Best Business Overdraft Rates Australia 2026
Compare overdrafts from 40+ Australian lenders. Rates from 14.55% p.a. secured. Interest only on what you use.
TL;DR — Business Overdrafts
- A revolving credit facility linked directly to your business transaction account — your balance can go negative up to an approved limit.
- You pay interest only on what you've actually drawn — not the full limit sitting in reserve.
- As of May 2026, rates start from 14.55% p.a. for secured overdrafts and 15.24% p.a. for unsecured.
- It's the right tool for short-term cash flow timing gaps — not for major capital expenditure or long-term growth.
- LoanGorilla compares 40+ lenders so you can find the right limit, rate, and structure for your operating needs.
Business Overdrafts in Australia: Flexible Cover When Cash Flow Plays Up
Cash flow timing in business is rarely perfect. Wages are due Friday. The large client invoice won't clear until Tuesday. A business overdraft is the revolving buffer that keeps those two realities from becoming a crisis. LoanGorilla compares business overdraft options from 40+ Australian lenders — so you get a facility that fits your operating rhythm, not just your bank's preferred product.
Check business overdraft options with LoanGorilla — free comparison, no credit score impact, takes 2 minutes.
Compare NowRates at a Glance — Business Overdrafts (May 2026)
| Type | Rate From | Typical Range | Typical Limit |
|---|---|---|---|
| Secured business overdraft | 14.55% p.a. | 14.55–18% p.a. | Up to $500,000 |
| Unsecured business overdraft | 15.24% p.a. | 15.24–20% p.a. | Up to $50,000 |
Indicative rates as of May 2026, vary by lender, business profile, and security position. RBA cash rate: 4.35% (effective 6 May 2026). You pay interest only on the amount drawn, not the total facility limit.
What Is a Business Overdraft?
A business overdraft is a pre-approved revolving limit attached to your business transaction account. When your account balance hits zero, instead of payments bouncing or suppliers missing out, you slide into the overdraft — up to your approved limit — and continue operating without interruption.
The key mechanics that make it genuinely useful:
- Interest only on drawn amounts. If your limit is $50,000 but you're only $5,000 overdrawn, you pay interest on $5,000. The undrawn $45,000 sits in reserve without ongoing interest. You may pay a facility or line fee to keep the limit available, but interest is strictly proportional to use.
- Revolving structure. No fixed repayment schedule. Every dollar that comes into your account automatically reduces the overdrawn balance. Good week, you clear it; slow week, you draw again.
- Permanent availability. Once established, no additional approvals needed to use it. Draw when you need to, repay as cash comes in, repeat until reviewed.
This is fundamentally different from a business line of credit, which is a standalone revolving facility not linked to your transaction account. It's also distinct from a term loan, which advances a fixed sum for a fixed purpose. And it operates at a different scale and flexibility level to invoice finance, which accelerates specific receivables rather than providing a general operating buffer.
Business Overdraft vs Line of Credit: The Critical Distinction
This comparison matters — and getting it wrong costs money.
| Feature | Business Overdraft | Line of Credit |
|---|---|---|
| Linked to transaction account? | Yes — draws automatically | No — separate standalone facility |
| Draw mechanism | Automatic when balance hits zero | Intentional drawdown (transfer or request) |
| Repayment | Automatic as deposits arrive | Intentional repayments on schedule |
| Typical limit | $10,000 – $500,000 | $10,000 – $500,000+ |
| Rate (May 2026) | From 14.55% p.a. (secured) | From ~10% p.a. |
| Best for | Day-to-day operating timing gaps | Planned working capital; larger or ongoing needs |
| Visibility | Embedded in your banking | Separate facility, managed separately |
The practical difference: an overdraft is passive — it activates automatically when your account needs it. A line of credit is active — you decide when to draw and when to repay. For businesses that want a safety net that works without thinking about it, an overdraft wins. For businesses that want a planned, controlled revolving facility for larger or ongoing needs, a line of credit is usually the better fit.
Rate is also worth noting: line of credit rates tend to run lower than overdraft rates for equivalent amounts, reflecting the greater structure and intentionality of the drawdown mechanism.
How a Business Overdraft Works in Practice
Once your overdraft is established and attached to your transaction account, the day-to-day experience is almost invisible:
Your account hits zero
Wages, supplier invoices, rent, and tax instalments are going out. A large customer payment hasn't cleared yet. Your balance hits zero.
The overdraft activates automatically
Instead of payments being dishonoured, your account slides into negative territory up to your approved limit. The business keeps running. Suppliers get paid. Wages land on time.
Incoming cash reduces the balance
When client payments, card settlements, and other revenue hits your account, it offsets the overdrawn balance automatically. You're not making a separate 'overdraft repayment' — deposits just wash through.
