Business Finance · Formula v1.0

Business Loan Payment Calculator

Estimate a fixed-rate business loan payment and total interest.

Budget debt service before borrowing. Enter loan amount in dollars, annual interest rate in percent and term in years (9 means 9%). At the worked-example inputs, the monthly payment is $2,413. Compare the monthly payment with the cash flow the loan will generate, not with your total revenue. Lenders often want annual cash flow of at least 1.25 times the annual debt payments, so multiply this payment by twelve and check that ratio. On the example, a $150,000 loan at 9% over seven years costs about $2,413 a month and $52,722 of interest. A longer term lowers the payment and raises the interest. It returns monthly payment, total interest.

FreeNo sign-upInputs stay in-browserCSV exportReviewed August 17, 2026
LAST REVIEWEDAugust 17, 2026Inputs stay in your browser
Live calculation

Enter your numbers

Calculated result
Monthly payment$2,413
Total interest$52,722
Sensitivity check

What if annual interest rate changes?

-10% input$2,345
0% input$2,413
+10% input$2,482
Year-by-year evidence

Amortization schedule

PeriodOpeningPrincipal / contributionInterest / growthEnding
Payment 1$150,000$1,288$1,125$148,712
Payment 12$135,284$1,399$1,015$133,886
Payment 24$117,790$1,530$883$116,260
Payment 36$98,654$1,673$740$96,980
Payment 48$77,723$1,830$583$75,893
Payment 60$54,829$2,002$411$52,826
Payment 72$29,787$2,190$223$27,597
Payment 84$2,395$2,395$18$0.00

Monthly schedules show the first payment, annual checkpoints and the final payment on screen; the CSV contains every calculated row.

Transparent method

The formula

Level payment = P × r(1+r)ⁿ ÷ ((1+r)ⁿ−1); each period interest = balance × r

Worked example

Monthly payment$2,413
Total interest$52,722

Example inputs

Loan amount$150,000
Annual interest rate9.0%
Term7.0 years

How to interpret the result

A term loan turns a lump sum into a fixed payment, and the payment has to be covered by the cash the business actually generates. Borrowing $150,000 at 9 percent over seven years costs about $2,413 a month and about $52,722 in interest, roughly 35 percent of the loan. Lenders look at whether operating income covers the payment with room to spare, so the number to test is your cash flow in a slow month, not an average one.

Before you rely on it

What to check

Divide your monthly operating cash flow by the payment. A ratio well above one leaves room for a bad quarter, and a ratio near one does not.

The common error

Where people go wrong with business loan payment calculator

Counting the loan proceeds as income when planning the payment. The payment is a fixed obligation that continues whatever the business earns.

Sensitivity evidence

How annual interest rate changes the monthly payment

Business Loan Payment Calculator: monthly payment and total interest across a range of annual interest rate, every other input held at the worked-example value.
Annual interest rateMonthly paymentTotal interest
5.0%$2,120$28,087
7.0%$2,264$40,168
9.0%worked example$2,413$52,722
11.0%$2,568$65,743
13.0%$2,729$79,219

Every input, tested

Which input moves the monthly payment most

Business Loan Payment Calculator: monthly payment with each input moved on its own, every other input held at the worked-example value.
InputTested fromToMonthly payment at each endSwing
Term5.0 years9.0 years$3,114 to $2,031$1,082 (45%)
Loan amount$135,000$165,000$2,172 to $2,655$483 (20%)
Annual interest rate7.0%11.0%$2,264 to $2,568$304 (13%)

Two variables at once

Monthly payment by annual interest rate and loan amount

Business Loan Payment Calculator: monthly payment at each combination of annual interest rate (rows) and loan amount (columns).
Annual interest rate \ Loan amount$120,000$150,000$180,000
5.0%$1,696$2,120$2,544
7.0%$1,811$2,264$2,717
9.0%$1,931$2,413$2,896
11.0%$2,055$2,568$3,082
13.0%$2,183$2,729$3,275

Step by step

The worked example, input by input

Worked-example inputs and the results they produce for the business loan payment calculator.
InputValue used
Loan amount$150,000
Annual interest rate9.0%
Term7.0 years
Monthly payment$2,413
Total interest$52,722

