What is the business loan calculator — monthly payment, interest & apr?
In short
A $100,000 business loan at 8% for 5 years (60 months) has a monthly payment of approximately $2,028 and total interest of $21,660. A 1% origination fee adds $1,000 upfront.
Calculates monthly payment, total interest, origination fee, and true APR for a business loan, accounting for fees in the APR calculation.
How to use this calculator
- 1Enter the loan amount requested.
- 2Enter the annual interest rate.
- 3Enter the loan term in months.
- 4Enter the origination fee percentage (0 if no fee).
The formula
- P
- — Loan principal
- r
- — Monthly interest rate
- n
- — Months
- F
- — Origination fee
Worked example
The scenario
$100,000 loan, 8% rate, 60 months, 1% origination fee.
The result
Origination fee: $1,000. Net loan: $99,000. Monthly payment: $2,006. Total interest: $21,360. True APR: ~8.4%.
Common use cases
- Compare business loan offers from banks and online lenders.
- Budget monthly cash flow for a new loan.
- Evaluate whether loan costs are justified by expected business returns.
- Compare APR across loans with different fee structures.
Limitations & assumptions
- Assumes fixed interest rate — variable rate loans change over time.
- Does not model prepayment penalties or early payoff savings.
- SBA loans have specific fee structures and guarantee fees not modeled here.
- Business loan underwriting considers revenue, time in business, and credit — this models payment math only.
Frequently asked questions
Disclaimer: KalkWise calculators are provided for general informational and educational purposes only and do not constitute financial, investment, tax, or legal advice. Results are estimates based on the figures you enter and the assumptions described above. Actual outcomes will vary. Consult a qualified professional before making financial decisions.