The cycle repeats
The limit remains available. Next payroll cycle, next timing gap, next unexpected expense — the facility is there.
For retail businesses and hospitality operators dealing with daily card settlement rhythms, this cycle might happen weekly. For professional services or construction businesses with project-based billing, it might happen monthly. Either way, the structure accommodates both.
Estimate Your Overdraft Cost & Utilisation
A business overdraft is flexible — but the true cost depends on how often, and how deeply, you dip into it. Map your typical usage below to see your interest, fees, and the effective rate on the funds you actually use. Whether you're sizing a new facility or sense-checking an existing one, this gives you a directional annual cost in seconds.
Business Overdraft Cost & Utilisation Estimator
See your interest, fees, and the real effective rate on the funds you actually use.
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Facility details
Your approved overdraft limit.
Charged only on the portion of the limit you actually use.
Line or account-keeping fee, charged whether or not you use the overdraft.
Usage pattern
Rough average negative balance you expect during periods you'd be in overdraft.
For example, 50% if you dip into overdraft about half the time.
How you're using your overdraft
What it's costing you
Light, occasional use
Effective cost on funds you're using: 18.2% p.a. (blending interest and fees).
Indicative only. Banks calculate interest on daily closing balances and fee structures vary — actual statements will show precise charges.
When a Business Overdraft Makes Sense
An overdraft is the right tool when the problem is timing, not volume. Specific situations where it adds genuine value:
Good fit
- Covering payroll between large invoice settlements
- Managing retail inventory purchase timing
- Absorbing unexpected expenses without disrupting plans
- Smoothing seasonal cash flow troughs
- Maintaining on-time supplier payments and relationships
Poor fit
- Funding capital investment or equipment purchases
- Bridging a long-term structural cash shortfall
- Covering costs your business can't actually afford
- Running at or near your limit every single month
- Funding multi-month projects or growth initiatives
If you're running your overdraft at or near its limit every single month, that's a structural cash flow problem — and the overdraft is masking it rather than solving it.
Industries That Lean on Business Overdrafts
Overdrafts are most valuable in industries where operating expenses are relatively predictable but income is lumpy or delayed:
Retail
Daily sales and card settlements; lumpier supplier invoices
Hospitality
Daily costs, weekly payroll, seasonal revenue swings
Professional services
Project billing in arrears with regular monthly overheads
Construction & trades
Milestone-based payments that don't align with weekly costs
Transport & logistics
Fuel and driver costs incurred before freight invoices clear
Creative & media agencies
Production costs front-loaded before client invoice settlement
For retail businesses and hospitality operators, overdrafts are often the primary day-to-day working capital tool.
What to Compare When Choosing a Business Overdraft
Interest rate
Secured overdrafts from 14.55% p.a.; unsecured from 15.24% p.a. Rates are variable and track the RBA cash rate plus a lender margin.
Facility fee vs interest only
Most overdrafts charge a facility or line fee — typically $0 to $300 per year — to keep the limit available, even when you don't use it. Compare total cost, not just rate.
Secured vs unsecured
Secured overdrafts get lower rates and higher limits but put assets at risk. Unsecured options are faster to set up, capped near $50,000, and priced higher.
Limit size
A limit too small doesn't bridge the real gap; one too large creates ongoing facility costs without proportional benefit. Right-size to your cash flow pattern.
Bank-linked vs separate provider
Your existing business bank may not offer the best terms. Specialist non-bank providers often beat bank pricing for established businesses.
Director guarantee
Most overdrafts above $30,000 unsecured require a personal director guarantee — your personal assets are on the line if the facility goes bad.
Potential Drawbacks
Rates are higher than some alternatives
Overdraft rates (from 14.55% p.a.) sit above secured term loans (from 7.49% p.a.) and lines of credit (from ~10% p.a.). For funding held for months rather than days, a term loan or line of credit will cost less.
Easy to become structurally dependent
Because the overdraft is always there and repayment is automatic, it's easy to treat it as a permanent extension of your operating account. Running at or near your limit every month is a warning sign — not a sign the facility is working.
Limited to short-term timing gaps
An overdraft is not designed for capital investment, equipment purchases, or multi-month projects. Use asset finance, term loans, or a line of credit for larger or longer needs.
Eligibility Snapshot
Most lenders want 12+ months of trading history, an active ABN, and turnover that supports the requested limit. Unsecured overdrafts at lower limits are available with less documentation; secured or higher-limit facilities require financial statements and may need collateral or property. A personal director guarantee is standard.
Applying through LoanGorilla takes about 2 minutes. Share your typical monthly cash flow and the limit you're working toward, and we match you with overdraft providers suited to your profile.
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Rates shown are subject to change. WARNING: Comparison rates are true only for the example given and may not include all fees and charges. Always read the lender's terms before applying.