Affordability Calculator Disclaimer
This calculator provides educational estimates, not financial, tax or legal advice, a preapproval, underwriting decision or loan commitment. Actual affordability and approval can differ because of lender rules, credit, reserves, property costs, loan programs and household priorities.