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Updated 2026-04-20 · Startup & VC · Educational use only ·
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Business Loan Calculator

Monthly payment and total interest for business loan at specified rate and term

Calculate business loan monthly repayment and the cumulative interest paid across the loan's full term at any rate and amortisation length.

What this tool does

This calculator models business loan repayment by computing your monthly payment amount and the total interest charges across the full loan term. You enter the loan amount, annual interest rate, and repayment period in years. The tool then estimates your monthly payment obligation, cumulative interest paid over time, and the total amount you'll repay by loan end. The monthly payment and interest total are driven primarily by the loan amount and annual rate—higher amounts or rates increase both figures—while a longer term spreads payments across more months, typically lowering each payment but raising total interest. A typical scenario involves comparing how different term lengths affect affordability and total cost. The calculator assumes consistent monthly payments and a fixed rate throughout the loan period, and does not account for fees, penalties, early repayment, or changes in circumstances. Results are estimates for illustration purposes.

Quick answer: with the default values, the result is $2,027.64 (Monthly Payment). Adjust the values below for your own figures.


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Formula Used
Loan amount
Monthly rate
Total months

Disclaimer

Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.

Business Loan Payment Calculation

A business loan amortises on the same arithmetic as a consumer one. Each monthly payment covers the interest accrued on the outstanding balance and puts the remainder against the principal, so the interest share is largest at the start and falls as the balance does. This calculator returns the monthly payment, the total interest and the total repaid for a given amount, rate and term, which is what makes two offers on different terms comparable.

Typical Business Loan Terms

Rates and terms vary by product, by lender and by market, and any specific figure dates quickly, so the durable part is the ordering rather than the levels. Secured lending against an identifiable asset, such as equipment finance, tends to price below unsecured lending, because the collateral reduces the lender's loss on a default. Government-backed small-business schemes, where a market runs them, tend to price below comparable commercial lending for the same reason, since a partial public guarantee does that job instead. Revolving facilities such as a line of credit price above term loans for the flexibility. Short-dated products, invoice finance and merchant advances sit at the expensive end, and their cost is often quoted per month or as a flat fee rather than as an annual rate, which makes them look cheaper than they are until converted. Term lengths tend to follow the asset: longer for equipment, shorter for working capital. The figure to enter here is the one a specific lender has quoted, converted to an annual rate.

Worked Example for Typical Business Loan

Loan amount 100,000. Annual rate 8%. Term 5 years. Monthly payment 2,028. Total interest 21,659. Total paid 121,659. Loan pays back principal plus 21.7% in total interest over 5 years. Alternative longer term (10 years) reduces monthly payment to 1,213 but total interest grows to 45,593 — 45% total interest versus 22% on shorter term. Business loan decisions balance cash flow constraints against total interest cost.

What the Calculator Does Not Model

Several costs sit outside the figure. Arrangement or origination fees are charged up front and are often quoted as a percentage of the amount borrowed, which raises the effective cost above the headline rate. Larger facilities can carry closing costs on top. Some products penalise early repayment. Collateral has its own costs, valuation and registration among them, and personal guarantees are common on smaller facilities. Variable-rate loans move with the rate environment, while this calculator holds the rate fixed for the whole term. Where a lender quotes an all-in figure such as an APR, entering that rather than the headline rate gets closer to the real cost.

Business Loan Strategic Use

Different products suit different purposes. Equipment finance is straightforward against a specific asset, and the collateral usually brings the rate down. Working capital lending bridges a cash flow gap but costs more, since there is nothing securing it. Expansion financing is the case where the borrowing has an identifiable source of repayment, in the additional revenue it funds. Emergency financing is typically the most expensive, because it is arranged under time pressure. A line of credit is flexible, though a balance that is never cleared turns a revolving facility into long-term debt at revolving rates. What separates these is whether the borrowing funds something that generates a return or covers a genuine necessity, since that is what has to carry the interest cost.

Example Scenario

Business loan of $100,000 at 8% over 5 years costs $2,027.64 monthly.

Inputs

Loan Amount:$100,000
Annual Rate:8%
Term Years:5 yrs
Expected Result$2,027.64
Expected Result breakdown
Total Interest$21,658.37
Total Paid$121,658.37
Loan Amount$100,000.00
Term5 years

This example uses sample figures for illustration. Adjust the inputs above to match a specific situation and see how the result changes.

Sources & Methodology

Methodology

This calculator uses the standard amortisation formula to compute monthly loan payments. It converts the annual interest rate to a monthly rate, then applies the formula across the total number of monthly periods. The monthly payment amount is held constant throughout the loan term. Total amount paid is calculated by multiplying the monthly payment by the number of months. Total interest owed is derived by subtracting the original loan amount from the total paid. The model assumes a fixed interest rate with no rate changes over the loan term, regular monthly payments with no missed or extra payments, and no fees, prepayment penalties, or additional charges. It does not account for payment holidays, variable rates, compounding frequency variations, or lender-specific terms that may apply to your actual loan agreement. Results are estimates for comparison purposes.

Frequently Asked Questions

What rate will I qualify for?
It depends on the business rather than on a table. A lender will look at trading history, business and personal credit, whether there is collateral, the size and purpose of the facility, and the product type. Secured and government-backed lending tends to price below unsecured commercial lending, and specialist online lenders tend to price above it, in exchange for speed and looser criteria. Rates also move with the wider rate environment, so any figure quoted in an article dates quickly. Several quotes on the same amount and term is the only way to see the spread actually available to a specific business.
How much can I borrow?
It depends on cash flow. A benchmark some lenders use is keeping annual debt service under roughly 25 to 30% of annual cash flow. A 100,000 loan at 8% over 5 years costs about 24,300 a year, which on that benchmark points to somewhere between 81,000 and 97,000 of annual cash flow to service it comfortably. Lenders also commonly require collateral, and personal guarantees on larger facilities.
When is a business loan appropriate?
The purpose tends to decide it more than the rate does. Equipment that generates revenue and expansion with a revenue projection both have an identifiable source of repayment. Working capital during a seasonal dip is more marginal, since the cost lands in a period that is already tight. Borrowing for something that produces no return has to be repaid out of existing margin instead. That is why cheap debt put to unproductive use can still leave a business worse off than expensive debt that pays for itself.
What about government-backed loans?
Many markets run government-backed small-business loan schemes, the SBA 7(a) programme in the United States being one example. They commonly offer rates below comparable commercial lending, higher limits and longer terms, because a partial public guarantee absorbs some of the lender's risk. In exchange they usually require a couple of years of trading history, good credit and specific eligibility criteria, and the application takes longer than a commercial facility. The size of the facility tends to decide whether that longer process pays for itself.

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