Estimates only, not a loan offer. True APR is shown as a nominal APR (monthly rate × 12, the US quoting convention); the effective annual rate compounds it. Business loans are not covered by consumer APR disclosure rules, so lenders are not required to show you either figure.
Enter the loan amount, the note rate, the term and the fees — and say whether the fees are deducted from your proceeds or financed into the balance. The calculator solves for the rate that equates your payment stream to the cash you actually receive: your true APR (nominal), the effective annual rate, your monthly payment, net proceeds, total fees, total interest and total cost of credit. This is the one calculation the other tools in this cluster structurally cannot do: the business loan calculator takes APR as an input; this page produces it as the output, by solving the loan backwards.
General information, not financial advice, and estimates only. Business loans are not covered by consumer APR-disclosure law the way mortgages are — which is precisely why solving the APR yourself, from the fee schedule, is worth doing.
A $50,000 loan · note rate 8% · 36 months · origination 3% ($1,500) + flat fees $500 = $2,000 total fees:
Fees deducted:
Same loan, fees financed: payment $1,629.49, true APR 10.69% — you receive the full $50,000 and repay $52,000 of balance.
The verdict line under the outputs states the spread in plain terms: on the deducted case, fees add ≈2.80 points to your rate. You were quoted 8%; you are paying 10.80% for the use of $48,000. That gap — invisible in the quote, decisive in comparison shopping — is the entire reason this page exists.
The note rate prices interest on the balance, nothing else. The APR prices the whole exchange: you hand over a stream of payments, you receive net proceeds, and the APR is the single rate that makes those two sides equal. Fees raise it because they shrink what you receive (deducted) or grow what you repay (financed) without touching the stated rate. The tool solves it by iteration — testing monthly rates until the payments’ present value matches net proceeds to the cent — and reports the nominal APR (monthly rate × 12, the US quoting convention) as the headline, with the compounded effective annual rate beside it, labelled. The full mechanics of business-loan interest — amortizing, simple, factor and daily-balance methods — are taught on how business loan interest is calculated; this page stays a quote-checker.
In the deducted case your payments are computed on $50,000 but you only received $48,000 — you pay interest-rate prices for money you never held, so the APR lands higher (10.80%). In the financed case you received the full $50,000 and the $2,000 rides in the balance earning 8% interest like the rest; the APR is lower (10.69%) but the payment and total interest are higher, because the balance is. Neither treatment is “wrong” — they are different contracts — but a quote comparison that ignores which one you were offered is meaningless. Check the funding statement: the treatment is whichever one your proceeds line shows.
SBA borrowers meet this math through the guaranty fee: an upfront charge on the guaranteed portion that is either paid at closing or financed — the same deducted/financed fork, inside a government program. The current fee schedule lives on the business loan costs and fees page; run your quote here with that fee in the origination field to see the APR it produces. And one hard boundary: a factor rate is not a rate, and this tool will not pretend otherwise. Factor-priced advances have no APR until a payment schedule is specified; model them in the working capital loan calculator, which prices factor and APR quotes side by side. If the APR you solve here looks far above market, sanity-check it against the average business loan interest rates snapshot before concluding the quote is bad — short terms legitimately produce high APRs from modest fees, which is itself useful to know.
What is the real APR on my business loan? The rate that equates your payments to your net proceeds once fees are counted — on the worked example, 10.80% nominal on an 8% note with $2,000 of fees deducted. Calculator.net labels this output the “real rate (APR)” for the same reason: the note rate alone understates the cost whenever fees exist. Enter your quote above for your figure.
How do origination fees affect APR? They raise it, roughly in proportion to their size relative to the loan and in inverse proportion to the term: $2,000 on $50,000 over 36 months adds about 2.8 points; the same $2,000 over 12 months would add far more, because the fee is spread over a much shorter use of the money. Origination is usually the largest single fee, which is why it has its own field separate from flat charges.
Why is my APR higher than my interest rate? Because the interest rate prices only the balance, while the APR prices the whole transaction — interest plus every fee you pay for the credit. If your loan had zero fees, the two would nearly coincide (the small remaining gap is compounding convention). Every dollar of fees with the payments unchanged forces the solved rate upward; that difference is the fee load made visible.
Estimates only, not financial advice. Sources: IRR-solve methodology after calculator.net’s “Real rate (APR)” business loan calculator; worked-example cross-check against calcduck’s published fee-adjusted APR for this scenario (≈10.8% nominal); fee-explanation framing per hexacalculator. Currency verified 2026-10-23.