Credit card rewards are incentives offered by banks to encourage you to use their cards. When you make a purchase, you earn a small reward, which can come in a few different forms. The most common are cash back, points, or miles.

• Cash Back: This is the simplest form. You get a percentage of your spending back as a statement credit or a direct deposit. For example, a card might offer 1.5% cash back on all purchases.
• Points: These are a flexible currency you can redeem for various things, like travel, gift cards, or merchandise through the bank's online portal.
• Miles: These are typically associated with a specific airline or a flexible travel program. You can redeem them for flights, hotel stays, or other travel-related expenses.

You earn rewards on almost every purchase you make with your card. The amount you earn is usually based on how much you spend. A standard rate might be one point or mile per dollar spent.

However, the real power comes from bonus categories. Many cards offer accelerated rewards for spending in specific areas. For example, a card might give you 3 points per dollar on dining, 2 points on groceries, and 1 point on everything else.

The key is to find a card that rewards you for how you already spend. If you spend a lot on travel, a card with bonus miles on flights and hotels makes sense. If you have a big family and a large grocery bill, look for a card that rewards grocery spending.

Another major way to earn a large number of points quickly is through sign-up bonuses. These are big batches of points or miles offered to new cardholders after they meet a certain spending requirement in the first few months.

There's one rule that's more important than any earning strategy: always pay your balance in full and on time each month. Credit cards often have high interest rates, or Annual Percentage Rates (APRs). If you carry a balance from one month to the next, the interest you'll pay can quickly wipe out the value of any rewards you’ve earned.

Think of it this way: earning 3% back on a purchase is great, but not if you end up paying 20% interest on it. The rewards game only works in your favor if you avoid interest entirely.

Before we move on, let's review the key terms we've covered.

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By understanding these fundamentals, you can start making your spending work for you.