Credit Cards vs Debit Cards: understanding the differences
Credit Cards and Debit Cards may look similar in your wallet or digital wallet, but they work in very different ways behind the scenes. The main difference between a Credit Card and a Debit Card is where the money comes from when you make a purchase.
For many Australians, the choice is not just “credit or debit”. Different Card types can serve different purposes depending on how you manage cash flow, travel, online purchases, subscriptions, rewards or everyday spending.
This guide explores the practical differences between Credit Cards and Debit Cards, including security, repayments, rewards, digital payments and travel considerations, to help you pick the right Card for your spending needs.
How Credit Cards and Debit Cards work
Debit Cards
A Debit Card is linked to your bank account and uses money you already have. When you make a purchase, the transaction is authorised against the available balance in your linked account. Transactions are typically deducted from your account balance shortly after a purchase is authorised. Debit Cards are commonly used for:
- Everyday spending
- ATM cash withdrawals
- Subscription payments
- Budget-conscious spending
- Accessing transaction accounts through digital wallets
Credit Cards
A Credit Card lets you borrow funds from your Card issuer up to an approved credit limit. You then repay the balance according to your statement terms (interest charges apply and accrue if the full balance is not paid on time). When you make a purchase, the issuer pays the merchant on your behalf and the amount is added to your account balance. You’ll then receive a statement showing:
- Transactions made during the statement period
- Minimum repayment amount
- Payment due date
- Any interest or fees charged
Depending on the Card and how it’s used, Credit Cards may offer features such as:
- Interest-free periods on eligible purchases
- Rewards points programs
- Complimentary travel-related benefits
- Purchase protections
- Expense management tools
- Access to offers and experiences
Because Credit Cards involve borrowing, eligibility criteria, fees and interest rates apply.
Credit Card vs Debit Card: quick comparison
| Feature |
Credit Card |
Debit Card |
|---|---|---|
| Source of funds |
Borrowed funds up to approved limit |
Your own money from linked bank account |
| Repayments required | Yes | No borrowed balance to repay |
| Interest charges | May apply if balance isn’t paid by due date |
Generally no interest on purchases |
| Annual Card fee |
Typically yes |
Typically no |
| Rewards programs | Common on many Cards | Less common |
| Credit checks | Usually required |
Typically not required |
| Impact on credit history | May affect credit history |
Usually does not build credit history |
| Purchase protections | May be available on some Cards |
May be more limited |
| Spending limit | Approved credit limit |
Available account balance |
| Cash withdrawals | Often treated as cash advances |
Standard ATM access |
| Flexible repayments | Yes via Buy Now Pay Later or pay in instalments features |
Yes via overdrafts and Buy Now Pay Later features |
Card security and fraud protection
For Card users, security features and dispute processes are often just as important as rewards or convenience.
Fraud monitoring and transaction alerts
Both Debit Cards and Credit Cards may include:
- Real-time fraud monitoring
- Transaction notifications
- Digital wallet tokenisation
- Temporary card lock features
- Multi-factor authentication for online purchases
Features vary depending on the issuer and Card type.
Unauthorised transactions and disputes
If a transaction is unauthorised or goods and services are not delivered as expected, cardholders may be able to dispute the transaction through their Card issuer. Dispute processes, timelines and outcomes vary by issuer and payment network1.
In Australia, chargeback rights also allow consumers to ask their bank or Card issuer to reverse a Credit or Debit Card transaction in certain circumstances.
Learn more about Fraud Protection Guarantee1 and unauthorised transactions with Amex.
Digital wallets
Many Australians now use their Cards through digital wallets or wearable devices, reducing the need to carry a physical Card.
Both Debit Cards and Credit Cards can often be added to digital wallets such as Apple Wallet, Google Wallet and Samsung Wallet2.
Digital wallets use tokenisation technology to help protect Card details during transactions. Tokenisation replaces the Card number with a unique digital token, reducing the exposure of Card information when making purchases.
Rewards and benefits
One of the biggest differences between Debit Cards and Credit Cards is the potential access to additional Card benefits.
Rewards programs
Some Credit Cards allow Card Members to earn points on eligible purchases that can be redeemed for:
- Travel for flights, upgrades, hotels or car rentals
- Gift Cards
- Retail purchases
- Experiences
- Statement credits
The value of rewards can vary depending on earn rates, spending habits and redemption choices.
Explore what you can get with Amex Membership Rewards® program.
Travel and lifestyle benefits
Eligible Credit Cards may also include:
- Complimentary travel-related benefits like travel insurance
- Airport lounge access
- Dining or entertainment offers
- International Card support
These types of features are generally less common on standard Debit Cards, although some premium debit products may offer selected benefits.
Discover the travel benefits available with eligible Amex Cards and how to make the most of your rewards points.
Rewards and benefits
One of the biggest differences between Debit Cards and Credit Cards is the potential access to additional Card benefits.
