If you hold an American Express card, there's a decent chance you've left real savings on the table without realising it. Amex Offers — targeted deals that give you bonus points or cash back at specific merchants — require you to actively enrol before you spend. Skip that step and the discount never applies, even if you meet every other condition.

The mechanics are simple. Log into your Amex account on desktop and scroll to the "Amex Offers and Benefits" section, or open the Offers tab in the mobile app. You'll see deals such as 10% back on a single Cracker Barrel purchase, and each one lists a spending requirement or a bonus rate. Enrol, hit the spending threshold before the offer expires, and the bonus typically posts within six to eight weeks. If it doesn't, call the number on the back of your card or use online chat.

A few rules matter for rewards enthusiasts. Offers vary by card, though there's often overlap within a card family — and if the same offer appears on two of your cards, you can only activate it on one. Pick the card where it stacks best: the Gold Card's offer above pairs nicely with its 4x points on restaurants worldwide (up to $50,000 of annual spending). There's no cap on how many offers you can hold at once, but some have limited payouts, so activate and use them quickly rather than letting them sit.

The real gains come from stacking. Amex Offers can be combined with third-party shopping portals like Rakuten, which lets Membership Rewards cardholders earn points instead of cash back, or Rove, which has more than 20 airline and hotel transfer partners plus strong shopping and travel deals. If you already pay for MaxRewards Gold (from $108 a year), it can auto-activate every Amex Offer on linked cards — though that subscription alone isn't worth buying just for this.

Why should holidaymakers care? Because many Amex cards charge annual fees in the hundreds of dollars, and offers are one of the easiest ways to claw that back on spending you were doing anyway — dinners out, hotel bookings, online shopping before a trip. It's not glamorous, but checking your offers tab once a week takes under a minute and can shave real money off travel costs.

Just track the expiry dates. The most common way to lose an offer is completing the purchase after it lapses, and Amex won't honour the bonus retroactively. Set a calendar reminder if you need to.

The Points Guy