FHA loans, insured by the Federal Housing Administration, allow meaningfully looser qualification than conventional loans: a 31% front-end DTI cap (versus 28%) and a 43% back-end cap (versus 36%), plus down payments as low as 3.5% for qualifying borrowers. For buyers whose debt load or down payment savings are the binding constraint, FHA can raise the achievable max price substantially.
That flexibility comes with a specific, ongoing cost: FHA's mortgage insurance premium (MIP), which behaves differently from conventional PMI in a way that matters for long-term budgeting, covered in detail below.
FHA vs conventional: a real side-by-side
On $100,000 income with $500/mo in other debt and a $20,000 down payment, conventional 28/36 caps support roughly $303,000. The identical income, debt, and down payment under FHA's 31/43 caps supports roughly $335,000 — about $32,000, or 10.6%, more home price, purely from the looser DTI caps. The gap is larger for buyers whose back-end ratio is what's currently binding, since FHA's back-end cap (43%) is proportionally much looser than its front-end cap (31%) relative to the conventional 28/36 pairing.
FHA also permits down payments as low as 3.5% (versus the 20% needed to avoid PMI on a conventional loan, or typical 5–10% minimums many conventional lenders prefer), which is often the more decisive factor for first-time buyers who haven't yet saved a large down payment, independent of the DTI caps.
The MIP trade-off: not the same as conventional PMI
Conventional PMI applies only while your loan-to-value is above 80% and, by law (the Homeowners Protection Act), must be automatically cancelled once you reach 78% LTV through scheduled payments, or can be requested for cancellation at 80%. It is, by design, a temporary cost.
FHA's mortgage insurance premium works differently: nearly all FHA loans carry an upfront premium (typically 1.75% of the loan, often financed into the loan itself) plus an ongoing annual premium. For loans with a down payment below 10%, that ongoing MIP usually continues for the entire life of the loan — it does not automatically cancel at 78% or 80% LTV the way conventional PMI does. The only way to remove it in that case is typically to refinance into a conventional loan once you have enough equity. For loans with 10% or more down, MIP does cancel, but only after 11 years — still far longer than the typical timeline for conventional PMI to drop off. Factor this permanent (or near-permanent) cost into your long-term budget, not just the initial affordability comparison.
Frequently asked questions
How much more house can I afford with an FHA loan?
It depends on which DTI ratio is binding for your specific income and debt. If your back-end ratio binds under conventional caps, switching to FHA's 43% back-end cap (versus 36%) can raise your max price substantially — often 10% or more. If your front-end ratio already binds well within conventional limits, the FHA benefit is smaller.
Is FHA MIP removed after 20% equity like conventional PMI?
Not automatically for most FHA loans. For down payments below 10%, FHA's mortgage insurance premium (MIP) typically lasts for the life of the loan. For down payments of 10% or more, it cancels after 11 years — still much longer than conventional PMI, which is required by law to cancel automatically at 78% loan-to-value.
What credit score do I need for an FHA loan?
FHA guidelines allow credit scores as low as 500 (with a 10% down payment) or 580 (with the minimum 3.5% down payment), though individual lenders often set higher minimums of their own. This calculator does not model credit score directly — it estimates DTI-based affordability only; your actual approved rate and terms depend on your specific credit profile.
Is an FHA loan better than a conventional loan?
It depends on your down payment savings, debt load, and how long you plan to keep the loan. FHA is often better for buyers with limited savings or higher debt who need the looser caps and lower down payment minimum. Conventional is often better for buyers who can put 20% down (avoiding mortgage insurance entirely) or who plan to keep the loan long enough that permanent FHA MIP would cost more than temporary conventional PMI.
Worked examples
Worked example 1
FHA 31/43 vs conventional 28/36, same household
$100,000 income, $500/mo other debts, $20,000 down, 6.5% rate — FHA preset.
Max home price
$335,354
Binding constraint
front
PMI
$158/mo
FHA's 31/43 caps land at $335,354 for this household.
Worked example 2
The same household under conventional 28/36
$100,000 income, $500/mo other debts, $20,000 down, 6.5% rate — conventional preset.
Max home price
$303,043
Binding constraint
front
PMI
$142/mo
Under conventional 28/36 caps, the same household reaches only $303,043 at this down payment — FHA's looser caps are what close that gap.
What affects the result
Which DTI ratio is binding
FHA's benefit is largest for back-end-bound borrowers, since its 43% cap is proportionally much looser than its 31% front-end cap.
MIP duration
For down payments under 10%, FHA's MIP typically lasts the life of the loan — a real long-term cost to weigh against the affordability gain.
More questions answered
Can I refinance out of FHA MIP later?
Yes — refinancing into a conventional loan once you have enough equity (typically 20%) removes FHA MIP entirely, replacing it with conventional PMI rules (which then also cancel once you cross 80% loan-to-value again, or immediately if you're already above it). This is the standard way FHA borrowers eliminate MIP before the loan matures.
Model assumptions & disclosures
Not a pre-approval. This calculator estimates your maximum home price using standard debt-to-income (DTI) caps against the income, debts, rate, and down payment you enter. It does not verify income, assets, credit, or employment, and it is not an offer or commitment from any lender. Actual mortgage pre-approval requires full lender verification and may differ from this estimate.
DTI caps are lender-dependent. The 28/36 (conventional) and 31/43 (FHA) caps used as defaults are common industry guidelines, not universal rules. Individual lenders, loan programs, and automated underwriting systems can approve — or require — different ratios based on credit score, cash reserves, loan-to-value, and other compensating factors not modeled here.
Rate, tax, insurance, and PMI are your estimates, not live data. This calculator never fetches a current mortgage rate, your actual local property tax rate, or a real insurance quote. Defaults are reasonable national approximations — enter your own numbers, or figures a lender or insurer has actually quoted you, for an accurate result.
Credit score is not modeled. Your interest rate — which directly drives your monthly payment and therefore your DTI — depends on your credit score and the specific loan program. This calculator assumes whatever rate you enter; it does not estimate what rate you would actually qualify for.
FHA MIP vs conventional PMI. FHA's mortgage insurance premium (MIP) is not the same as conventional PMI. Under the federal Homeowners Protection Act, conventional PMI must automatically terminate once the loan balance is scheduled to reach 78% of the home's original value, per the loan's original amortization schedule, provided payments are current at that time (borrowers can also request cancellation earlier, once the balance reaches 80% of original value, subject to payment-history conditions). FHA MIP applies to nearly all FHA loans regardless of down payment size, and for down payments under 10% it typically continues for the life of the loan rather than cancelling automatically. Factor this difference into any long-term cost comparison between FHA and conventional financing.
Not financial or legal advice. This calculator provides illustrative estimates based on your inputs. It does not account for your complete financial picture, local market conditions, or individual circumstances. Consult a qualified mortgage lender, financial advisor, or housing counselor before making a home-purchase decision.