Business Line of Credit: How to Use One Wisely
A business line of credit is one of the most flexible tools a small business can have. You draw what you need, repay it and draw again, paying interest only on what you use. That flexibility is exactly what makes it useful, and exactly what makes it easy to misuse. This guide shows you when a line of credit makes sense, when it does not and the simple rules that keep it a safety valve instead of a permanent hole.
Key takeaways
- A line of credit is revolving: you borrow up to a limit, repay and borrow again, paying interest on the balance you use.
- It works best for short-term, self-liquidating needs such as stock before a busy season or bridging slow-paying invoices.
- It works badly for covering ongoing losses or buying long-life assets.
- Give every draw a purpose and a repayment source, and aim to bring the balance down to zero regularly.
Picture two businesses with the same line of credit. The first draws in April to buy summer stock, sells it through June and July, and clears the balance by August. The second draws a little every month to cover payroll, never quite pays it down, and two years later the line is maxed out with nothing to show for it. Same product, very different outcomes.
The difference is not the lender or the interest rate. It is how the line is used. With summer just around the corner, May is a common time for owners to think about borrowing for the busy season, so it is a good moment to set some house rules.
A quick note: this is general information, not financial or legal advice. Credit products, fees and terms vary widely between lenders and countries. Read your agreement carefully and talk to your accountant or a qualified adviser before you borrow.
How a business line of credit works
A lender approves you for a maximum amount, your credit limit. You can draw any amount up to that limit, usually by transfer to your business account. Interest is charged only on the amount you have drawn, not the full limit. As you repay, the available credit goes back up and you can draw again.
That makes a line of credit different from a term loan, where you receive one lump sum and repay it on a fixed schedule. It is also different from a business credit card, which is designed mainly for day-to-day purchases rather than larger cash needs.
Secured and unsecured lines
Some lines are unsecured, backed mainly by your credit history and the business's finances. Others are secured on assets. An asset-based line, for example, is secured on receivables, inventory or equipment, with a borrowing base that limits how much you can draw at any time. As your receivables or stock go up or down, so does the amount available.
Terms to look for in the agreement
- Interest rate and how it is set. Many lines have variable rates that move with a benchmark.
- Fees. Arrangement fees, annual fees, draw fees or fees on the unused part of the limit.
- Repayment terms. Some lines require interest-only payments, some require regular principal payments and some require the balance to be cleared for a period each year.
- Review and renewal. Many lines are reviewed annually, and the lender can reduce or cancel the limit.
- Covenants. Financial and reporting promises you must keep while the line is open.
- Personal guarantee. Whether you are personally liable if the business cannot repay.
Common mistake
Treating the limit as money you have. A $50,000 line (an example figure) is not $50,000 of cash. It is $50,000 of debt you are allowed to take on. Budget and plan around your real cash, and treat the line as a backup that costs money every day you use it.
Good uses and bad uses
The simplest test for any draw is this: will the thing I am paying for bring the money back within a few months? If the answer is yes, a line of credit is often a reasonable fit. If the answer is no, look for a different tool.
Good uses
- Buying stock ahead of a busy season you can forecast
- Covering payroll while you wait for large customer invoices to be paid
- Taking a supplier's early payment discount when it outweighs the interest
- Handling a short, one-off gap such as a delayed grant or tax refund
- A standby buffer for genuine short-term emergencies
Bad uses
- Covering losses month after month with no fix in sight
- Buying vehicles, machinery or fit-outs that pay back over years
- Paying owner draws or distributions the business cannot afford
- Repaying other debts to make them look smaller
- Funding a speculative project with no clear return
Long-life assets usually belong on a term loan or equipment finance with a repayment schedule that matches the asset's life. Ongoing losses need a business fix, such as pricing, costs or sales, not more debt.
Six house rules for using a line of credit wisely
- Every draw gets a purpose. Write one sentence for each draw: what it pays for and why.
- Every draw gets a repayment source. Name the money that will pay it back, such as specific invoices, summer sales or a refund, and an expected date.
- Set your own lower limit. Decide on a personal ceiling below the lender's limit and treat crossing it as a warning sign.
- Clean up regularly. Aim to bring the balance to zero, or close to it, at least once a year, ideally after your strongest season.
- Review monthly. Check the balance, the interest paid and progress against each draw's repayment plan.
