🏢 Business Loan Calculator: Monthly Payment, Interest and Total Cost
By Shihab Mia · Updated 2026-06-30
This business loan calculator gives an estimate for general information only and is not financial advice. It assumes a fixed rate, equal monthly payments and interest compounded once per month. Your real cost depends on the lender's exact terms, fees, day-count method and any variable or balloon structure. Confirm figures with the lender and speak to a qualified adviser before borrowing.
This business loan calculator shows the monthly payment, total interest and true total cost of a commercial or small business term loan in one view. Enter your loan amount, the APR, the term in years and any origination fee, and it returns the fixed monthly payment along with the total interest you will pay, the fee deducted from your disbursement and the net cash you actually receive. Because the origination fee is taken out up front, the calculator separates the amount you borrow from the amount that lands in your account, so you can judge the real price of the financing rather than just the headline rate.
What is the Business Loan Calculator?
A business loan calculator works out the level monthly payment that fully repays a term loan over a fixed period. The method is standard loan amortization: the lender charges interest each month on the outstanding balance, and your fixed payment covers that interest first, with the rest reducing the principal. Early payments are mostly interest and later payments are mostly principal, but the dollar amount you pay stays the same every month. For a $100,000 loan at 9% APR over 5 years, this business loan calculator returns a monthly payment of about $2,075.84 and total interest of about $24,550 across the 60 payments.
The single biggest driver of cost is the combination of APR and term. Raising the rate on that same $100,000 five-year loan from 8% to 10% lifts the monthly payment from about $2,027.64 to about $2,124.70 and adds roughly $5,800 in total interest. Stretching the term has the opposite trade-off: a longer term lowers the monthly payment but raises the total interest. The same $100,000 at 9% costs about $14,479 in interest over 3 years but about $52,011 over 10 years, even though the 10-year payment is far smaller each month. A good business loan calculator lets you test these trade-offs in seconds so you can match the payment to your cash flow without overpaying.
Origination fees are where business borrowing differs most from a simple loan. Many commercial and small business lenders charge an origination fee, often 1% to 6% of the loan amount, and they usually deduct it from the disbursement. That means a $100,000 loan with a 3% fee only puts $97,000 in your account, yet you still repay interest and principal on the full $100,000. This business loan calculator makes that gap explicit by showing both the net funds received and the total cost, which is every monthly payment plus the fee. Comparing total cost rather than rate alone is the only fair way to weigh one offer against another.
Knowing your numbers before you apply also strengthens your position. When you can state the exact monthly payment a given amount and term imply, you can check it against your debt service coverage ratio, the measure most lenders use to decide whether your business income comfortably covers the new payment. Running a few scenarios through a business loan calculator, a shorter term to cut interest, a longer term to protect cash flow, a smaller amount to lower the payment, turns a vague borrowing decision into a concrete, comparable plan.
When to use it
- Estimating the monthly payment on a term loan before you apply, so you know it fits your cash flow.
- Comparing two lender offers by total cost when one has a lower rate but a higher origination fee.
- Seeing how much net cash actually reaches your account after the origination fee is deducted.
- Testing how a shorter or longer term changes the monthly payment and the total interest you pay.
- Checking the payment against your debt service coverage ratio before committing to financing.
- Planning equipment, expansion or working-capital borrowing with a clear picture of the true cost.
How to use the Business Loan Calculator
- Enter the loan amount you want to borrow.
- Enter the interest rate or APR the lender quoted.
- Enter the term in years (the default is 5).
- Enter the origination fee as a percentage, or leave it at 0 if there is none.
- Read off the monthly payment, total interest, fee, net funds received and total cost.
Formula & method
Worked examples
You borrow $100,000 at 9% APR over 5 years with a 2% origination fee.
- Monthly rate r = 9 / 100 / 12 = 0.0075, and number of payments n = 5 x 12 = 60
- (1 + r)^n = 1.0075^60 = 1.565681
- Monthly payment = 100000 x 0.0075 x 1.565681 / (1.565681 - 1) = 2,075.84
- Total interest = 2,075.84 x 60 - 100,000 = 24,550.13
- Origination fee = 100,000 x 2% = 2,000, so net funds received = 100,000 - 2,000 = 98,000
- Total cost = (2,075.84 x 60) + 2,000 = 126,550.13
Result: Monthly payment $2,075.84, total interest $24,550.13, fee $2,000, net funds $98,000, total cost $126,550.13
You borrow $50,000 at 11% APR over 3 years with a 3% origination fee.
