Credit Card Spending Caps Explained: What the Fine Print Actually Says
Most Canadian rewards credit cards advertise a headline earn rate: 5x points, 3% cashback, 4x on dining. What the fine print adds is that many of these rates come with a cap.
A spending cap limits how much spending earns the promoted rate. Once you reach the cap, your earn rate drops to a lower base rate for the rest of the period. The cap resets each month or each year, depending on the card.
How Caps Work in Practice
The American Express Cobalt Card is a good example. Its top earn rate covers dining, groceries, and streaming, and the Membership Rewards terms document that all three categories share a single combined monthly cap rather than one cap per category.
That means a heavy grocery month can use up the cap before you've spent anything on dining. Any further spending in those categories that month earns the base rate. For a household with a large grocery budget, the effective earn rate across the year ends up noticeably lower than the headline multiplier.
Our Amex Cobalt teardown has the current cap amount, the fallback rate, and how they interact with merchant acceptance.
Why Issuers Structure Rewards This Way
Spending caps are a standard risk-management tool. A promoted rate with no limit would be expensive for issuers to offer to very high-volume spenders, so the cap lets them advertise a compelling rate while keeping the card's economics sustainable.
That's a reasonable design choice. The cap is documented in the rewards terms, but it's easy to miss if you only read the marketing page, and many cardholders first notice it on a statement.
What to Look For
When you evaluate a rewards card with a high earn rate, ask:
- Is the cap per category or combined? A combined cap is more restrictive than separate per-category caps.
- Is it monthly or annual? An annual cap gives you more flexibility for uneven spending.
- What's the fallback rate? Some cards drop to 1x, others lower.
- Does your actual spending reach the cap? Compare the cap with what you actually spend each month in the categories it covers.
Cards With Notable Caps
- Amex Cobalt: one combined monthly cap across dining, groceries, and streaming. See the teardown for current figures.
- More teardowns are coming. Check the card directory for updates.
CardTruth.ca reads the cardholder agreement so you know what to look for. Every finding is sourced to a specific clause.