- Protect the line. Keep up with reporting and covenants so the lender is comfortable renewing it.
Pro tip
Open a line of credit when you do not need it. Lenders are usually more willing to approve credit when your numbers look strong. Applying in a crisis is harder and often more expensive, so set it up in a good month and leave it untouched until you have a real reason to use it.
A draw log template
Keep a simple log of every draw. It turns a vague balance into a list of specific decisions you can track. The amounts below are made-up examples for illustration only.
| Draw date | Amount | Purpose | Repayment source | Target repaid by | Status |
|---|---|---|---|---|---|
| 2027-04-20 | $12,000 (example) | Summer stock order | June and July sales | 2027-08-15 | On track |
| 2027-05-05 | $6,500 (example) | Payroll while two invoices are outstanding | Two client invoices due late May | 2027-06-05 | Waiting on one invoice |
| 2027-05-09 | $3,000 (example) | Early payment discount from a supplier | Regular monthly cash flow | 2027-07-01 | On track |
If a row's target date passes and the status still says "waiting," that is your cue to find out why before you draw anything new.
Planning a seasonal draw
Seasonal businesses are where a line of credit really earns its keep. A beach shop, an ice cream parlor, a garden center or a tour company often needs to spend in spring and earns most of its money in summer. A line of credit can bridge that gap neatly, as long as you plan both ends.
Example
Imagine Leah, who runs a seaside gift shop. Each spring she needs about $15,000 of stock before her busy season starts. In past years she paid for it from savings and ran short on cash in June. This year she draws $15,000 from her line in early May, sets a repayment plan of $5,000 a month from July to September and keeps a note of the draw in her log. By the end of September the balance is back to zero, and her savings stayed intact as a true emergency fund. (These figures are made up for illustration.)
To plan your own seasonal draw:
- Use last year's sales by month as a starting point, then adjust for anything you know has changed.
- Draw as late as you safely can, in smaller amounts if possible, to keep interest down.
- Set the repayment months before you draw, not after.
- Build in a cushion in case the season starts slowly or the weather is poor.
Warning signs your line of credit is working against you
Lines of credit drift slowly. These signs suggest it is time to step back:
- The balance has not reached zero, or close to it, in over a year.
- You draw to pay interest or to make payments on other debts.
- You draw for payroll or rent every month, not just occasionally.
- You are close to the limit and feel nervous about the annual review.
- You are considering a merchant cash advance or other high-cost finance to pay down the line.
Merchant cash advances are repaid from a share of future card sales and are often priced with a factor rate that can be very expensive compared with loans. Using one to pay down a line of credit usually swaps a manageable problem for a bigger one.
If you see these signs, sit down with your accountant. The fix might be converting part of the balance to a term loan with a clear end date, cutting costs, raising prices or changing payment terms with customers and suppliers.
Your line of credit action checklist
- Read your agreement for rate, fees, review dates and covenants
- Check whether you signed a personal guarantee
- Set your own personal limit below the lender's limit
- Start a draw log with purpose and repayment source for each draw
- Plan any seasonal draw with repayment months fixed in advance
- Review the balance and interest paid every month
- Aim to bring the balance to zero at least once a year
- Talk to your accountant if the balance keeps creeping up
Frequently asked questions
Is a line of credit better than a term loan?
Neither is better in general. A line of credit suits short-term, repeating needs where the amount changes. A term loan suits one-off purchases with a long payback, such as equipment or a fit-out. Many businesses use both for different jobs.
Do I pay interest if I do not use the line?
Usually you pay interest only on the amount drawn. Some lenders charge an annual fee or a fee on the unused part of the limit, so check your agreement for any charges that apply even when the balance is zero.
Can the lender reduce or cancel my line?
Often, yes. Many lines are reviewed periodically, and the lender may reduce or cancel the limit if the business's finances change or covenants are breached. That is one reason not to rely on a line of credit as your only safety net.
Related reading
The bottom line
A business line of credit is a flexible, useful tool when it funds short-term needs that pay for themselves, such as seasonal stock or a gap while invoices come in. It turns into a problem when it quietly covers ongoing losses or long-term purchases.
Give every draw a purpose and a repayment source, keep a simple log, set your own lower limit and bring the balance down regularly. Do that, and your line of credit stays what it should be: a safety valve you are glad to have, not a debt you cannot escape.
