What Is an FHA Loan?
An FHA loan is a mortgage insured by the Federal Housing Administration, a government agency under the U.S. Department of Housing and Urban Development (HUD). The FHA does not lend money directly — it insures lenders against losses if a borrower defaults, which allows lenders to offer more favorable terms to buyers who would otherwise not qualify for a conventional mortgage.
Created during the Great Depression in 1934, FHA loans were designed to make homeownership accessible to Americans with modest incomes and savings. Today, they remain one of the most popular mortgage options for first-time buyers and those rebuilding their credit.
Why FHA Loans Are Popular — and When They Cost More
The appeal of an FHA loan is straightforward: you can buy a home with as little as 3.5% down and qualify with a credit score as low as 580. For many buyers, that flexibility is the difference between owning a home now versus waiting years to save a larger down payment.
The catch is Mortgage Insurance Premium (MIP). Unlike conventional loans where private mortgage insurance drops off at 20% equity, FHA annual MIP often lasts the entire loan term if your initial down payment is under 10%. That can cost tens of thousands of dollars over 30 years — money that goes to insurance, not equity.
How the FHA Loan Calculator Works
This calculator uses the standard amortization formula for the principal and interest payment, then layers on every FHA-specific cost to give you the full monthly picture. Here is what each input controls:
Home Price & Down Payment — The base loan amount equals the home price minus your down payment. FHA requires a minimum of 3.5% down for credit scores of 580 or higher.
Upfront MIP (1.75%) — This one-time premium is automatically rolled into your loan balance. On a $300,000 loan, that's $5,250 added to your financed amount immediately.
Annual MIP — Charged monthly as a fraction of your outstanding loan balance. The rate ranges from 0.15% to 0.75% per year depending on loan term, loan size, and LTV ratio. The default 0.55% applies to most 30-year loans with balances under $726,200.
Annual MIP Duration — The calculator handles all four scenarios: life of loan, 11 years, cancellation at 78% LTV, or no annual MIP.
The Amortization Formula
The monthly P&I payment uses the standard amortization formula:
Where L is the total loan amount (base loan + upfront MIP), r is the monthly interest rate (annual rate ÷ 12), and n is the number of monthly payments (loan term in years × 12). This is identical to how your lender calculates your payment.
Understanding Annual MIP Duration Rules
The FHA MIP cancellation rules changed significantly in 2013 for loans originated after June 3, 2013 — which covers virtually all current FHA loans.
For loans with a term greater than 15 years: if your LTV at origination was 90% or less (meaning you put 10% or more down), MIP lasts 11 years. If your LTV exceeded 90% (less than 10% down), MIP lasts the full loan term.
For loans with a term of 15 years or less: if your LTV was 90% or less, annual MIP lasts 11 years. If LTV was 78% or less at origination, no annual MIP is required at all.
Many borrowers refinance into a conventional loan once they reach 20% equity to eliminate MIP entirely. This is worth calculating — the refinancing costs need to be recovered through MIP savings over your expected remaining ownership period.
FHA Loan Limits and Eligibility
FHA loans have county-level limits updated annually by HUD. For 2025, the standard single-family limit is $524,225 in most U.S. counties and $1,209,750 in designated high-cost areas. If the home you're purchasing exceeds your county's FHA limit, you'll need a jumbo or conventional loan instead.
Additional eligibility requirements include: the property must be your primary residence, it must pass an FHA appraisal meeting HUD's Minimum Property Standards, and you'll need a valid Social Security number, lawful U.S. residency, and steady employment history typically spanning at least two years.
FHA Loan vs. Conventional Loan: When Each Makes Sense
If your credit score is below 680 or your down payment is under 10%, an FHA loan almost certainly offers better terms — lower interest rates due to government backing, plus more lenient underwriting. If your score is 700+ and you can put 20% down, a conventional loan wins on long-term cost because you avoid MIP entirely.
The crossover point depends on your specific rate offers, MIP rate, and how long you plan to stay in the home. This calculator lets you model the FHA scenario precisely — then compare that against a conventional loan using our Mortgage Calculator to make the best financial decision for your situation.
Tips for Reducing Your FHA Loan Cost
Even a 0.25% reduction in your interest rate saves thousands over 30 years — shop at least three lenders, as FHA rates vary between institutions. If you can push your down payment to 10% or more, your MIP drops off after 11 years rather than running for 30. Making extra principal payments reduces your balance faster, shortens the loan term, and on the 78% LTV plan, triggers MIP cancellation sooner.
Disclaimer
This calculator provides estimates for informational purposes. FHA MIP rates, loan limits, and eligibility rules are subject to change by HUD. Always obtain a Loan Estimate from your lender and review the official FHA guidelines at HUD.gov before making financing decisions.