FHA Loan Calculator Explained: How FHA Mortgage Costs Work

What is an FHA loan?

An FHA loan is a mortgage insured by the Federal Housing Administration, an agency inside the US Department of Housing and Urban Development. The FHA does not lend money itself. It sells default insurance to private lenders, and that insurance is what lets banks and credit unions originate mortgages with down payments as small as 3.5% and credit scores as low as 580. The FHA loan calculator models the full monthly cost of that arrangement, including the two mortgage-insurance line items that every FHA borrower carries.

The trade you make for the lower down payment and looser credit threshold is mortgage insurance. Every FHA loan pays a 1.75% upfront mortgage insurance premium (UFMIP) at closing, almost always financed into the loan, plus an annual MIP paid in monthly installments. On a 30-year FHA loan with the minimum 3.5% down, the annual MIP runs for the full life of the loan unless the borrower refinances out. That permanent MIP is the single most-quoted reason FHA loans are not always the cheaper option even when they look cheaper at closing.

FHA loans exist to widen the path to homeownership for first-time buyers and households with thin credit files or limited cash reserves. They are not subsidized — the borrower pays for the insurance — but the program lets a lender approve a loan that their conventional underwriting model would decline. About a sixth of US home purchases each year are financed with FHA loans, with concentrations among first-time buyers and in metropolitan markets where price-to-income ratios make a 20% down payment unrealistic.

How an FHA loan payment is calculated

Three formulas drive the monthly number the FHA loan calculator returns. The first sets the loan amount; the second amortizes the loan; the third adds the monthly MIP.

base loan = home price − down payment UFMIP = base loan × 1.75% total loan = base loan + UFMIP monthly P&I = total loan × r / (1 − (1 + r)^−n) where r = annual rate / 12, n = term in months monthly MIP = base loan × annual MIP rate / 12 total monthly payment = monthly P&I + monthly MIP

The UFMIP is the part most calculators outside this one quietly ignore. It is 1.75% of the base loan amount and is collected at closing. In practice, every FHA borrower rolls it into the loan rather than pay it in cash — the lender hands HUD the premium on behalf of the borrower and the loan balance grows by the same amount. That financed UFMIP is then amortized over the full term alongside the rest of the principal, which is why the monthly P&I figure on a true FHA cost calculation is computed against base loan plus UFMIP, not base loan alone.

The annual MIP rate is a small lookup. HUD's Mortgagee Letter 2023-05, effective March 20, 2023, set the schedule that applies to nearly every owner-occupied FHA loan written today. On a 30-year (or other > 15-year) loan with a base loan up to $726,200, annual MIP is 0.55% when LTV is above 95% and 0.50% when LTV is 95% or below. On a 15-year-or-shorter term, annual MIP is 0.40% above 90% LTV and 0.15% at or below. Higher base loan amounts and certain Hawaii, Alaska, and US Virgin Islands special-area limits use slightly different tables; the calculator uses the standard schedule and is accurate for the vast majority of FHA originations.

Property taxes, homeowners insurance, and HOA dues are not in the formula above. They are real cash you will pay every month, but they are independent of the FHA loan structure and differ by county and property. The number the FHA loan calculator returns is the financed portion only — principal, interest, and monthly MIP. To estimate the full PITI (principal, interest, taxes, insurance), add an escrow estimate for the property-specific items separately.

Worked example

Buy a $350,000 home with the minimum 3.5% down at a 6.5% APR on a 30-year FHA loan. The arithmetic works out as follows.

home price            = $350,000 down payment (3.5%)   = $12,250 base loan             = $337,750 UFMIP (1.75%)         = $5,911 (financed) total loan            = $343,661 LTV                   = 96.5%   → annual MIP 0.55% monthly P&I (6.5%, 360 mo) = $2,172 monthly MIP           = $337,750 × 0.55% / 12 = $155 total monthly payment = $2,327

On the same purchase, a conventional 5%-down loan at the same rate has a smaller base loan ($332,500) and no UFMIP, with monthly P&I around $2,101. Private mortgage insurance on that conventional loan runs roughly 0.5% per year at a 95% LTV, adding around $139 per month — call it $2,240 all in. The FHA payment is about $87 a month higher, but the conventional version requires $5,250 more cash at closing and a credit score in the high 600s. That is the trade FHA borrowers are buying. Run your own numbers through the FHA loan calculator alongside the mortgage repayment calculator to see how the gap moves with rate, term, and price.

The longer-run cost is where FHA mortgage insurance bites. On the example above, the borrower pays $155 a month in MIP for the full 360 months — about $55,800 in mortgage insurance over the life of the loan, plus the $5,911 UFMIP financed at 6.5%. Conventional PMI typically falls off automatically at 78% LTV (around year 11 to 13 with normal amortization and home-price growth). For an FHA loan with a 3.5% down payment, MIP does not drop off at all — it runs to the end of the term or until the borrower refinances out, whichever comes first.

