The percentage of points awarded relative to the purchase or service usage amount. Also called the "cashback rate," an earning rate of 1% means 1 point is awarded per 100 yen spent. It is one of the most fundamental comparison metrics when choosing credit cards and common point programs.
How to Calculate Earning Rates and Comparison Pitfalls
The earning rate is calculated as "points awarded / amount spent x 100." For example, if a 1,000 yen purchase earns 10 points, the earning rate is 1%. However, comparing earning rates requires caution, as the value per point differs across programs - a fact that is easy to overlook.
For instance, Card A awards 1 point per 100 yen (1 point = 1 yen equivalent), while Card B awards 2 points per 100 yen (1 point = 0.5 yen equivalent). Card B's nominal earning rate appears twice as high, but the actual cashback is the same 1 yen. When comparing earning rates, you must always normalize to the "yen-equivalent value per point" to calculate the effective earning rate. Many credit card comparison sites standardize on this effective rate.
Practical Techniques to Maximize Your Earning Rate
To boost your earning rate, look beyond just choosing a card with a high base rate - leveraging partner stores and campaigns is an effective strategy. Many credit cards offer partner store programs where the earning rate jumps to 2-5% at specific convenience stores or supermarkets. Choosing a card whose partner stores align with your regular shopping habits can significantly change your annual point haul.
Another practical consideration is the "rounding unit" for point awards. Cards that award points in 1,000-yen increments give zero points on a 999-yen purchase. Cards that award in 100-yen or 1-yen increments minimize such losses. The more frequently you make small purchases, the greater the benefit of choosing a card with a smaller rounding unit. Services like PayPay, which provide cashback calculated to the single yen, excel in this regard.
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