American Express has a rule that sets it apart from most other card issuers: once you earn a sign-up bonus on a specific Amex card, you generally cannot earn it again. This "lifetime language" has been part of Amex's terms for years, and understanding it is essential for anyone planning a long-term churning strategy.
How the Rule Works
The standard Amex welcome offer terms include language along the lines of: "Welcome offer not available to applicants who have or have had this Card." In practice, this means if you opened an Amex Gold card five years ago and earned the sign-up bonus, you typically will not be eligible for the bonus again if you apply for a new Amex Gold today.
This applies per card product, not across the Amex portfolio. Earning the Gold card bonus does not prevent you from earning the Platinum bonus, and vice versa. Personal and business versions of similar cards are treated as separate products, so earning the personal Gold bonus does not block the Business Gold bonus.
Why This Matters for Churners
With most other issuers (Chase, Citi, Capital One), you can earn the same bonus again after a waiting period, typically 24 to 48 months. Amex's lifetime rule means each bonus is a one-time opportunity. This has two important implications.
First, timing matters more. If the Amex Platinum bonus is currently 80,000 points but has historically gone as high as 150,000 points, earning the lower bonus means you have permanently left those extra 70,000 points on the table. Patient churners often wait for elevated or targeted offers before applying.
Second, it changes the order of operations. Since each Amex bonus can only be earned once, many churners prioritize other issuers first and save Amex cards for when elevated offers appear.
Targeted and NLL Offers
There are occasional exceptions to the lifetime rule. Amex sometimes sends targeted offers, sometimes called "NLL" (No Lifetime Language) offers, that explicitly do not include the once-per-lifetime restriction. These appear as emails, in-app offers, or CardMatch results and are considered fair game.
If you receive a targeted offer that does not contain lifetime language, you can earn the bonus again even if you have had the card before. These offers are not guaranteed and cannot be reliably reproduced, but they do appear from time to time.
Strategies for Maximizing Amex Bonuses
Wait for elevated offers when possible. The Amex Gold has been available at 60,000, 75,000, and 90,000 points at various times. Check referral links, CardMatch, and incognito browser windows, as Amex sometimes shows different offers to different audiences.
Do not forget business cards. The Business Platinum, Business Gold, Blue Business Plus, and other business cards each have their own separate bonus eligibility. A churner can earn both the personal and business version of a card.
Keep records of when you opened and closed each Amex card. Even if you plan to never reopen a card, knowing your history helps you plan which cards you still have bonus eligibility for.
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