Factors that affect FHA loan costs

Down payment size and LTV

FHA requires 3.5% down with a credit score of 580 or higher, and 10% down with a score of 500 to 579. A 10% down payment also pushes LTV to 90% at origination, which under the post-2013 rules causes annual MIP to drop off automatically after 11 years rather than run for the full term. That difference is worth tens of thousands of dollars over a normal hold period and is the single most underweighted consideration in the FHA-versus-conventional comparison.

Term length

FHA offers 15-, 20-, 25-, and 30-year terms. The headline monthly payment falls with longer terms but total interest rises sharply. A 15-year term also carries materially lower annual MIP — 0.15% at 90% LTV or below compared with 0.55% for the typical 30-year case — which makes a 15-year FHA loan unusually competitive against conventional 15-year financing for borrowers with the cash flow to support the higher monthly payment. Model both terms in the FHA loan calculator before locking in.

Interest rate and credit score

FHA rates are set by the lender, not HUD. Because the FHA insurance protects the lender against default, FHA loans often quote a slightly lower rate than conventional for the same credit profile — particularly in the 580 to 660 FICO range where conventional pricing penalizes credit-sensitive borrowers heavily. Above a 720 FICO, conventional pricing usually wins the rate comparison even before factoring in PMI versus MIP.

FHA loan limits

Loan amounts above the county limit cannot be insured by FHA and must be financed as conventional or jumbo. For 2026, the FHA "floor" for low-cost areas is $498,257 for a single-family home and the "ceiling" for high-cost areas is $1,149,825. Alaska, Hawaii, Guam, and the US Virgin Islands have higher special-area limits. The exact limit for a given county is published on HUD's FHA Mortgage Limits search tool and is the first thing to confirm before assuming an FHA loan is available on a particular purchase.

Property eligibility

Not every property qualifies. FHA loans require the home to be owner-occupied as the primary residence, to pass an FHA appraisal that flags habitability defects, and to fall within program limits on multi-unit properties (one to four units, with the buyer occupying one unit). Condo developments must be on the FHA-approved condominium list or qualify under the single-unit approval process. A property that fails the FHA appraisal for peeling paint, an unsafe handrail, or active roof leaks will not close until the seller (or buyer, by negotiation) repairs the deficiency.

How to reduce FHA loan costs

• Put 10% down if you can. A 90% LTV at origination triggers the automatic MIP drop-off at year 11, saving roughly twenty years of annual MIP on a 30-year loan. Compare the upfront cash trade with the long-run MIP savings in the FHA loan calculator before defaulting to the minimum 3.5% down.
• Refinance to conventional once you hit 80% LTV. Once your home equity reaches 20% (through principal payments, appreciation, or a combination), the cost of MIP often exceeds the cost of a conventional refinance even at a slightly higher rate. Run the trade in the refinance calculator when LTV crosses 80%.
• Consider a 15-year FHA term. Annual MIP drops from 0.55% to 0.15% on a 15-year FHA at 90% LTV or below, and the interest rate is typically 0.5 to 0.75 percentage points lower than a 30-year. The headline monthly payment is higher but total cost of credit is dramatically less.
• Use a streamline refinance. FHA-to-FHA streamline refinances do not require a new appraisal or income verification and can lower the rate without paying the UFMIP a second time at full freight (only the unused portion of the prior UFMIP gets refunded but there is no new 1.75% charge on top of the refinanced balance under most circumstances).
• Lock the rate when it is dropping. FHA 30-year rates track the conventional 30-year closely but lag at turning points. A locked rate at application protects the borrower if rates spike between application and closing, which on a $350,000 loan is the difference of tens of thousands of dollars over the life of the loan.
• Lower DTI before applying. FHA allows back-end DTI up to 43% under automated underwriting and as high as 56.9% with strong compensating factors, but the rate sheet is materially better at the lower ratios. Use the debt-to-income calculator to confirm where you land before the lender pulls credit.

Common mistakes

Ignoring the UFMIP in cost comparisons

The 1.75% upfront premium adds nearly $6,000 to the financed balance on a $350,000 purchase. A side-by-side FHA-versus-conventional comparison that uses only the down payment and the headline rate will systematically understate the FHA total cost. The FHA loan calculator bakes the UFMIP into the amortization base; generic mortgage calculators do not.

Assuming MIP drops off after 11 years

The 11-year MIP drop-off applies only to FHA loans with an LTV of 90% or below at origination. For a 3.5%-down purchase, LTV at origination is 96.5% and MIP runs for the full term. A lot of online guidance conflates the FHA rule with the conventional PMI rule (which does drop off automatically at 78% LTV) — the rules are different and the difference compounds over twenty years.