Complete evidence

Full amortization schedule

Show all 84 rows
Business Loan Payment Calculator: complete amortization schedule for the worked-example inputs.
PaymentOpening balancePrincipalInterestEnding balance
Payment 1$150,000$1,288$1,125$148,712
Payment 2$148,712$1,298$1,115$147,414
Payment 3$147,414$1,308$1,106$146,106
Payment 4$146,106$1,318$1,096$144,788
Payment 5$144,788$1,327$1,086$143,461
Payment 6$143,461$1,337$1,076$142,123
Payment 7$142,123$1,347$1,066$140,776
Payment 8$140,776$1,358$1,056$139,418
Payment 9$139,418$1,368$1,046$138,051
Payment 10$138,051$1,378$1,035$136,673
Payment 11$136,673$1,388$1,025$135,284
Payment 12$135,284$1,399$1,015$133,886
Payment 13$133,886$1,409$1,004$132,476
Payment 14$132,476$1,420$994$131,057
Payment 15$131,057$1,430$983$129,626
Payment 16$129,626$1,441$972$128,185
Payment 17$128,185$1,452$961$126,733
Payment 18$126,733$1,463$950$125,270
Payment 19$125,270$1,474$940$123,796
Payment 20$123,796$1,485$928$122,312
Payment 21$122,312$1,496$917$120,816
Payment 22$120,816$1,507$906$119,308
Payment 23$119,308$1,519$895$117,790
Payment 24$117,790$1,530$883$116,260
Payment 25$116,260$1,541$872$114,718
Payment 26$114,718$1,553$860$113,165
Payment 27$113,165$1,565$849$111,601
Payment 28$111,601$1,576$837$110,024
Payment 29$110,024$1,588$825$108,436
Payment 30$108,436$1,600$813$106,836
Payment 31$106,836$1,612$801$105,224
Payment 32$105,224$1,624$789$103,600
Payment 33$103,600$1,636$777$101,964
Payment 34$101,964$1,649$765$100,315
Payment 35$100,315$1,661$752$98,654
Payment 36$98,654$1,673$740$96,980
Payment 37$96,980$1,686$727$95,294
Payment 38$95,294$1,699$715$93,596
Payment 39$93,596$1,711$702$91,884
Payment 40$91,884$1,724$689$90,160
Payment 41$90,160$1,737$676$88,423
Payment 42$88,423$1,750$663$86,673
Payment 43$86,673$1,763$650$84,909
Payment 44$84,909$1,777$637$83,133
Payment 45$83,133$1,790$623$81,343
Payment 46$81,343$1,803$610$79,540
Payment 47$79,540$1,817$597$77,723
Payment 48$77,723$1,830$583$75,893
Payment 49$75,893$1,844$569$74,048
Payment 50$74,048$1,858$555$72,190
Payment 51$72,190$1,872$541$70,318
Payment 52$70,318$1,886$527$68,432
Payment 53$68,432$1,900$513$66,532
Payment 54$66,532$1,914$499$64,618
Payment 55$64,618$1,929$485$62,689
Payment 56$62,689$1,943$470$60,746
Payment 57$60,746$1,958$456$58,788
Payment 58$58,788$1,972$441$56,816
Payment 59$56,816$1,987$426$54,829
Payment 60$54,829$2,002$411$52,826
Payment 61$52,826$2,017$396$50,809
Payment 62$50,809$2,032$381$48,777
Payment 63$48,777$2,048$366$46,729
Payment 64$46,729$2,063$350$44,667
Payment 65$44,667$2,078$335$42,588
Payment 66$42,588$2,094$319$40,494
Payment 67$40,494$2,110$304$38,385
Payment 68$38,385$2,125$288$36,259
Payment 69$36,259$2,141$272$34,118
Payment 70$34,118$2,157$256$31,960
Payment 71$31,960$2,174$240$29,787
Payment 72$29,787$2,190$223$27,597
Payment 73$27,597$2,206$207$25,390
Payment 74$25,390$2,223$190$23,167
Payment 75$23,167$2,240$174$20,928
Payment 76$20,928$2,256$157$18,671
Payment 77$18,671$2,273$140$16,398
Payment 78$16,398$2,290$123$14,108
Payment 79$14,108$2,308$106$11,800
Payment 80$11,800$2,325$88$9,475
Payment 81$9,475$2,342$71$7,133
Payment 82$7,133$2,360$53$4,773
Payment 83$4,773$2,378$36$2,395
Payment 84$2,395$2,395$18$0.00

Where the inputs come from

Loan amount is what you borrow, rate is the annual interest rate from the term sheet, and term is the years to repay. Include fees such as SBA guarantee fees or origination charges when you compare offers, since some are financed. Rates depend on the lender, collateral and your credit, and SBA 7(a) loans are usually priced as a spread over the prime rate. Ask for the fully amortizing payment, not an interest-only quote.

When the result stops applying

Business loans often carry personal guarantees, collateral requirements, covenants and prepayment penalties that a payment calculation does not show. Variable rates can change the payment. Some lenders quote factor rates or fees rather than annual rates, so convert them to an APR to compare fairly, especially for merchant cash advances.

What to compare it with

Test coverage with the business DSCR calculator, and compare offers with the loan comparison and APR pages. The equipment lease versus buy calculator applies when the loan buys equipment. The working capital requirement page helps size a line of credit versus a term loan.

People also ask

Frequently asked questions

What is a typical business loan term?

Working capital loans run from months to a few years, equipment loans match the equipment life, and SBA 7(a) loans can run ten years or, for real estate, up to 25.

Do business loans require a personal guarantee?

Most small-business loans do, meaning you are personally liable if the business cannot repay. Ask what collateral and guarantees the lender requires.

Are merchant cash advances loans?

They are purchases of future sales with a factor rate, not loans, and their effective annual cost is often far higher than loan rates, so calculate the APR before accepting.

Common business finance questions

Sources and evidence