What Is a Personal Overdraft?

Looking for flexible access to extra funds? Understanding your options is crucial for making smart financial decisions. A personal overdraft could be a flexible way to manage short-term cash flow gaps, giving you access to funds when you need them most.
We’ll also introduce another option—Credit24’s personal loans—which could suit your needs, offering predictable repayments and transparent terms.
What is a personal overdraft and how does it work?
A personal overdraft is a flexible credit facility linked to your everyday transaction account, allowing you to access extra funds when your balance drops below zero. Think of it as a safety net that helps cover unexpected shortfalls or timing gaps in your cash flow.
Unlike traditional loans that provide a lump sum upfront, an overdraft sits dormant until you need it. When your account balance goes into the negative, you automatically tap into your overdraft facility up to your approved limit.
Credit limits
In Australia, personal overdraft limits typically range from $100 to $20,000, depending on your financial situation and your bank’s lending policies. This limit reflects the maximum negative balance you’re allowed to access, determined by factors such as income, credit score, and existing financial commitments.
Activation process
Setting up a personal overdraft generally involves:
Application through your bank (online, by phone, or in person)
Credit assessment (income verification + credit check)
Approval and confirmation of your limit based on lending criteria
Linking the facility to your everyday transaction account
Once activated, the overdraft works automatically. You don't need to request access—your overdraft activates anytime your balance would otherwise fall below zero.
Interest calculations
Interest on personal overdrafts is charged differently from standard loans. You only pay interest on the amount you actually use, not on your full approved limit.
Most banks calculate interest daily on the outstanding balance and apply the charge monthly.
Example: If you have a $5,000 overdraft but only use $1,200 for a week, you only pay interest on the $1,200 for those seven days.
This structure can make overdrafts cost-effective for short-term borrowing—provided you repay them quickly.
Fee structures
Be aware of potential fees, even if you don’t actively use your overdraft:
● Establishment fee: $0–$150
● Monthly service fee: $5–$15
● Annual fee: sometimes charged instead of monthly fees
These fees apply regardless of usage, which can make overdrafts costly if left unused for long periods.
Repayment requirements
Overdrafts offer flexible repayment with no fixed schedule. You can repay the borrowed amount at your own pace.
However, this flexibility requires careful management. Without regular repayments, it’s easy to stay in overdraft and keep accruing interest. Many financial advisors recommend clearing your overdraft quickly to minimise interest costs.
Types of personal overdrafts
Personal overdrafts come in different forms suited to varying needs.
Authorised / arranged overdrafts
These are formally set up with your bank through an application. You agree to a set limit with clear interest and fee terms. Because the facility is pre-approved, authorised overdrafts generally have lower interest rates than unauthorised overdrafts.
Most major Australian banks offer authorised overdrafts, especially for customers with good credit histories.
Business vs personal overdrafts
Business overdrafts differ from personal ones in several ways:
● Higher limits (often $100,000+)
● Different fee structures (typically higher)
● Tax implications (interest may be tax-deductible)
● May require security or guarantees
Business overdrafts help manage cash flow in commercial operations, while personal overdrafts support individual financial needs like unexpected household expenses.
Benefits of personal overdrafts
Personal overdrafts offer several practical benefits, particularly for short-term cash flow issues.
Easy to access
Once established, overdrafts provide instant access to funds when needed. There is no new application each time.
Because the facility is revolving credit, repayments restore your available limit automatically, making overdrafts ideal for irregular incomes or fluctuating expenses.
Emergency fund backup
An overdraft can act as an extra buffer alongside your emergency savings. It can help cover:
- Urgent medical costs
- Unexpected car repairs
- Emergency travel
- Sudden household bills
You only pay for what you use
One of the biggest advantages is the “pay only for what you use” structure. Interest applies only to the amount drawn—and only for the days it’s used.
This can be cheaper than a personal loan when borrowing for just a few days or weeks.
Protection from dishonour fees
Overdrafts can prevent declined payments due to insufficient funds. This helps avoid:
- Dishonour fees from your bank
- Late fees from service providers
- Payment failures that could disrupt essential services
Personal loan vs personal overdraft
Choosing between a personal loan and an overdraft depends on your purpose, flexibility needs, and borrowing habits.
Purpose:
- Personal loans: best for one-off, planned expenses (renovations, debt consolidation, major purchases).
- Overdrafts: best for unpredictable or short-term cash flow issues.
Flexibility:
- Overdrafts: repay anytime, use as needed.
- Loans: structured repayments (less flexible but more disciplined).
Access to funds:
- Overdraft: funds become available automatically as your balance dips below zero.
- Loan: one-time approval and lump sum payment.
Repayment structure:
- Loan: fixed repayments, fixed end date.
- Overdraft: no due date—can lead to long-term debt if unmanaged.
Approval requirements:
- Loans: often stricter, especially for large amounts.
- Overdrafts: may be easier for lower limits, especially with existing banking relationships.
Long-term vs short-term:
- Loans: ideal for long-term commitments with predictable payments.
- Overdrafts: ideal for short-term, occasional borrowing.
Why choose a personal loan instead?
While overdrafts are flexible, they can encourage ongoing debt because they lack a structured repayment pathway.
Credit24 personal loans offer a clearer and more predictable alternative.
With a Credit24 personal loan:
- You get a fixed repayment schedule with a set end date.
- Loan amounts range from $500 to $10,000.
- Terms from 6 to 36 months help you match repayments to your budget.
- Transparent fees and fixed rates mean no surprises.
- The online application takes minutes, and approved funds can reach your account within minutes.
This combines the speed of an overdraft with the financial discipline of structured repayments.
Apply now

