How Much House Can We Afford?
Use this affordability calculator to estimate a safe home price based on your income, debt, and housing costs.
Tip: Start conservative. If your payment feels tight on paper, it will usually feel tighter in real life.
What this “how much can we afford” calculator tells you
This calculator helps you estimate the maximum home price your current budget can support. Instead of focusing only on the mortgage payment, it includes common ownership costs like property taxes, insurance, HOA fees, and optional PMI. That makes the estimate more realistic than simple “income times X” rules.
The result is not a loan approval, but it is a strong planning number. Use it to narrow your home search, compare neighborhoods, and avoid the stress of becoming “house poor.”
How the affordability math works
1) Set a monthly payment ceiling
Lenders often evaluate affordability with debt-to-income (DTI) ratios. This tool uses two limits:
- Housing ratio: how much of gross monthly income can go to housing costs.
- Total DTI ratio: housing + other debt payments combined.
Your monthly housing budget is the lower of those two limits. This creates a practical guardrail for buyers who want both lender eligibility and monthly breathing room.
2) Convert payment capacity into purchase price
Once the tool has your monthly housing budget, it works backward to estimate the home price. It subtracts fixed monthly costs, factors in taxes tied to home value, and uses your loan term and interest rate to estimate principal-and-interest payments. Down payment is then added to determine your total purchase power.
Quick interpretation guide
- If your estimated home price is lower than expected, interest rates and debt payments are usually the biggest drivers.
- If your monthly budget looks high but cash to close is low, your down payment may be the limiting factor.
- If PMI is enabled, the estimate becomes more conservative for low-down-payment scenarios.
Ways to improve affordability
Lower your debt before shopping
Paying down credit cards, personal loans, or auto debt can increase your available housing budget quickly, especially if your DTI is close to lending cutoffs.
Increase your down payment
A bigger down payment reduces the financed amount, lowers principal-and-interest payments, and may reduce or eliminate PMI. Even an extra 3–5% down can make a meaningful difference.
Compare taxes and HOA by location
Two similarly priced homes can have very different total monthly costs. Property tax rates and HOA fees vary a lot, and these expenses directly affect affordability.
Stress-test your number
After calculating your maximum, consider shopping below it. Leave room for maintenance, furniture, emergencies, and life changes. A comfortable payment usually beats a maximum payment.
Common mistakes to avoid
- Using net income assumptions with gross-income DTI rules.
- Ignoring insurance, taxes, and HOA costs when comparing homes.
- Forgetting that rates can change your buying power dramatically.
- Targeting lender maximums without testing your real monthly cash flow.
Frequently asked questions
Is this calculator only for first-time buyers?
No. It works for first-time buyers, move-up buyers, and anyone evaluating home affordability.
Should I include PMI?
If you expect to put down less than 20%, including PMI usually gives a more realistic monthly estimate. If you will avoid PMI, set the PMI field to 0.
Does this replace pre-approval?
No. Pre-approval is still essential before making offers. Think of this tool as your planning model, and pre-approval as lender confirmation.
Bottom line
The best affordability number is one that supports your goals without creating financial strain. Use this calculator to define a realistic target price, then shop with confidence and margin.