SBA Loan Calculator — 7(a) & 504 Monthly Payment and Total Interest

SBA Loan Calculator — 7(a) and 504 Monthly Payments

Free SBA loan calculator: monthly payment and total interest on a 7(a) loan over 10 to 25 years, plus a 504 calculator that splits your project into the bank loan, CDC portion and down payment.

The point of this calculator is the last line. SBA money takes 30–45 days and pays you back for the wait many times over on a large amount. If the deal genuinely cannot wait, the right move is a bridge with no prepayment penalty and a refinance into the SBA loan — not abandoning the cheap money.

SBA 504 loan calculator: how a 504 project is split

A 504 loan is not one loan. The project — usually a building or long-life equipment — is financed in three pieces: a bank or other lender takes about 50% in first position, a Certified Development Company (CDC) funds up to 40% through an SBA-backed debenture with a fixed rate on a 10, 20 or 25-year term, and you put in at least 10%. The down payment rises to 15% for a business under two years old or a special-purpose property, and to 20% when both apply. Enter your project below to see each piece and the two payments you would actually make.

SBA loan payments at a glance

Monthly principal-and-interest payments at an illustrative 10.5% rate — a round number for comparison, not a quote. SBA 7(a) rates are set by the lender within caps SBA ties to the prime rate, so plug your own offer into the calculator above.

Loan amount	10-year payment	25-year payment	Total interest, 10 years
$150,000	$2,024	$1,416	$92,883
$250,000	$3,373	$2,360	$154,805
$500,000	$6,747	$4,721	$309,610
$1,000,000	$13,493	$9,442	$619,220
$2,000,000	$26,987	$18,884	$1,238,440
$5,000,000	$67,467	$47,209	$3,096,100

7(a) or 504: which number should you calculate?

	SBA 7(a)	SBA 504
Typical use	Working capital, equipment, buying a business, refinancing, real estate	Owner-occupied real estate and long-life equipment only
Maximum	$5 million	CDC portion up to $5 million ($5.5 million for qualifying manufacturing and energy projects); the bank piece sits on top
Terms	Up to 10 years for working capital and most equipment, up to 25 for real estate	10, 20 or 25 years on the CDC portion
Rate	Fixed or variable, capped relative to prime	CDC portion fixed; bank portion set by the bank
Down payment	Set by the lender, often around 10% for acquisitions	10%, 15% or 20% as above

Full comparison: SBA 7(a) vs 504. Who lends where: SBA lending data and loan statistics and the most active SBA lenders. Ready to apply: SBA loans through Goldspur.

Straight answers

SBA Loan Calculator: straight answers

How do I calculate an SBA loan payment?

SBA loans amortize like any fully amortizing loan: payment = amount × monthly rate ÷ (1 − (1 + monthly rate)^−months). Enter your amount, your offered rate and the term above and the calculator does it, including total interest.

What is the monthly payment on a $500,000 SBA loan?

At an illustrative 10.5% rate it is about $6,747 a month over 10 years, or about $4,721 over 25 years. Your real payment depends on the rate your lender offers.

Does this work as an SBA 504 loan calculator?

Yes — use the 504 project split tool on this page. It divides the project into the bank's 50%, the CDC's portion and your down payment, and calculates both monthly payments.

Are SBA fees included?

No. SBA charges an upfront guarantee fee on most 7(a) loans and CDC/SBA fees on 504 debentures; they are commonly financed into the loan. Ask your lender for the fee figure and add it to the amount to see its effect on the payment.

Is Goldspur an SBA lender?

No. Goldspur Capital is a referral partner; applications are placed with ROK Financial and its network of lending partners, who make every credit decision. Applying costs nothing, and nothing on this page is a quote or approval.