- Monthly rate r = 11 / 100 / 12 = 0.0091667, and number of payments n = 3 x 12 = 36
- (1 + r)^n = 1.0091667^36 = 1.388879
- Monthly payment = 50000 x 0.0091667 x 1.388879 / (1.388879 - 1) = 1,636.94
- Total interest = 1,636.94 x 36 - 50,000 = 8,929.69
- Origination fee = 50,000 x 3% = 1,500, so net funds received = 50,000 - 1,500 = 48,500
- Total cost = (1,636.94 x 36) + 1,500 = 60,429.69
Result: Monthly payment $1,636.94, total interest $8,929.69, fee $1,500, net funds $48,500, total cost $60,429.69
Monthly payment and total interest on a $100,000 business loan at 9% APR (no fee)
| Term | Monthly payment | Total interest | Total of payments |
|---|---|---|---|
| 3 years | $3,179.97 | $14,479.04 | $114,479.04 |
| 5 years | $2,075.84 | $24,550.13 | $124,550.13 |
| 7 years | $1,608.91 | $35,148.26 | $135,148.26 |
| 10 years | $1,266.76 | $52,010.93 | $152,010.93 |
Effect of the APR on a $100,000 business loan over 5 years (no fee)
| APR | Monthly payment | Total interest | Total of payments |
|---|---|---|---|
| 8% | $2,027.64 | $21,658.37 | $121,658.37 |
| 9% | $2,075.84 | $24,550.13 | $124,550.13 |
| 10% | $2,124.70 | $27,482.27 | $127,482.27 |
Common mistakes to avoid
- Comparing offers by rate instead of total cost. A lower APR with a high origination fee can cost more than a higher APR with no fee. Always compare the total cost, every payment plus the fee, not the headline rate alone.
- Forgetting the fee reduces the cash you receive. Most lenders deduct the origination fee from the disbursement, so a $100,000 loan with a 3% fee puts only $97,000 in your account while you still repay interest on the full $100,000.
- Choosing the longest term for the lowest payment. A longer term cuts the monthly payment but sharply raises total interest. The same $100,000 at 9% costs about $14,479 in interest over 3 years but about $52,011 over 10 years.
- Confusing the quoted rate with the true APR. If a lender quotes a factor rate or simple interest, it is not the same as an APR. Convert any quote to an annual percentage rate before you enter it, or the payment and interest will be wrong.
Glossary
- Principal
- The loan amount you borrow, before any fee is deducted, and the figure interest is charged on.
- APR
- Annual percentage rate, the yearly cost of the loan as a percentage, divided by 12 to get the monthly rate used in the payment.
- Amortization
- Repaying a loan in equal periodic payments where each payment covers interest first and the rest reduces the principal.
- Origination fee
- A one-time charge, often 1% to 6% of the loan, that many lenders deduct from the amount they pay out.
- Net funds received
- The cash that actually reaches your account, equal to the loan amount minus the origination fee.
- Total cost
- The full price of the loan, equal to every monthly payment added together plus the origination fee.
Frequently asked questions
How is a business loan monthly payment calculated?
A business loan payment uses the amortization formula. Take the monthly rate r (APR divided by 100 then by 12) and the number of payments n (years times 12), then payment = amount x r x (1 + r)^n / ((1 + r)^n - 1). For $100,000 at 9% over 5 years that is about $2,075.84 per month.
Does the origination fee change my monthly payment?
No. The origination fee does not change the monthly payment, because interest and principal are charged on the full loan amount. The fee instead reduces the cash you receive: a $100,000 loan with a 2% fee still has a $2,075.84 payment but only puts $98,000 in your account.
What is a typical business loan origination fee?
Origination fees on business and commercial loans commonly range from about 1% to 6% of the loan amount, and lenders usually deduct the fee from the disbursement. Always confirm the exact percentage, since on a large loan even one extra point is thousands of dollars.
Should I choose a shorter or longer loan term?
A shorter term means higher monthly payments but much less total interest, while a longer term lowers the payment but costs more overall. A $100,000 loan at 9% costs about $14,479 in interest over 3 years versus about $52,011 over 10 years, so pick the shortest term your cash flow can comfortably support.
How much interest will I pay on a $100,000 business loan?
It depends on the rate and term. At 9% APR a $100,000 loan costs about $24,550 in total interest over 5 years, about $35,148 over 7 years and about $52,011 over 10 years. Use the calculator to test your exact rate and term.
Is APR the same as the interest rate on a business loan?
Not always. The interest rate is the cost of borrowing the principal, while the APR can also reflect certain fees, giving a fuller cost picture. Some business lenders quote factor rates or simple interest instead, which must be converted to an APR before comparing offers fairly.
Sources
- Understand business loan terms before you borrow , U.S. Small Business Administration
- What is the difference between a loan's interest rate and the APR? , U.S. Consumer Financial Protection Bureau