An interactive guide + calculator to find a home that fits your life, not just your lender’s maximum.
This tool combines rules of thumb, lifestyle checks, real calculations, stress tests, and clear visuals so you can set a safe, informed price range.
Educational only. This page does not provide personalized financial, tax, or legal advice.
Buying a home is one of the biggest financial decisions most people will ever make. If you overextend, you can become house poor—owning a nice home on paper, but struggling every month in practice.
Enter your numbers to see a recommended price range, monthly cost, and stress test results.
These rules provide context for the calculator and help you interpret the results.
The classic guideline for safe borrowing:
| Ratio | Formula | Target |
|---|---|---|
| Front-end | (Mortgage + Taxes + Insurance + HOA) / GMI | ≤ 28% |
| Back-end | (Housing + All Debts) / GMI | ≤ 36% |
As a quick filter, many households can comfortably afford a home priced at roughly 2–3× their gross annual income, assuming modest debts and a decent down payment.
Example: $120k income → rough range $240k–$360k, then refined using DTI and ongoing costs.
Saturday test: After paying all bills, can you still enjoy a normal Saturday (coffee, kids’ activities, a meal out)?
Sleep test: When you imagine the payment, do you feel calm or anxious?
Target 3–6 months of essential expenses; more (6–9 months) if income is variable or you’re the sole earner.
Based on your inputs and the 28/36 DTI rule.
Enter your details and click calculate.
Driven by 28/36 DTI limits.
Includes mortgage, taxes, insurance, HOA, maintenance & utilities.
Stress test checks a 20% income drop.
See how your debt-to-income ratio changes under stress.
| Scenario | Income | Total debt (housing + other) | DTI | Status |
|---|---|---|---|---|
| Base | — | — | — | — |
| -20% income | — | — | — | — |
These are the same numbers loaded by the "Load worked example" button.
Expected outcome: safe monthly housing cost around $2,800–$2,900, affordable home price roughly $350k–$420k, true monthly cost near $3,100, and a stress test that reveals risk if income drops 20%.
Goal: Buy a starter home while avoiding being house poor.
Challenges: Student loan payments, childcare costs for a toddler.
Tool usage: Emily inputs her income, student loans, and a cautious maintenance budget. The tool suggests a safe range around $280k–$340k and shows that stretching higher would create risk once childcare and emergencies are factored in.
Goal: Buy their first family home before kids.
Challenges: Student loans and future childcare plans.
Tool usage: The calculator shows an approximate range of $400k–$480k. Stress tests reveal that if one income drops or pauses for childcare, the upper range becomes risky, nudging them toward the lower side of the range.
Goal: Downsize to a smaller condo with predictable costs.
Challenges: HOA fees and increasing medical expenses.
Tool usage: Robert uses the tool with his fixed income. It suggests a safe range of $220k–$260k and highlights how high HOA fees and insurance squeeze his budget, prompting him to compare lower-fee communities.
Goal: Buy a rental property and manage risk.
Challenges: Income volatility, vacancy risk, repair costs.
Tool usage: Priya experiments with price points in the $500k–$600k range, adding extra maintenance and vacancy assumptions. Stress tests show how income dips plus vacancy affect her DTI, helping her choose a more conservative purchase price.
The House Affordability Master Tool is designed to help you understand not just what a lender might approve, but what actually fits your life, goals, and risk tolerance.
Remember: This tool is for education and planning. It does not replace professional advice, nor does it constitute a loan offer, approval, or credit decision.
Use these insights as a starting point, then review your situation with a qualified loan officer or fee-only financial planner before making any final decisions.