This business loan calculator estimates the monthly payment on a fixed rate amortizing loan. Enter principal, annual interest rate, and term in months. The result shows monthly payment plus total paid and total interest over the full term.
Owners use it when comparing term loan offers, sizing equipment finance, or checking whether a payment fits monthly cash flow. For general personal loans with the same PMT math, the loan calculator is a close sibling page.
How the payment is calculated
Monthly rate equals annual rate divided by 100 then by 12. Payment follows the standard amortizing PMT formula on principal, monthly rate, and month count. Total paid is payment times months. Interest is total paid minus principal.
Worked example
Principal $100,000, rate 8 percent, term 60 months. Monthly payment is about $2,027.64.
| Input | Value |
|---|---|
| Principal | $100,000 |
| Rate | 8% |
| Months | 60 |
| Monthly payment | ~$2,027.64 |
How to use the calculator
- Enter the amount you will borrow after fees that are not rolled in, or include rolled fees in principal if that matches the note.
- Enter the nominal annual rate on the loan.
- Enter term months (for example 36, 60, or 84).
- Compare payment to average monthly free cash flow with a buffer.
Fees, APR, and sticker rate
A lower rate with high fees can cost more than a slightly higher rate with low fees. This page focuses on the amortizing payment from rate and principal. For a simple fee inclusive approximation, see the APR calculator on this site.
Planning uses
Run best case and worse case rates. Shorten the term to see higher payments and lower total interest. Lengthen the term to ease cash flow at the cost of more interest. After payment is set, screen returns with the ROI calculator if the loan funds a project with measurable profit.
Common mistakes
- Entering years in the months field
- Ignoring personal guarantees and covenants that affect risk
- Matching payment to peak month revenue instead of a conservative average
- Forgetting balloon structures that this simple PMT model does not represent
Matching loan structure to the asset
Equipment with a five year useful life often pairs with a term near that horizon. Working capital needs may fit shorter revolving tools better than a five year amortizing note. Long amortizations lower the payment but can leave you paying for an asset that is already replaced.
Use this calculator to see payment at 36, 60, and 84 months side by side. Then ask whether the asset or project still produces cash after the last payment month.
Cash flow buffers
A payment that fits an average month can break a seasonal trough. Build a reserve for at least a few payments before you sign. If revenue is lumpy, stress the rate upward and the revenue downward in the same planning session.
Personal guarantees and blanket liens change risk even when the payment looks affordable. Payment math does not measure covenant risk. Read those sections with the same care you give the rate.
Comparing lender term sheets
- Match principal after fees that are financed.
- Match month counts so payment comparisons are fair.
- List fees outside the PMT and decide whether APR style screening is needed.
- Note prepayment penalties that trap you if you refinance early.
When the loan funds a growth project, translate payment into required monthly gross profit. If the project cannot clear payment plus a margin of safety, the rate is not the real problem. The business case is. Pair payment output with ROI style checks so financing and returns stay on the same page.
Revisit the business loan calculator whenever a lender revises rate or term. Small term changes can move payment more than borrowers expect, especially on shorter schedules.
Documentation lenders still ask for
Payment affordability on this calculator does not replace tax returns, bank statements, or accounts receivable aging. Bring those documents in order while you shop rates so a strong payment fit does not stall in underwriting.
If multiple owners guarantee the note, model household level obligations too. A business payment that looks fine can still strain a guarantor who carries a large mortgage and other debts.
Practical review steps
Before you rely on the result, recheck each input against a source document such as a statement, quote, or measurement note. Run one optimistic case and one cautious case so you see how sensitive the answer is. Save the inputs beside the output so you can explain the estimate later without guessing what you typed.
If a related Multicalify tool answers a neighboring question better, open that tool rather than forcing this page to do the wrong job. Clear tool boundaries keep results easier to trust and easier to explain to someone else who was not present when you calculated.
Limitations
Variable rates, interest only periods, and balloons need a different schedule. Confirm the lender amortization method before you sign.