House Affordability Calculator

Determine how much house you can afford

Estimate affordability based on your household income and existing debt obligations.

Annual Household Income ($)

Monthly Debt Backpay ($)

Debt-to-Income (DTI) Limit

Estimate affordability strictly bounded by a hard monthly housing payment limit.

House Budget ($/Month)

Est. Maintenance Costs (%)

Market Parameters

Down Payment (%)

Interest Rate (%)

Loan Term (Years)

Taxes/yr

Ins./yr

HOA/yr

Max Home Price

Input your parameters to view affordable estimates.

Validation Error

Please provide valid parameters. Check that your current debt does not exceed your affordability maximums.

Understanding Debt-to-Income (DTI) Ratios

In the U.S., conventional, FHA, and other mortgage lenders utilize front-end and back-end ratios to determine risk and validate how much money they are willing to loan you.

Front-End Ratio

Also known as the mortgage-to-income ratio. It is computed by dividing your total monthly housing costs (P&I, Insurance, Taxes, HOA) by your monthly gross income.

Back-End Ratio

This metric includes everything in the front-end ratio dealing with housing costs, stacked together with any accrued recurring monthly debt like car loans, student loans, and credit cards.

Standard Compliance Limits

Lenders actively utilize hard mathematical boundaries constructed around these ratios to qualify conforming applications:

Conventional Loans (28/36 Rule): Households should spend no more than 28% of gross on housing (front), and no more than 36% globally (back).
FHA Loans (31/43 Rule): Allows higher leniency since it acts as a federally insured protective vehicle. Front threshold: 31%. Back threshold: 43%.
VA Loans: Generally evaluates strictly on the back-end metric holding firm at a 41% limit.

Related Tools

Steps to Increase Affordability

If you cannot immediately afford the house you strictly want based on the algorithmic output, consider the following actions to shift the math in your favor:

Reduce systemic debt: Pay off high-yield credit cards and student loans before engaging property markets to drastically plummet your back-end DTI.
Boost your down payment: Paying more upfront radically drops the required loan threshold, decreasing necessary monthly P&I logic checks against your income bounds.
Improve your credit: High-tier FICO scores open doors to dramatically lower interest rates. Decreased rates linearly increase standard purchasing power per-dollar generated.

Key Takeaways

Look Beyond the Payment: Consider property taxes, insurance, and maintenance costs which can add 20-30% to your basic monthly mortgage payment.
The 28/36 Rule: Financial experts often suggest keeping housing costs below 28% of gross income and total debt below 36%.
Down Payment Impact: A larger down payment reduces your loan amount and monthly obligation while potentially eliminating PMI costs.
Current Rates Matter: Even a 1% shift in mortgage rates can significantly change how much house you can afford for the same monthly budget.