A USDA loan is the only mainstream mortgage that lets you buy with literally nothing down — and the price of that is a pair of guarantee fees that most payment quotes bury. Take the home this calculator opens with: $280,000, zero down, 6.5% for 30 years. The loan amount is not $280,000. The 1% upfront guarantee fee — $2,800 — is financed into the loan, so you actually borrow $282,800, about 101% of the price. The monthly principal and interest is $1,787.49. On top of that sits the annual guarantee fee, 0.35% of the balance collected monthly, which starts at $82.48 a month. Your real starting payment is $1,869.97 — before property taxes and homeowner's insurance, which are escrowed on top. This page separates the loan into its parts — price, fees, interest — because a USDA loan is a genuinely good deal for the borrowers it fits, and a confusing one for everyone who reads only the zero-down headline.

The two guarantee fees, in plain sight.

USDA loans are made by ordinary approved lenders, but the US Department of Agriculture's Rural Development program guarantees them — if the borrower defaults, the government covers much of the lender's loss. That guarantee is what the fees pay for, and it is why the lender can accept zero down. The upfront fee is 1.00% of the loan amount, charged once. Almost everyone finances it, which is painless month to month — it adds a few dollars to the payment — but it means you start owing more than the home cost, so you begin with slightly negative equity and need prices or payments to work in your favor before a sale would clear the debt. The annual fee is 0.35% of the outstanding balance, divided by 12 and collected monthly, and it runs for the entire life of the loan — paying the balance down does not switch it off early. On the example loan it starts at $82.48 a month. Put a down payment in and both fees shrink with the loan: a $340,000 home with 10% down borrows $306,000, pays a $3,060 upfront fee, and starts with a $90.14 monthly fee inside a $1,993.08 payment. A smaller purchase, $195,000 with nothing down at 6.875%, becomes a $196,950 loan paying $1,351.27 a month, of which $57.44 is the annual fee.

How this calculator handles the annual fee — the honest simplification.

The fee is charged on the balance you actually owe, and the balance falls every month, so the true fee declines slowly over time. This calculator uses the standard simplified approach: it holds the fee at its starting level, calculated on the initial loan amount ($282,800 × 0.35% ÷ 12 = $82.48), so the monthly total it shows is the highest the fee will ever be. The difference matters over a full term. Multiply the starting fee by 360 payments and you get $29,693.99 — but a month-by-month simulation on the declining balance totals about $19,422 of annual fees across the 30 years, with roughly $985 of it in the first year. Neither figure changes your first payment by a cent; the point is that the fee is a shrinking cost, not a fixed one, and any comparison that multiplies the first month's fee by 360 overstates it by about half. If you refinance or sell within the first several years — as most borrowers do — the fees you actually paid are just the early, higher slice of that declining curve.

The interest is the big number, as always.

Zero down means the full price is financed for the full term, and the interest reflects it: on the default loan, $360,695.81 of interest over 30 years — more than the house cost. The term is your lever on that figure. The same $282,800 loan over 20 years raises the principal-and-interest payment to $2,108.48 but cuts the interest to $223,235.40, saving $137,460.41. Even without changing terms, remember what the monthly figure excludes. Taxes and insurance on a $280,000 home are real money collected monthly in escrow, and they belong in your budget even though they are not part of the loan. Judging affordability on the $1,869.97 alone understates the true housing payment by exactly the amount first-time buyers most often forget.

Eligibility: the part no calculator can decide for you.

A USDA loan is restricted twice over, and both restrictions are local. The property must sit inside an eligible area on USDA's official map — broadly rural areas and the fringes of many suburbs, drawn place by place, so two similar towns can fall on opposite sides of the line. And the household must fall under an income limit that is set for each county and each household size, then adjusted by the lender's underwriting. Because those limits are local by design, there is no single national income limit and no universal list of eligible towns — any page that prints one number for the whole country is guessing, so this page deliberately prints none. The reliable check takes a few minutes: enter the property's address in the official USDA eligibility maps and ask an approved lender to run your household's income against your county's current limit. The home must also be your primary residence, and "guaranteed" describes the government's promise to the lender, not a promise that any application is approved — credit, debts and documentation are still underwritten the normal way.

Five years in: what you have actually bought.

The early years of any zero-down loan are mostly rent paid to the lender, and the example loan is no exception. After 60 payments — $107,249 of principal and interest, plus about $4,802 of annual guarantee fees across those five years — the balance has fallen from $282,800 to $264,731.84. Only $18,068.16 of principal is gone; $89,181.15 went to interest. Against a $280,000 home you hold about $15,268 of equity before any price movement — your cushion is thin, which is exactly why USDA underwriting cares about stable income and why this loan pairs best with a home you expect to keep. The smaller example shows the same shape from the borrower's side: on the $195,000 purchase, the first month's interest is $1,128.36 of the $1,293.82 principal-and-interest payment, leaving $165.46 of principal. None of this is an argument against the program — for a household that would otherwise rent for the years a down payment takes to save, owning with thin equity can still be the better road — but it is the honest frame for the decision: a USDA loan buys you time in the market at the price of slow early equity, and the calculator's term and fee lines let you price that trade before you sign.

USDA, FHA or conventional?

The three low-down-payment roads charge for risk in different currencies. USDA charges the lowest fees of the government programs — 1% upfront and 0.35% a year — but restricts who and where. FHA (covered by the FHA loan calculator on this site) accepts down payments as low as 3.5% almost anywhere, and charges 1.75% upfront plus its own annual premium, which for many borrowers also runs for years. VA loans, for eligible service members and veterans, charge a funding fee instead and can also be zero down. A conventional loan with 20% down beats all three on fees — there are none — but demands the cash USDA exists to replace. The honest ordering is: if you have the down payment, conventional wins; if you do not, USDA's fee structure is usually the cheapest of the zero- and low-down options wherever its map and income limits happen to include you. Where they do not, the fees on this page stop mattering and the FHA or VA math takes over — run those calculators with the same price and rate and compare the monthly fee lines, not the headlines.

With the pre-filled defaults — Home Price $280,000, Down Payment 0%, Interest Rate 6.5%, Loan Term 30 years — the USDA Loan Calculator returns Loan Amount Before Fees $280,000.00, Upfront Guarantee Fee (1%, financed) $2,800.00, Total Loan Amount $282,800.00, Monthly Principal & Interest $1,787.49, Monthly Guarantee Fee (starting level) $82.48, Total Monthly Payment (before taxes & insurance) $1,869.97, Total Interest Over the Term $360,695.81. Change any input and those results update instantly, so you can see exactly how each number you enter moves the answer.