--- title: "How to Calculate a Business Loan Payment and Interest | MCC" description: "How a fixed-rate loan payment is calculated, what the first payments really pay, how extra payments help, and what to check in a loan offer." url: "https://mcc-solutionsnj.com/bookkeeping/guides/how-to-calculate-a-business-loan-payment" --- Bookkeeping guide · Updated October 23, 2026 # How to Calculate a Business Loan Payment and Interest Before you borrow, you should know what the loan will cost each month and in total. The payment comes from a standard formula, and the split between principal and interest changes over time. This guide walks through the math with an example and shows what to ask your lender. By [Matthew Coleman](/about), MCC Solutions **Quick answer.** For a fixed-rate loan with equal payments, the monthly payment is the loan amount times the monthly rate, divided by one minus the monthly rate raised to the negative number of payments. The monthly rate is the annual rate divided by twelve. Want this handled for you? Monthly bookkeeping, cleanup and year-end close for small businesses. Start with a free health check of your books. [Free health check](/bookkeeping/health-check)[Get a quote](/bookkeeping/#interest) **Related:** [Closing entries and retained earnings](/bookkeeping/guides/closing-entries-and-retained-earnings) · [Void vs delete a transaction](/bookkeeping/guides/voiding-vs-deleting-transactions) · [NJ 1099 contractor rule (ABC test)](/bookkeeping/guides/nj-independent-contractor-rule-abc-test-2026) **Free tools:** [Early payment discount calculator](/bookkeeping/early-payment-discount-calculator) · [Late payment fee calculator](/bookkeeping/late-payment-fee-calculator) [Try your own numbers in the business loan payment calculator](/bookkeeping/business-loan-payment-calculator) and add an extra payment. [![Intuit ProAdvisor Gold tier badge](/img/credentials/intuit-proadvisor-gold.png)](https://proadvisor.intuit.com/app/accountant/search?searchId=matthew-coleman77)Gold tier in Intuit's ProAdvisor program. [See my Intuit listing](https://proadvisor.intuit.com/app/accountant/search?searchId=matthew-coleman77) Keeping your own books? Tallyfinch does invoices, bank import and reports on your computer. [See Tallyfinch](/bookkeeping/mcc-books-downloadable-bookkeeping-software) ## The payment formula For a fixed-rate loan with equal monthly payments, the payment equals the loan amount times the monthly rate, divided by one minus the monthly rate raised to the negative number of payments. The monthly rate is the annual rate divided by twelve. For a $50,000 loan at 7% over five years, the monthly rate is about 0.583% and there are 60 payments. The payment works out to about $990 a month. Over the five years you pay back roughly $59,400, so the interest is about $9,400. ## Where each payment goes Early payments are mostly interest, because the balance is at its highest. Each month the interest portion is the balance times the monthly rate, and the rest of the payment reduces principal. As the balance drops, interest shrinks and more of each payment goes to principal. This is why paying extra early saves more than paying extra late. A dollar of principal removed early stops accruing interest for the rest of the loan. ## The effect of extra payments An extra $200 a month on the same loan pays it off in about 49 months instead of 60 and saves roughly $1,900 of interest. Check that your lender applies extra payments to principal and that there is no prepayment penalty. If cash is tight, even an occasional extra payment helps. Keep an emergency buffer, since you cannot easily get paid-in principal back. ## What the rate does not show The stated rate is not the whole cost. Origination fees, closing costs, required insurance and a rate that changes with a benchmark can all raise what you pay. Ask the lender for the annual percentage rate and a full schedule of fees. Compare offers on total cost over the term, not only the monthly payment. A lower payment from a longer term often means more interest overall. ## Recording the loan In your books, the loan is a liability. The payment is split: interest is an expense and principal reduces the loan balance. Booking the whole payment as an expense overstates costs and leaves the liability too high. Ask the lender for an amortization schedule and tie your balance to their statement each month. A calculator gives a close estimate, but the lender's schedule is the one that governs. ## Questions to ask the lender Ask what the annual percentage rate is and whether it includes fees. Ask whether the rate is fixed or variable, how often payments are due, whether there is a prepayment penalty, and how late payments are handled. Ask also whether the loan is secured by an asset, whether you personally guarantee it and what covenants apply, such as keeping a minimum balance or sharing financial statements. These terms affect risk as much as the payment does, so get them in writing. ## Common questions **What if my loan rate is variable?** Payments can change when the rate changes. A fixed-rate calculator shows the payment at today's rate only. **Is a longer term better?** It lowers the monthly payment but usually raises total interest. Choose based on cash flow and total cost. **Can I pay a loan off early?** Often yes, but check for prepayment penalties in your loan agreement. This guide is general information, not tax, legal or accounting advice. Rules, fees and due dates change; check with the IRS, the NJ Division of Taxation or a licensed professional for your situation. Let us handle it [### Monthly bookkeeping Categorizing, reconciling and monthly reports, with cleanup, payroll and NJ filings available. Bookkeeping →](/bookkeeping/) [### QuickBooks Online Monthly bookkeeping, cleanup and reconciliation in QuickBooks Online for New Jersey small businesses. Your account stays in your name. QuickBooks →](/bookkeeping/software/quickbooks-online)[### Xero Bookkeeping and reconciliation in Xero for New Jersey small businesses, including cleanup and moving from spreadsheets or another program. Xero →](/bookkeeping/software/xero) More guides - [How to Add or Remove Sales Tax From a Price](/bookkeeping/guides/how-to-add-or-remove-sales-tax-from-a-price) - [Working Capital Explained: Formula, Example and Uses](/bookkeeping/guides/working-capital-explained) - [Current Ratio and Quick Ratio Explained With Examples](/bookkeeping/guides/current-ratio-and-quick-ratio-explained) - [Gross Profit vs Net Profit: What Each One Tells You](/bookkeeping/guides/gross-profit-vs-net-profit-explained) Free tool - [Bookkeeping health check](/bookkeeping/health-check) [All guides](/bookkeeping/guides) Reach small business owners, freelancers and bookkeepers who read this guide: [advertise here](/advertise#bookkeeping). Do it yourself ### Business Finance Ratios Bundle Read your statements, check the ratios a lender looks at, and model where the business could go, in three linked-by-method workbooks. 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