FHA vs Conventional Mortgage Calculator

An FHA loan is a government-backed mortgage insured by the Federal Housing Administration, a division of the U.S. Department of Housing and Urban Development (HUD). Established in 1934 during the Great Depression, the FHA program was created to expand homeownership access for Americans who could not meet the stringent down payment and credit requirements of traditional bank loans.

Today, FHA loans remain one of the most popular financing options for first-time homebuyers, borrowers with lower credit scores (580+), and purchasers who can only afford a small down payment of 3.5%. FHA does not lend money directly; instead, it insures loans made by FHA-approved lenders (banks, credit unions, and mortgage companies), protecting those lenders against borrower default.

The tradeoff for this accessibility is mandatory mortgage insurance. Every FHA borrower pays two forms of mortgage insurance: an Upfront Mortgage Insurance Premium (UFMIP) of 1.75% of the base loan amount (which is typically financed into the loan balance) and an Annual Mortgage Insurance Premium (MIP) paid monthly. For borrowers who put down less than 10%, this annual MIP lasts for the entire 30-year life of the loan, which is one of the most important cost factors to understand when comparing FHA to Conventional financing.

A Conventional mortgage is any home loan that is not insured or guaranteed by a federal government agency (FHA, VA, or USDA). Instead, Conventional loans conform to guidelines established by Fannie Mae and Freddie Mac, the two government-sponsored enterprises (GSEs) that purchase and securitize mortgages in the secondary market. Because these loans are not federally insured, lenders bear more default risk, which is why Conventional loans typically require higher credit scores and larger down payments than FHA loans.

The minimum down payment for a Conventional loan is 3% for first-time buyers(through Fannie Mae's HomeReady® or Freddie Mac's Home Possible® programs) or 5% for repeat buyers. If the borrower puts down less than 20%, the lender requires Private Mortgage Insurance (PMI). Unlike FHA MIP, Conventional PMI automatically cancels once the borrower's loan-to-value (LTV) ratio reaches 78% of the original purchase price, or the borrower can request cancellation at 80% LTV. This is a critical advantage that can save borrowers thousands of dollars over the loan's lifetime.

PMI rates on Conventional loans vary significantly based on the borrower's credit score, down payment percentage, and loan-to-value ratio. A borrower with a 740+ credit score and 10% down may pay a PMI rate as low as 0.25% to 0.50% annually, while a borrower with a 620 score and 3% down could pay 1.35% or more. This credit-sensitive pricing makes Conventional loans highly competitive for borrowers with good to excellent credit.

Mortgage insurance is often the single largest factor determining whether an FHA or Conventional loan is cheaper over time. Let's walk through a concrete example using a $400,000 home purchase with a 3.5% down payment and a 6.5% interest rate:

*PMI rate assumes a 680–739 credit score tier. Borrowers with 740+ credit scores would pay substantially less PMI.

As this comparison illustrates, while the FHA loan starts with a lower monthly MI payment, the fact that FHA MIP never cancels means total mortgage insurance costs over 30 years can be 3–4 times higher than Conventional PMI. For borrowers who plan to stay in their home long-term, this difference is substantial.

However, FHA loans can still win in specific scenarios: borrowers with credit scores below 660 may find that FHA's fixed MIP rate is actually cheaper than the elevated PMI rates charged to lower-credit-score borrowers on Conventional loans. Our calculator above models these credit score–dependent cost differences precisely.

There is no universally "better" loan type — the right choice depends on your specific financial profile, down payment savings, credit score, and how long you plan to own the property. Here is a decision framework based on real cost analysis:

For a detailed walkthrough of every factor, including specific dollar amounts for different home prices and credit scores, see our comprehensive FHA vs Conventional Comparison Guide.

1. Only comparing monthly payments, not total cost. An FHA loan may have a $50 lower monthly payment initially, but the lifetime MIP cost can exceed the Conventional loan's total cost by $30,000–$50,000 or more. Always use our calculator to compare the 5-year and 30-year total cost, not just monthly payments.
2. Not factoring in the FHA Upfront Mortgage Insurance Premium. The 1.75% UFMIP is typically rolled into the loan balance, which means you pay interest on it for 30 years. On a $400,000 home with 3.5% down, the UFMIP adds $6,755 to your loan principal and approximately $8,500+ in additional interest over the loan term.
3. Assuming FHA is always cheaper for low-down-payment buyers. With credit scores above 720, Conventional PMI rates can be as low as 0.30%–0.50% — significantly cheaper than FHA's 0.55% MIP, especially since Conventional PMI cancels.
4. Forgetting to plan an FHA-to-Conventional refinance. Many FHA borrowers could save thousands by refinancing into a Conventional loan once they reach 20% equity and improve their credit score. Learn more in our FHA-to-Conventional Refinance Guide.
5. Ignoring property tax and homeowners insurance variance. Property taxes vary dramatically by state and county — from 0.27% in Hawaii to over 2.2% in New Jersey. These costs affect your total monthly payment identically for both FHA and Conventional loans. Always use accurate local property tax rates when running calculations.

Our calculator uses industry-standard amortization formulas and current 2026 mortgage insurance rate schedules to generate precise, month-by-month cost comparisons. Here is exactly what happens when you enter your numbers:

1. FHA Loan Calculation:We compute the base loan amount (home price minus down payment), add the 1.75% UFMIP to the principal, then calculate the monthly P&I payment using a standard amortization formula. Monthly MIP is applied at 0.55% (for <5% down) or 0.50% (for 5%+ down) of the original loan balance, for the appropriate duration (life of loan or 11 years).
2. Conventional Loan Calculation: We compute the base loan amount without any upfront fee, calculate monthly P&I, then apply a credit-score-tiered PMI rate (ranging from 0.50% for 740+ scores to 1.35% for 580–619 scores). PMI is removed from the calculation once the loan balance reaches 80% of the original home value.
3. Year-by-Year Comparison:We run a full 30-year amortization loop, tracking each month's principal paydown, interest, taxes, insurance, and mortgage insurance. This produces accurate 5-year and 30-year total cost comparisons, plus the stacked bar chart showing how costs evolve over time.

For a complete explanation of the mathematical formulas and data sources behind every number, see our transparent Calculation Methodology page.