The Two Main Types of Cashback Credit Cards
Cashback credit cards are among the simplest and most popular rewards products available. Unlike points programs, there's no mystery about what you're earning — you get a percentage of your spending returned as cash. But within the cashback world, there's an important choice to make: do you want a flat-rate card or a category-bonus card?
How Flat-Rate Cashback Cards Work
A flat-rate cashback card pays the same percentage on every purchase, regardless of where or what you buy. Common rates range from 1% to 2%.
Advantages:
- Simple — no need to track categories or rotating offers
- Consistent earnings on all spending, including categories not typically rewarded
- Great for people with varied or unpredictable spending patterns
- No risk of forgetting to activate quarterly bonuses
Disadvantages:
- Lower ceiling — you'll rarely beat 2% across all categories
- Misses out on the higher bonus rates available in targeted categories
How Category Cashback Cards Work
Category cashback cards offer higher rates in specific spending areas — such as groceries, petrol, dining, or streaming services — while paying a lower base rate on everything else. Some use fixed categories; others rotate quarterly.
Advantages:
- Higher earning potential if your spending aligns with bonus categories
- Can deliver 3%–6% back in key categories
- Useful for households with predictable, concentrated spending
Disadvantages:
- Requires more management and awareness of categories
- Rotating categories demand quarterly activation
- Spending caps often apply to bonus categories
- Base rate on non-bonus spending is often low (1% or less)
Side-by-Side Comparison
| Feature | Flat-Rate Card | Category Card |
|---|---|---|
| Earn Rate | 1%–2% on everything | 3%–6% on categories, ~1% base |
| Complexity | Very low | Moderate to high |
| Best For | Varied spenders | Concentrated spenders |
| Annual Fee | Often none | Varies (often none) |
| Spending Caps | Usually none | Common on bonus categories |
| Activation Required | No | Sometimes (rotating cards) |
Which Card Type Earns More?
The answer depends entirely on your spending profile. Let's look at a simple example:
Suppose you spend $800/month on groceries and $1,200/month on other purchases:
- Flat-rate at 1.5%: ($2,000 × 1.5%) = $30/month
- Category card (5% groceries, 1% other): ($800 × 5%) + ($1,200 × 1%) = $40 + $12 = $52/month
In this scenario, the category card wins — but only because grocery spending is high and falls within the bonus category.
The Case for Using Both
Many savvy cardholders use a two-card strategy:
- A category card for high-spend areas like groceries, dining, or fuel
- A flat-rate card for everything else
This approach maximises earning across all spending without leaving money on the table in uncovered categories.
Key Things to Watch Out For
- Annual fees: Make sure your cashback outweighs any annual fee.
- Foreign transaction fees: Important if you travel internationally.
- Redemption minimums: Some cards require a minimum balance (e.g., $25) before you can redeem.
- Cashback expiry: Check whether your cashback expires if you don't redeem within a certain period.
Ultimately, the best cashback card is the one that matches your real-world spending habits. Take 10 minutes to review your last few months of bank statements — the right card choice will become obvious.