Business line of credit vs a secured short-term loan: which fits?

Two business owners need $200k. One needs it every year from May to September, when trade slows and stock has to be bought for spring. The other needs it once, for four months, to clear a tax debt before a big contract pays. They’re asking for the same amount, but they need different tools.

This guide compares the two most common answers: a revolving business line of credit and a one-off secured short-term loan. To be upfront: we don’t offer lines of credit. What we fund are one-off loans secured by a first mortgage, a second mortgage or a caveat. That’s exactly why it’s worth explaining when a line of credit is the better choice.

How do the two compare side by side?

	Business line of credit	Secured short-term loan
Shape	A limit you draw, repay and redraw	One amount for a set term
Typical provider	Banks and some non-bank lenders	Private lenders
Security	Larger limits usually secured on property; smaller ones may be unsecured with guarantees	Real estate: first mortgage, second mortgage or caveat
What you pay for	Interest on the drawn balance, plus fees that may apply to the whole limit	Interest on the amount borrowed for the term, plus an assessment fee and legal costs
Repayments	Interest regularly; principal as you choose within the limit	Interest can be prepaid or capitalised; principal repaid in one go at the end
Lifespan	Ongoing, subject to review	Months, ending at a defined exit
Approval time	Weeks for a bank; days for some online lenders	Possible in 24–48 hours after complete documents
Main risk	Limit reduced or not renewed at review	Exit runs late at maturity
Best for	Recurring, unpredictable swings	A single need with a known end

On business.gov.au’s funding page, a line of credit is simply borrowing up to a certain limit, with overdraft services listed as a separate bank product. They behave alike in daily use. The practical difference is where they live: an overdraft hangs off the everyday account, whereas a line is normally its own facility with its own statement.

When does a line of credit make more sense?

• The need recurs. Seasonal stock builds, monthly payroll peaks, or debtors that always pay late. Reapplying for a new loan every time would be slow and costly.
• Amounts are unpredictable. You don’t know whether you’ll need $40k or $140k next month, so paying interest only on what’s drawn suits.
• You qualify with a bank. Good financials, adequate security and time to wait for approval.
• You want it in the background. A line sitting unused is insurance against surprises.

When does a secured short-term loan make more sense?

• It’s a one-off. An ATO debt, a purchase deposit, a settlement shortfall, a large contract or a partner buy-out.
• There’s a clear exit. A sale, a refinance, a contract payment or a known refund.
• Timing is tight. A bank line can’t be approved in time.
• The bank has said no, reduced your limit or won’t renew. See when the bank won’t renew your facility.
• You’d rather have no repayments for a few months. With capitalised interest or prepaid interest, cash flow is untouched during the term.

Our short-term business loans page explains the structures, and secured working capital loans covers using them for operating needs.

How do you compare the true cost?

Comparing headline pricing alone misleads, because the two charge in different ways. Compare the total dollars over the real period you’ll use the money:

For a line of credit, add up:

• interest on your expected average drawn balance over the year;
• any establishment fee;
• any line fee or unused limit fee charged on the whole limit, drawn or not;
• annual review or renewal fees;
• the cost of the security (legal and registration) if property is involved.

For a secured short-term loan, add up:

• interest on the amount borrowed for the actual term;
• the assessment fee;
• legal and registration costs;
• any extension cost if the exit might run late.

Pricing for private loans is set deal by deal on the security, LVR, term and exit, with the aim of the sharpest outcome your situation allows. Our guide to the total cost of a short-term loan shows the calculation step by step.

The key insight: a line of credit you hold all year but only use for three months still costs fees for twelve. A short-term loan for three months costs nothing once it’s repaid.

What happens at a line of credit review?

Lines of credit are typically reviewed each year. The lender looks at fresh financials and may renew, reduce, change terms or decline to continue. For small business customers of banks that subscribe to the Banking Code of Practice, the 2025 Code includes commitments such as:

• at least 30 days’ notice of most changes to terms that are unfavourable to you, with some exceptions;
• at least 3 months’ notice, where you’re not in default, if the bank decides not to extend a loan when its term ends;
• no less than 30 days’ notice of a payment failure before the bank demands full repayment or starts enforcement, subject to exceptions.