Rewards programs
Some Credit Cards allow Card Members to earn points on eligible purchases that can be redeemed for:
- Travel for flights, upgrades, hotels or car rentals
- Gift Cards
- Retail purchases
- Experiences
- Statement credits
The value of rewards can vary depending on earn rates, spending habits and redemption choices.
Explore what you can get with Amex Membership Rewards® program.
Travel and lifestyle benefits
Eligible Credit Cards may also include:
- Complimentary travel-related benefits like travel insurance
- Airport lounge access
- Dining or entertainment offers
- International Card support
These types of features are generally less common on standard Debit Cards, although some premium debit products may offer selected benefits.
Discover the travel benefits available with eligible Amex Cards and how to make the most of your rewards points.
Using Credit Cards and Debit Cards overseas
When travelling internationally, the differences between Credit Cards and Debit Cards can become more noticeable.
Foreign transaction fees and currency conversion
Depending on the Card, overseas purchases may attract:
- Foreign transaction fees
- Currency conversion margins
- Overseas ATM withdrawal fees
Fees and exchange rates vary between issuers and products.
Check out the Currency Conversion Fee applicable to Amex Cards.
Hotels, car rentals and travel holds
Hotels and car rental providers may place temporary pre-authorisation holds on funds.
With Debit Cards, these holds may reduce access to available account balances until the transaction clears.
With Credit Cards, the hold typically affects available credit instead of linked cash funds.
Travel flexibility
Some travellers use a combination of Card types when overseas:
- Debit Cards for ATM access and day-to-day spending
- Credit Cards for bookings, larger purchases or travel-related expenses
The most suitable setup depends on individual preferences, travel style and budgeting habits.
|
Credit Scores and borrowing considerations
In Australia, responsible use of a Credit Card may contribute to your credit history. Lenders may consider factors such as:
Debit Card usage does not usually contribute to a credit history because no borrowing is involved.
Applying for a Credit Card also involves eligibility checks, lending criteria and application approval from the Card issuer.
Learn more about managing your credit score and your credit limit. |
How does a Charge Card work?
When you use a Charge Card to make purchases, those transactions are added to your monthly statement.
At the end of each billing cycle:
Unlike a Credit Card, a Charge Card does not usually allow you to carry a balance month to month. |
|
How does a Charge Card work?
When you use a Charge Card to make purchases, those transactions are added to your monthly statement.
At the end of each billing cycle:
Unlike a Credit Card, a Charge Card does not usually allow you to carry a balance month to month. |
Credit Scores and borrowing considerations
In Australia, responsible use of a Credit Card may contribute to your credit history. Lenders may consider factors such as:
Debit Card usage does not usually contribute to a credit history because no borrowing is involved.
Applying for a Credit Card also involves eligibility checks, lending criteria and application approval from the Card issuer.
Learn more about managing your credit score and your credit limit. |
FAQs
Neither Card type is inherently better, they simply work differently.
Debit Cards provide direct access to your own money and are commonly used for day-to-day transactions.
Credit cards may offer additional flexibility, benefits and protections, but they also involve borrowing and repayment obligations.
Many Australians use both Card types together depending on the purchase, personal circumstances and financial objectives.
Both Card types may include security features such as fraud monitoring and dispute processes. Some consumers prefer Credit Cards for larger purchases because they use borrowed funds rather than directly accessing transaction account balances.
Generally, no. Debit Cards use your own funds and usually do not contribute to your credit history because they do not involve borrowing.
Interest charges depend on how the Card is used and whether balances are repaid on time, to the full amount and according to the Card’s Terms and Conditions. Find out more on how interest is calculated.
Many Debit Cards can be used overseas anywhere the payment network is accepted. Fees, exchange rates and ATM charges may apply depending on the Card and issuer.
Hotels and rental companies may place pre-authorisation holds on funds for incidentals or security deposits. Credit Cards can make these holds easier to manage without directly reducing available cash balances.
Yes. Many Debit Cards and Credit Cards can be added to compatible digital wallets and wearable payment devices.
Please note: this information is intended for general educational purposes only and does not constitute financial, credit or legal advice. Consider your personal circumstances before applying for any financial product and always read the Terms & Conditions.
American Express does not offer Debit Cards.
Life With Amex: make the most of Amex Cards
Read our Life With Amex articles and discover tips on managing your Card, lifestyle inspirations, travel recommendations, event ideas and business insights.
Life With Amex: make the most of Amex Cards
Read our Life With Amex articles and discover tips on managing your Card, lifestyle inspirations, travel recommendations, event ideas and business insights.
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1. Fraud Protection Guarantee.
Provided that you do not contribute to or unreasonably delay reporting any misuse of your Account and you have complied with your Card Conditions, you will not be held liable for any unauthorised charges.
2. Apple Wallet is a trademark of Apple Inc., registered in the U.S. and other countries and regions.
Google Wallet is a trademark of Google LLC.
Samsung Wallet is a trademark of Samsung Electronics Co., Ltd.