One of the first, and most important, questions homebuyers ask is, “What house price can I afford?” While it’s tempting to start browsing listings right away, understanding your true home affordability upfront can save time, reduce stress, and help you shop with confidence.

Home affordability is about more than just your income. Lenders look at your debts, credit profile, down payment, and overall financial picture to determine how much home you can comfortably afford. Let’s break it all down and show you how to estimate your buying power.

What Does “Home Affordability” Really Mean?

Home affordability refers to how much home you can reasonably purchase based on your income, existing debts, and financial obligations without stretching your budget too thin.

It’s important to distinguish between:

• What a lender may approve you for, and

• What you personally feel comfortable paying each month

These two numbers aren’t always the same, which is why understanding the full picture matters.

Use a Home Affordability Calculator

A home affordability calculator is a helpful starting point for estimating your price range. By entering details like your income, monthly debts, down payment, and interest rate, the calculator estimates:

• Your affordable monthly mortgage payment

• A potential home price range

• Estimated taxes and insurance

Try our Mortgage Affordability Calculator to see what home price may fit your budget before you start house hunting.

Keep in mind: calculators provide estimates not loan approvals, but they’re a great planning tool.

Key Factors That Determine How Much House You Can Afford

1. Income

Your gross monthly income (before taxes) is the foundation of affordability. Lenders consider stable, recurring income such as:

• Salary or hourly wages

• Bonuses or commissions (with history)

• Self-employment income

• Additional household income from a co-borrower

The more reliable your income, the more flexibility you may have.

2. Debt-to-Income (DTI) Ratio

Your debt-to-income ratio (DTI) compares your monthly debt payments to your gross monthly income.

DTI formula: Monthly debt payments ÷ Gross monthly income = DTI %

Debt payments include:

• Credit cards

• Auto loans

• Student loans

• Personal loans

• Proposed mortgage payment (principal, interest, taxes, insurance, and HOA fees)

Most lenders prefer a DTI below 43%, though some loan programs allow higher ratios with strong credit or compensating factors.

The 28/36 Rule Explained

A common affordability guideline is the 28/36 rule, which helps estimate a comfortable housing budget.

28% Front-End Ratio

Your housing costs should ideally be no more than 28% of your gross monthly income.

Housing costs include:

• Mortgage principal and interest

• Property taxes

• Homeowners insurance

• HOA fees (if applicable)

36% Back-End Ratio

Your total monthly debt payments should stay below 36% of your income.

While many lenders allow flexibility beyond these numbers, the 28/36 rule is a helpful benchmark for budgeting responsibly.

3. Down Payment

Your down payment impacts:

• Your loan amount

• Your monthly payment

• Whether mortgage insurance is required

While 20% down eliminates private mortgage insurance (PMI) on conventional loans, many buyers purchase homes with less down using programs that allow:

• 3%-5% down for conventional loans

• 3.5% down for FHA loans

• 0% down for VA and USDA loans (for eligible borrowers)

A larger down payment can increase affordability by lowering your monthly costs.

4. Credit Score

Your credit score plays a major role in determining your interest rate, which directly affects how much house you can afford.

Higher credit scores generally mean:

• Lower interest rates

• Lower monthly payments

• Greater purchasing power

Even a small difference in interest rate can significantly change your affordable price range.

5. Interest Rates

Mortgage interest rates fluctuate based on market conditions and individual qualifications. A lower rate can increase affordability, while higher rates may reduce your buying power.

This is why locking in a competitive rate and understanding how rates affect monthly payments is important when determining affordability.

6. Property Taxes, Insurance, and HOA Fees

Your mortgage payment isn’t just the loan itself. Total housing costs often include:

• Property taxes (vary by location)

• Homeowners insurance

• HOA fees (if applicable)

These costs are factored into affordability calculations and your DTI ratio.

What Lenders vs. Buyers Should Consider

Lenders focus on risk and qualification, while buyers should also think about:

• Lifestyle expenses

• Savings goals

• Emergency funds

• Future plans

Just because you can qualify for a certain price doesn’t always mean it’s the right fit for your life.

How to Improve Your Home Affordability

If your desired price range feels just out of reach, you may be able to improve affordability by:

• Paying down existing debt

• Increasing your down payment

• Improving your credit score

• Exploring different loan programs

• Adjusting expectations on home size or location

Small changes can make a meaningful difference.

Get Personalized Guidance from Sirva Mortgage

Every buyer’s financial picture is different.  While affordability calculators and lending guidelines can be helpful, the right mortgage is ultimately one that aligns with your goals and comfort level.  At Sirva Mortgage, we’ll review your income and debts, explain your loan options, and provide a clear pre-approval to help you understand what you may qualify for. 

Connect with Sirva Mortgage today to explore your affordability and take the next step toward buying a home with confidence.