Knowing how a business line of credit works can change how you think about cash flow. Instead of applying for a new loan every time a gap opens up, you have an approved limit sitting ready. Draw what you need when the supplier bill lands, repay when your customers pay you, and the money is there again for next time. It’s capital on standby.
It’s a simple idea, but a few details make the difference between a line of credit that quietly smooths your cash flow and one that becomes a permanent debt. This guide covers draws, repayments, limits and reviews, then the good and bad ways to use one.
What is a business line of credit?
A business line of credit is a revolving facility with an approved limit. You can draw any amount up to that limit, repay it, and draw again as often as you need. You generally pay only on the amount you’ve drawn, not on the full limit.
Think of it like a water tank on a farm. The tank’s size is your limit. You draw water when you need it; rain refills it. What matters is that you’re not draining it faster than it fills.
How does a business line of credit work, day to day?
There are four moving parts: the limit, draws, repayments and reviews.
1. The limit
Your limit is the maximum you can have drawn at any one time. FastBiz Loans offers limits from $10,000 to $250,000. The lender sets it mainly from your turnover and the consistency of your cash flow, as shown in 3–6 months of bank statements, along with your existing commitments and credit history.
2. Draws
A draw is when you move money from the line into your business account. You choose when and how much. Many facilities let you draw online in minutes, so the money is there when a bill or opportunity arrives.
3. Repayments
Repayments reduce your drawn balance and free up your limit again. Depending on the facility, there may be a regular minimum repayment on the drawn balance, and you can usually repay more whenever cash comes in. The faster you repay, the sooner the capacity is available again.
4. Reviews
Lenders review lines of credit periodically, looking at your recent statements and how you’ve used the facility. A good review can lead to a higher limit. A business whose revenue has dropped sharply, or which has stayed fully drawn for a long time, may see its limit reduced.
An illustrative quarter with a line of credit
Example scenario — illustrative only. A Hobart wholesaler of Tasmanian produce has a $60,000 limit.
Week What happens Drawn balance Available 1 Pays a big grower invoice ahead of a hotel order $25,000 $35,000 3 Draws again to cover wages during a slow patch $40,000 $20,000 5 Hotel pays; the owner repays most of the balance $10,000 $50,000 8 Quarterly BAS due; draws to smooth the payment $30,000 $30,000 12 Strong month of sales; repays in full $0 $60,000 Over the quarter, the business used up to $40,000 when it needed it and paid only on what was drawn, for as long as it was drawn. By the end, the full limit was available again.
Line of credit vs overdraft vs business loan
| Line of credit | Overdraft | Small business loan | |
|---|---|---|---|
| How money arrives | Draw as needed, up to a limit | Account can go below zero | One lump sum up front |
| Reusable? | Yes — repay and draw again | Yes | No — borrow again with a new application |
| You pay on | The amount drawn | The overdrawn balance | The full amount borrowed |
| Best for | Repeating short gaps and opportunities | Small everyday timing gaps | A specific one-off cost or project |
For a deeper side-by-side, see our line of credit vs business loan comparison.
What are good uses for a business line of credit?
A line of credit shines when the need is short-term and the money comes back:
- Paying suppliers before customers pay you, especially on 30–60 day terms
- Stocking up before a busy season and repaying as the season’s sales land
- Smoothing BAS, GST and PAYG payments so a large quarterly bill doesn’t hollow out the account
- Covering wages during a quiet fortnight you know will pass
- Grabbing a bulk-buy discount that pays for itself within weeks
- Handling surprise repairs that can’t wait for next month’s revenue
Our guides to seasonal cash flow planning and managing BAS and tax cash flow show how to plan draws around the year.
What are bad uses for a line of credit?
The trouble starts when a line of credit funds things that don’t bring cash back quickly:
- Long-lived equipment or vehicles — equipment finance usually fits better, with repayments often matched to the working life of the equipment
- Covering a loss-making business month after month — the line becomes permanent debt without fixing the cause
- Repaying other debts in a way that simply shifts the problem around
- Personal spending — business facilities are for business purposes only
A simple test: if you can’t see when and how a draw will be repaid, pause and rethink.
Which habits keep a line of credit healthy?
- Repay whenever cash comes in, not just the minimum.
- Aim to hit zero regularly. A line that touches zero every so often shows it’s working as intended.
- Keep a buffer. Don’t run at the full limit, so you have headroom for genuine surprises.
- Track draws against purposes. A simple note for each draw keeps you honest.
- Stay up to date with the ATO. Unmanaged tax debts can end up on your business’s credit file; the ATO can report them once at least $100,000 is overdue by more than 90 days and the business isn’t engaging.
- Ask for a review when you grow, rather than stacking a second facility on top.
What do I need to set up a line of credit?
Setting up a line of credit usually needs less paperwork than owners expect. For most limits you’ll need:
- Photo ID for each director or owner
- An active ABN or ACN
- 3–6 months of business bank statements, ideally shared through a secure digital link
- At least 6 months of trading and $5,000 or more in monthly revenue
Because the limit is set from what your statements show, the cleaner and more complete they are, the more accurately your limit will reflect your business. If your takings run through more than one account, include them all.
Set up capital on standby
A line of credit works best when it’s in place before you need it. FastBiz Loans offers business lines of credit from $10,000 to $250,000, with decisions in as little as 4 hours once your statements are in. Start the 60-second enquiry at apply now — it doesn’t affect your credit score. If your gaps are bigger or less predictable, compare options on our working capital loans page.
Questions we get asked
Is a business line of credit the same as an overdraft?
They're similar in spirit. An overdraft is attached to your transaction account and lets the balance go below zero. A line of credit is usually a separate facility you draw from into your account. The line of credit can be easier to track and keep apart from everyday spending.
Do I pay anything if I don't use my line of credit?
You generally pay interest only on what you've drawn. Some facilities also have costs for keeping the limit available. Ask how pricing works for your facility, because every one is priced on the business's situation.
Can my limit go up?
Often, yes. If your turnover grows and you've managed the facility well, you can ask for a limit review. Lenders look at your recent bank statements and how you've used the line.
Can a lender reduce my limit?
It's possible if your business's position changes significantly, such as a big drop in revenue or repeated missed repayments. Keeping your statements healthy and your usage steady protects your limit.
How quickly can I draw funds once the line is set up?
Once your facility is approved and set up, drawing funds is usually quick, which is the whole point. Many owners draw through an online portal and see funds in their business account soon after.
Should I use a line of credit to buy equipment?
Usually not. Equipment is a long-lived asset better suited to equipment finance, where repayments are often matched to the working life of the equipment. Keep your line of credit free for day-to-day cash flow.