What it means
Commercial loans come in a few recognisable shapes. A term loan advances a lump sum repaid in instalments over a set period; a revolving facility works like a business overdraft that can be drawn and repaid repeatedly; equipment finance is secured on the specific asset it funds; and commercial mortgages fund property over much longer terms.
Matching the loan to the purpose is the first discipline. Funding a ten year building with a three year loan creates a refinancing cliff, while funding three months of stock with a ten year loan means paying interest long after the stock has sold.
The sensible rule is that the repayment period should roughly track the life of whatever the money buys. Lenders assess a request in a predictable order.
They test whether cash flow can cover the payments, usually through a debt service coverage ratio, then look at what security is available, then at the owner's experience and credit history. A ratio of at least 1.25 is a common threshold, meaning operating cash flow needs to be a quarter larger than the annual loan payments.
The conditions attached matter as much as the rate. Covenants might require a minimum coverage ratio, a maximum debt to earnings multiple, or regular management accounts, and breaching one can make the whole balance repayable even if every payment has been made.
Personal guarantees are also standard for smaller businesses, meaning the owner's own assets are exposed. The true cost of a loan is never just the headline rate.
Arrangement fees, valuation and legal costs, early repayment charges and non-utilisation fees on undrawn facilities all add to it, and a loan quoted at 7% can easily cost above 8% once everything is counted. Comparing total cost over the expected life, rather than the advertised rate, is the only reliable method.
In practice
Real-world examples.
Example
A craft brewery borrows $250,000 over seven years to buy fermentation tanks, secured on the equipment itself. The monthly payment fits comfortably inside existing cash flow because the tanks immediately raise production capacity. The bank takes a debenture over the assets but waives a personal guarantee given the security.
Example
A veterinary group uses a $1.4 million commercial mortgage over fifteen years to buy the building it previously rented. The monthly payment is slightly higher than the old rent, but the group builds equity and removes the risk of a rent review. It also gains an asset to refinance later.
Example
A wholesaler arranges a $500,000 revolving facility to bridge the gap between paying suppliers and collecting from customers. It draws $320,000 in peak season and repays by March, paying interest only on the drawn amount plus a 0.4% fee on the undrawn balance. Using a term loan for the same purpose would have cost far more in unnecessary interest.
Think of it
“Commercial loan is a business loan-borrowing money for company purposes.
Formula
Calculation
Monthly payment = P x r / (1 - (1 + r) to the power of -n), where P is the principal, r is the monthly interest rate and n is the number of months
Debt service coverage ratio = Annual operating cash flow / Annual debt service
A packaging business borrows $600,000 over five years at 8% annual interest to buy a new production line.
Monthly rate r = 8% / 12 = 0.6667%, and n = 60 months.
Monthly payment = $12,166 (rounded from $12,165.84).
Annual debt service = $12,165.84 x 12 = $145,990.
Over the full term the business repays $12,165.84 x 60 = $729,950, of which $729,950 - $600,000 = $129,950 is interest.
The lender then tests affordability. With annual operating cash flow of $180,000, the debt service coverage ratio is $180,000 / $145,990 = 1.23, slightly below the bank's 1.25 threshold, so the business negotiates a six year term to lower the annual payment and clear the test.Case study
Seen in the real world.
The following is a fictional case used for illustration. Ashgrove Metalcraft, an invented fabrication business, won a three year supply contract that required $900,000 of new machinery. Its first instinct was to take the cheapest quoted rate, a three year term loan at 6.5%.
Running the numbers showed the payments would consume almost all of the contract's contribution in the early years, producing a debt service coverage ratio of 1.08 and leaving nothing for the working capital the contract also demanded. The finance director instead took a seven year loan at 7.4% secured on the machinery, and paired it with a smaller revolving facility for stock.
The higher rate cost roughly $18,000 more in interest over the first three years, but the coverage ratio sat at 1.46 and the business never came close to a covenant breach. In this illustrative example the more expensive loan was clearly the better decision, because structure mattered more than price.
Watch out
Common mistakes.
- Borrowing short to fund long-life assets, which forces a refinancing at whatever rates and conditions happen to apply years later.
- Comparing lenders on headline interest rate alone while ignoring arrangement fees, early repayment charges and the cost of any required valuations.
- Signing covenants without modelling them against a downside forecast, so a modest dip in trading triggers a technical default the business never anticipated.
Questions
People also ask.
What is a debt service coverage ratio?
It is annual operating cash flow divided by annual loan payments, and most commercial lenders want to see at least 1.25 before approving.
Will I need to give a personal guarantee?
For most small and medium businesses yes, although the requirement can sometimes be limited to a capped amount or dropped where strong asset security exists.
Can I repay a commercial loan early?
Usually, but fixed rate loans often carry break costs, so check the early repayment terms before assuming you can clear the balance without penalty.
From the founder's library
Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%