NEW: Big bonuses for adding supplementary cards to Amex Gold and Platinum

American Express has launched a special offer for anyone who holds the American Express Preferred Rewards Gold Credit Card or The Platinum Card and has never added a free supplementary cardholder.

Until 31st October, the bonus for adding your first Gold supplementary card is tripled to 9,000 Membership Rewards points.

The bonus for adding your first Platinum supplementary card is increased from 5,000 to 12,000 Membership Rewards points.

There is no spend target to hit on the supplementary cards.

This offer will double-up with the current special sign-up bonuses of 40,000 Membership Rewards points on Gold and 80,000 Membership Rewards points on Platinum.

Your first supplementary card is free so this is a very easy pile of points.

This offer is only available on the FIRST supplementary card added to your American Express account. If you already have a supplementary card in issue, you will not get the bonus if you add another one to the same account.

You MUST use this page of the American Express website to add your supplementary card.

Gold and Platinum currently have big sign-up bonuses too

American Express is currently running a great sign-up bonus of:

• 40,000 Membership Rewards points when you get Preferred Rewards Gold and

• 80,000 Membership Rewards points when you get The Platinum Card

These would convert to 40,000 or 80,000 Avios amongst things.

You can read more about the Gold offer in this HfP article. The application form is here.

You can read more about the Platinum offer in this HfP article. The application form is here.

These offers will stack. Do NOT apply for a supplementary card as part of your Preferred Rewards Gold or The Platinum Card application. Wait until your card arrives and then add a supplementary card via this link. If you do it by 31st October you’ll get the additional 9,000 (Gold) or 12,000 (Platinum) Membership Rewards points on top of the 40,000 or 80,000 points.

Other cards also have special supplementary card bonuses

American Express is also running special bonuses for adding your first supplementary card to:

• Marriott Bonvoy American Express Credit Card – 6,000 Marriott Bonvoy points (usually 3,000 Marriott Bonvoy points)

• Nectar Credit Card – 6,000 Nectar points (usually 3,000 Nectar points)

• Platinum Cashback Credit Card – £30 cashback (usually £5 cashback)

• Platinum Cashback Everyday Credit Card – £25 cashback (usually £5 cashback)

The usual bonuses – as long as you apply via the link above – are available on other key American Express cards when you add your FIRST supplementary card:

• The American Express Rewards Credit Card – 2,000 Membership Rewards points
• British Airways American Express Credit Card – 1,000 Avios
• British Airways American Express Premium Plus Card – 3,000 Avios
• The Harrods American Express Card – 1,000 Harrods Rewards points

How long does the offer run?

The special offer on supplementary cards for American Express Preferred Rewards Gold and The Platinum Card runs to 31st October.

If you have never issued a supplementary card in the past on your current Amex Gold or Amex Platinum card, now is as good a time as you will get.

You must use this special page of the American Express website to add your supplementary card. If you use any other page of the Amex website, your bonus will not track.

Thanks to Joe for flagging.