Trying to finance an investment property

FHA loans are owner-occupied only. A buyer who plans to purchase, hold for a year, and rent out is on safe ground because the occupancy requirement is twelve months. A buyer whose intent at origination is to rent immediately is making a false statement on the loan application, which is mortgage fraud. Investment properties need conventional, hard-money, or portfolio financing — not FHA.

Picking the FHA loan because it is "easier"

Cheaper-at-closing is not the same as cheaper-over-time. For borrowers with a 700+ FICO and 5%+ down, a conventional loan with PMI usually beats FHA on lifetime cost, and the PMI drops off automatically. The FHA program is genuinely useful at low FICOs or with thin reserves, but the marketing message sometimes oversells it. Compare both paths through the FHA loan calculator and the mortgage repayment calculator before committing.

When to seek professional advice

The calculator is a directional check, not loan advice. A licensed loan officer should walk through the comparison before you sign anything, particularly if you are close to a program threshold (a 579 FICO trying to look like 580, a purchase price grazing the county FHA loan limit, or a DTI edging into the high-43%-to-50% band that requires manual underwriting). Borrowers with self-employment income, complex W-2 structures with significant bonus or RSU components, or recent gaps in employment should request a pre-application underwriting review rather than rely on the calculator alone. HUD-approved housing counselors offer free FHA-specific counseling and are the right escalation when the question is whether the loan fits the household's broader financial picture rather than what the monthly payment will be.

Frequently asked questions

What is an FHA loan?

An FHA loan is a mortgage insured by the Federal Housing Administration. The FHA insures the lender against borrower default, which lets the lender offer lower down payments (as low as 3.5%) and looser credit minimums (580 FICO for 3.5% down, 500 to 579 for 10% down) than a conventional mortgage. In return, the borrower pays a 1.75% upfront mortgage insurance premium and an annual MIP charged monthly.

How much is FHA mortgage insurance?

UFMIP is 1.75% of the base loan, financed into the loan. Annual MIP follows the HUD Mortgagee Letter 2023-05 schedule. On base loans up to $726,200 with a term longer than 15 years, annual MIP is 0.55% above 95% LTV and 0.50% at or below. On 15-year-or-shorter terms, annual MIP is 0.40% above 90% LTV and 0.15% at or below.

How long do I pay FHA MIP?

For loans originated after June 3, 2013 with LTV above 90% at origination, MIP runs for the full term. With LTV at origination of 90% or below, MIP drops off after 11 years. The 3.5%-down case (96.5% LTV) means MIP runs for the full 30 years on a typical purchase — refinancing into a conventional loan once equity reaches 20% is the practical exit.

FHA vs conventional — which is cheaper?

FHA is usually cheaper at closing and competitive in monthly payment when credit is in the 580 to 680 band or when down payment is below 5%. Conventional is usually cheaper over the life of the loan when credit is 720+ and down payment is 10% or more, mostly because conventional PMI drops off automatically at 78% LTV whereas FHA MIP does not on a 3.5%-down loan.

What are the 2026 FHA loan limits?

The 2026 FHA floor for low-cost areas is $498,257 for a single-family home and the ceiling for high-cost areas is $1,149,825. Alaska, Hawaii, Guam, and the US Virgin Islands have higher special-area limits. HUD publishes the exact per-county limit through its FHA Mortgage Limits search tool.

Does the calculator include taxes, insurance, and HOA?

No — the figure shown is principal + interest + monthly MIP only. Property taxes vary 0.3% to 2.5% of home value annually depending on state and county, homeowners insurance typically runs $100 to $250 a month, and HOA dues range from $25 to $500+ a month where applicable. Add an escrow estimate to get the full PITI payment.

Can I use an FHA loan for a second home or investment property?

No. FHA loans are owner-occupied only — the borrower must occupy the property as their primary residence within 60 days of closing and for at least one year afterward. Multi-unit purchases (up to four units) are allowed if the borrower lives in one unit. Pure investment purchases need conventional, portfolio, or hard-money financing.

What credit score do I need for an FHA loan?

HUD's program rules allow 580 FICO with 3.5% down and 500 to 579 with 10% down. Individual lenders impose overlays that often push the practical minimum to 620 or 640. Borrowers between the program minimum and a lender's overlay should shop multiple FHA lenders rather than assume the first decline is final.

Model your specific purchase in the FHA loan calculator, stress-test the trade with the mortgage repayment calculator for a conventional comparison, and check what you can comfortably afford with the mortgage affordability calculator and the debt-to-income calculator before locking in.