Those notice periods are useful, but they’re short if you need to replace a facility. Our guide to debt notice deadlines lists these alongside other legal timeframes.

Is an unsecured line of credit a cheaper shortcut?

Sometimes it’s quicker to arrange. In its October 2025 review of small business conditions, the RBA noted that unsecured lending to small firms tends to run for short periods at higher prices, with borrowers often using it to get through temporary cash shortfalls. Smaller unsecured lines usually require director guarantees and can have frequent repayments. They suit small, short needs; they rarely suit $200k or more.

For a fuller comparison, see secured vs unsecured business loans.

Which questions decide it for your business?

Run through these before you apply for either:

1. Will I need this money again next year? If yes, a revolving line is worth the effort of qualifying for. If no, you’re paying for flexibility you won’t use.
2. Do I know the date the money comes back? A dated exit, such as a contract payment, a settlement or a refund, suits a fixed-term loan. An open-ended need suits a line.
3. What would a limit cut do to me? If losing the facility at review would cause a crisis, don’t rely on a line alone for something critical.
4. How fast do I need it? If the answer is this week, a bank line is unlikely to be approved in time.
5. What security will each lender take? A bank line over your home and a private loan over the same home can coexist, but only if the ranking and consents are sorted out first.
6. What’s the total dollar cost over the real period? Not the headline figure. Add every fee, and compare like with like.

If most of your answers point to “one-off, dated, urgent”, a short-term secured loan is probably the right tool. If they point to “recurring, unpredictable, not urgent”, put your energy into qualifying for a line.

How does each behave when things go wrong?

A line of credit fails quietly: the limit is reduced or not renewed at review, often at the worst time, because a weak year is exactly when reviews tighten. A secured short-term loan fails loudly: the whole balance falls due on a set date. Neither is risk-free. The protection is the same in both cases: talk to the lender early, keep your BAS and tax lodgements current, and have a fallback exit, such as selling an asset or refinancing elsewhere, mapped out before you need it.

Can you use both together?

Yes, and many businesses do. Common combinations:

• Bridge then line. A private secured loan covers a one-off need now, while the bank assesses a new line of credit. The bank line, or a bank term loan, then becomes the exit.
• Line for swings, private loan for a project. The business keeps its line for day-to-day use and funds a one-off purchase, such as premises or a partner buy-out, with a separate short-term loan.
• Private loan to restore the line. If a review cut your limit because of an ATO debt, clearing the debt with a property-secured loan can make the next review easier. Our ATO payment plan vs secured loan guide weighs the options.

If both facilities are secured over the same property, your bank may need to consent to a second mortgage, or a caveat may be used. Our second mortgage business loans pillar explains how ranking works.

What does each look like in numbers?

Illustrative example: a Canberra IT services firm needs $200k. Option 1 is a $250k bank line of credit secured on the director’s home, with a line fee on the full limit and an annual review. Option 2 is a one-off $200k second mortgage for 5 months, with interest prepaid, to cover payroll and Payday Super until a government contract pays. The home is worth about $1.3m with $600k owing, so at an illustrative 70% LVR band ($910k) there is about $310k of room behind the bank. The firm’s need is a single event with a dated payment, so Option 2 costs less in total dollars even though its pricing per year is higher: it’s repaid in month five and nothing accrues after that. If the firm expected the same gap every year, Option 1 would win.

Businesses in the ACT can read our Canberra private lender page. For payroll specifically, see covering Payday Super and payroll.

One-off need with a clear end? See if you qualify

If a single, dated need is what you’re facing and you own property, send us the details; the form takes about a minute. Enquiring leaves no mark on your credit file, nothing is passed to other lenders, and a specialist looks at every submission personally. Accurate figures for the property and its existing loans get you the right answer first time. Check what your property could fund.