Who FHA loans are designed for
FHA loans are popular with first-time buyers and those with a smaller down payment or a less-than-perfect credit history, since FHA guidelines are typically more flexible than conventional loan requirements. This calculator applies commonly used FHA debt-to-income thresholds (31% front-end / 43% back-end) along with FHA mortgage insurance costs to estimate your buying power.
A worked example
On a $300,000 FHA loan, the upfront MIP at 1.75% is $5,250 — typically rolled into the loan rather than paid in cash, bringing the total financed amount to $305,250. Annual MIP around 0.55% of that balance adds roughly $140/month on top of principal, interest, taxes, and insurance. That monthly MIP is the trade-off for the low 3.5% down payment requirement, and this calculator bakes both costs into your estimated buying power.
Credit score and down payment tiers
FHA's minimum down payment depends on credit score: borrowers with a 580+ credit score qualify for the standard 3.5% minimum, while those between 500–579 typically need at least 10% down. Individual lenders can set higher minimum credit score requirements than FHA's own floor, known as "lender overlays," so actual requirements vary by lender.
Comparing FHA to conventional
FHA's lower down payment requirement comes at the cost of mortgage insurance that often lasts the life of the loan (unlike conventional PMI, which can be removed once you reach 20–22% equity). If your credit and down payment already qualify you for a competitive conventional rate, conventional financing can end up cheaper long-term despite the higher down payment. Compare your options with the Home Affordability Calculator (conventional-style) and the PMI Calculator.