Earn 9,000 Avios: BA Amex Supplementary Card Bonus Returns

American Express has reintroduced a lucrative offer for holders of the free British Airways American Express Credit Card who have never previously added a supplementary cardholder. Until January 15, 2026, the bonus for adding a first supplementary card is significantly increased to 9,000 Avios. This is an exceptional deal, especially considering there is no minimum spend requirement for the supplementary cardholder to trigger the bonus, making it an incredibly easy way to accumulate a substantial amount of points. To put this into perspective, the bonus for a main cardholder taking out the card is only 5,000 Avios, highlighting the value of this particular promotion.

The primary benefit is the generous 9,000 Avios, which are awarded for simply adding a free supplementary card. While the small print mentions the Avios appearing in at least two instalments (1,000 and 8,000 points), past experience suggests the full 9,000 Avios typically credit at once, usually upon card approval. The key limitation, or “risk,” is that this offer is strictly for the *first* supplementary card added to an American Express account. Existing supplementary cardholders will not qualify for the bonus if they add another one. Furthermore, applicants *must* use a specific American Express application page to ensure the bonus tracks correctly; using any other page may result in the bonus not being applied.

Beyond the special BA Amex offer, other American Express cards also provide standard supplementary card bonuses when the first card is added, provided the specific link is used. Examples include 5,000 Membership Rewards points for The Platinum Card, 3,000 Avios for the British Airways American Express Premium Plus Card, 3,000 Marriott Bonvoy points for the Marriott Bonvoy American Express Credit Card, and 3,000 Nectar points for the Nectar Credit Card. Even cashback cards like Platinum Cashback offer a £5 bonus. This broad availability of supplementary card bonuses across various Amex products underscores a consistent incentive for cardholders to extend benefits to others, though the 9,000 Avios offer is currently the standout promotion.

(Source: https://www.headforpoints.com/2025/11/19/9000-avios-iupplementary-card-ba-amex/)