Understanding your business loan cost
The table below outlines common business term loan sources and how their structures typically compare, since the rate and fee a specific business qualifies for depend heavily on the lender type.
| Loan source | Typical structure |
|---|---|
| SBA-guaranteed loans (e.g., 7(a), 504) | Bank-issued, partially guaranteed by the SBA; often lower rates and longer terms with SBA-set fee caps |
| Conventional bank term loan | Rate and fees set by the bank's own underwriting; generally requires strong credit and collateral |
| Online / alternative lender | Faster approval, often higher rates and fees than bank or SBA loans |
| Equipment financing | Loan secured by the equipment purchased, which can lower the rate relative to unsecured financing |
- This calculator assumes a single fixed rate and a level monthly payment for the full term; it does not model variable-rate loans, balloon structures, or interest-only periods sometimes used in commercial lending.
- Origination fees, packaging fees, and closing costs vary substantially by lender and loan program; always confirm the exact fee structure from the lender's own loan documents rather than assuming this calculator's default.
- This is an educational estimate only. It is not a loan offer, a credit decision, or a substitute for a lender's official disclosures.
What is a business loan calculator?
A business loan calculator estimates the fixed periodic payment required to repay a fixed-rate, fixed-term commercial loan in full by the end of its term, along with the total interest that accrues over that term. The U.S. Small Business Administration (SBA) describes term loans of this kind — a lump sum repaid on a set schedule — as one of the most common structures for financing equipment purchases, working capital and business expansion.
Unlike many consumer loans, business loans frequently carry an origination fee, a one-time charge (commonly a percentage of the loan amount) that lenders deduct or add at closing to cover underwriting costs. This calculator treats the origination fee as a separate input so the fee cost is visible on top of the interest cost rather than hidden inside the rate.
Commercial loan terms, rates and fee structures vary widely by lender, loan type (SBA-guaranteed, bank term loan, online lender, equipment financing) and borrower creditworthiness; this calculator computes the mechanical result of the numbers entered and does not represent an offer or approval from any specific lender.
How to use this business loan calculator
- Enter the loan amount (principal) you are borrowing or considering.
- Enter the annual interest rate quoted for the loan.
- Enter the loan term in years.
- Enter the origination fee as a percentage of the loan amount, if the lender charges one — enter 0 if none applies.
- Read the monthly payment, total interest over the full term, the origination fee amount, and the total cost of the loan (interest plus fee).
The formula behind business loan payments
The monthly payment uses the standard amortization formula, which spreads the loan amount and interest evenly across every payment so the balance reaches exactly zero at the end of the term. Total interest is the sum of all payments made minus the original principal borrowed.
The origination fee is calculated separately as a percentage of the loan amount and is added to total interest to produce the total cost of the loan, since a fee-based cost is not reflected in the interest rate itself. For example, a $100,000 loan at 9% annual interest over 5 years produces a monthly payment of $2,075.84 and total interest of $24,550.13, before any origination fee.
Common mistakes
- Ignoring the origination fee when comparing loan offers — a lower rate with a larger upfront fee can cost more overall than a slightly higher rate with a smaller fee, especially on shorter-term loans.
- Assuming the quoted annual rate is the full cost of borrowing; fees, and in some cases required compensating balances or personal guarantees, add cost beyond the interest rate alone.
- Comparing loans with different terms purely on monthly payment — a longer term lowers the payment but usually increases total interest paid over the life of the loan.
- Overlooking that many business loans require collateral or a personal guarantee, which affects the borrower's overall risk exposure beyond what this calculator's payment figures show.
- Treating a pre-qualification estimate as a guaranteed rate; actual approved rates depend on underwriting factors such as credit history, time in business, and cash flow.
Câu hỏi thường gặp
How is a business loan monthly payment calculated?
A business loan's monthly payment is calculated with the standard loan amortization formula, which uses the loan amount, the monthly interest rate (annual rate divided by 12), and the number of monthly payments so the balance is fully repaid by the end of the term. The payment is fixed for the life of the loan when the rate is fixed.
What is an origination fee on a business loan?
An origination fee is a one-time charge, typically a percentage of the loan amount, that a lender charges to cover the cost of underwriting and processing the loan. It is usually deducted from loan proceeds or added to closing costs and is separate from the interest rate, which is why this calculator computes it as its own line item.
What is an SBA loan?
An SBA loan is a loan made by a participating bank or lender that is partially guaranteed by the U.S. Small Business Administration, which reduces the lender's risk and can allow more favorable rates, terms, or down payment requirements than a conventional bank loan for qualifying small businesses.
Does a longer loan term always cost more?
A longer term lowers the monthly payment because the same principal is spread over more payments, but it typically increases total interest paid over the life of the loan because interest accrues on the outstanding balance for a longer period. Comparing total interest, not just the monthly payment, shows the full cost trade-off.
Is this calculator a loan offer or approval?
No. This calculator performs a mathematical amortization calculation based on the numbers entered. It does not represent an offer, pre-qualification, or approval from any lender, and actual loan terms depend on a lender's underwriting of the specific business and borrower.
Tài liệu tham khảo
- U.S. Small Business Administration (SBA). Loans overview and 7(a) loan program guidance. sba.gov.
- Federal Reserve Banks. Small Business Credit Survey (annual report on financing conditions for small businesses). fedsmallbusiness.org.
- Brealey RA, Myers SC, Allen F. Principles of Corporate Finance (13th ed.). McGraw-Hill, 2020. Chapter 2: How to Calculate Present Values.
- Consumer Financial Protection Bureau (CFPB). Small business lending data collection (Section 1071) overview. consumerfinance.gov.