Quick answer
In business lending, margin has two meanings. A loan margin is the amount a lender adds on top of its base or reference rate to cover risk, costs and profit; it's the part of the price you can actually negotiate. A profit margin is the share of each sales dollar your business keeps after costs. Lenders look at both: one sets your price, the other shapes how much they'll lend.
Key points
- Loan margin: the lender's add-on above a base rate, set by risk and security
- The base rate moves with the market; the margin is what you negotiate
- Profit margin: what the business keeps from each dollar of sales
- Thin or falling profit margins reduce borrowing power more than many owners expect
Ask a banker about margin and they’ll talk about pricing. Ask your accountant and they’ll talk about profit. Both are right, and a business loan application involves both, which is why the word causes so much confusion at the lending table.
Margin as the lender’s add-on
Most variable business loans are priced in two layers. The bottom layer is a base rate: a bank’s own business reference rate, or a market benchmark that moves with wholesale funding costs. The top layer is the margin, which the lender adds for the risk of lending to you, its running costs and its profit.
The split matters because the two layers behave differently. You can’t do anything about the base rate; it follows the market and the Reserve Bank. The margin is personal. It reflects your risk grade, the security on offer, the size of the facility and how badly the lender wants your business. That makes it the part of the price worth arguing about.
In its October 2025 bulletin on small business conditions, the Reserve Bank reported that the gap between SME lending rates and the cash rate had narrowed again, continuing a multi-year trend it put down partly to lenders competing harder. It also noted that smaller firms still generally pay more than large ones and that unsecured loans are usually priced higher than secured ones. In plain terms: margins are negotiable, and security still buys a lower one.
Margin as your profit
On the business side, margin is the slice of each sales dollar you keep. Business.gov.au describes it as usually shown as a gross margin percentage, the proportion of profit in every dollar of sales. Gross margin covers direct costs only; net margin takes off every expense.
This is the figure that quietly drives serviceability. Two businesses can each turn over $1.5m, but if one keeps 45 cents in the dollar after direct costs and the other keeps 18 cents, the first has far more room to carry a repayment. Lenders who assess on bank statements will see the same story through the gap between money in and money out.
Want a quick read on yours? The margin and markup calculator converts one into the other in seconds.
Worked example: margin in both senses
A Toowoomba equipment hire business wants $300k over five years to replace part of its fleet.
The loan margin. Two banks offer the same base rate. Bank A’s margin works out to about $3,000 a year more interest on the full $300k than Bank B’s. On a reducing balance over five years, the gap still comes to roughly $8,000 to $9,000. Same base rate, same term, a meaningful difference that came entirely from the margin.
The profit margin. Bank B asks why gross margin slipped from 52% to 44% last year. The owner explains that two machines were off-hire for months awaiting parts, and shows invoices for the replacements the loan will fund. That explanation, backed by documents, keeps the application moving rather than prompting a smaller offer.
Comparing offers like this is easier in dollars. Our loan cost comparison calculator lays two quotes side by side, and if a bank has already passed on your application, send us the details and we’ll look at where else it could go.
Related terms
Gross profit and net profit are the raw numbers behind profit margin. On the pricing side, see establishment fee and line fee, which sit alongside the margin in the total cost, and our guide to how business lenders make money.
Margins tight and the bank not budging?
Banks are usually the cheapest money around, and if one offers you a sharp margin, take it seriously. When the answer is no, or the price reflects a rough year rather than where the business is heading, other lenders read the same numbers differently. Tell us what you need in a form that takes about a minute. Your credit history stays untouched while we look, and the enquiry isn’t shopped around the market. Someone from our team reads it and phones you. Real turnover and margin figures help us point you to a lender that suits the business on the first go.
Frequently asked questions
Is the loan margin fixed for the life of a business loan?
Not always. On many bank facilities the margin is set in the letter of offer for a period and can be reviewed at the annual review or when the facility is renewed. Read the pricing clause to see when, and why, the lender can change it.
Can I negotiate a lender's margin?
Often, yes, particularly with banks. Strong security, clean financials, a long relationship and a competing offer in writing all give you leverage. Ask for the dollar difference on the full loan so you know what a concession is worth.
What is the difference between margin and markup?
Both compare cost with price, but from different ends. Margin divides the profit by the selling price; markup divides it by the cost. An item bought for $60 and sold for $100 has a $40 profit, which is a 40% margin but a 67% markup.
Why do lenders care about my gross margin?
Gross margin shows how much of each sale is left to pay overheads, wages and loan repayments. A business with a healthy margin can usually absorb a repayment more easily than one turning over the same amount on thin margins.
What is a margin call?
A margin call happens when the value of an asset securing a loan falls far enough that the loan-to-value ratio goes past the lender's limit. The lender may ask you to reduce the loan or add security. It's more common with investment loans than everyday business loans.