Stacking the £75 Amex Stays Credit With Marriott and Hilton Q3 Promos

UK domestic hotel prices are still stubbornly high right now. If you are paying cash for a stay this summer, relying on standard point-earning rates is a fast way to leave money on the table. We are currently sitting at the exact crossover point between Q2 and Q3 2026, which means a very specific, highly lucrative stacking opportunity is wide open.

The play is simple but the execution requires precision. You need to combine the current £75 ‘Amex Stays’ statement credit with the newly launched Q3 global promotions from Marriott Bonvoy and Hilton Honors. Booking this incorrectly will void your cashback, your bonus points, or both. Here is exactly how to navigate the small print and maximise your return on a £300 hotel spend.

Understanding the baseline Amex Stays offer

The current standout UK Amex Offer gives a £75 statement credit on £300 cumulative spend at participating UK hotels. That is a massive 25% return on exactly £300 of spend. You must save the offer to your card via the Amex app or website before making a transaction.

Because the spend is cumulative, you do not have to drop £300 in a single night. You can hit the threshold across multiple stays, provided all those stays are at participating properties within the same brand umbrella before the offer expiry date. The catch is that the transaction must code correctly. This means the payment must be processed directly by the physical hotel, not a central reservations desk.

If you recently picked up the Amex Gold card to secure the elevated 100,000 Membership Rewards sign-up bonus—which ends on 21 July 2026—this hotel offer is one of the easiest ways to hit your minimum spend while effectively subsidising the card’s annual fee.

Hilton Honors Q3 2026 promo math

Hilton’s Q3 global promotion offers Double Base Points on all stays between early July and September 2026. If you are staying in select major UK cities, including London and Manchester, this escalates to Triple Base Points. You must register for the promotion on the Hilton website before you check out.

Hotel loyalty programs calculate their points based on US Dollars, which means we have to factor in the exchange rate. As of June 2026, a £300 spend at a UK Hilton equates to roughly $385 USD. Hilton awards 10 base points per $1 spent. That gives you 3,850 base points.

With the Q3 Double Points promotion applied, you earn 7,700 Hilton points before any elite status bonuses are factored in. If you hold Gold status—perhaps via your Amex Platinum card—you receive an additional 80% bonus on the base points, adding another 3,080 points. You walk away with over 10,000 Hilton points and £75 cash back on a £300 spend.

Marriott Bonvoy Q3 2026 promo math

Marriott is offering a flat 2,500 bonus points per stay starting from your second stay during the Q3 2026 promotional period. They are sweetening the deal with an additional 500 bonus points if the stay is paid for with a co-branded card like the Marriott Bonvoy Amex.

Using the same £300 spend at roughly $385 USD, you earn 10 base points per $1, yielding 3,850 base points. If you factor in the 25% bonus for Gold Elite status, you get an extra 962 points. Add the 2,500 flat Q3 bonus, and a single stay yields 7,312 Marriott points. If you use the Marriott Bonvoy Amex, you get the extra 500 points, pushing you near 8,000.

For readers who prefer airline miles over hotel points, Marriott Bonvoy points transfer to British Airways Executive Club at a 3:1 ratio. A 7,300 Marriott point haul converts to roughly 2,433 Avios. Combined with the £75 Amex credit, this is an excellent return on a relatively short domestic stay.

Why booking through Amex Travel breaks the stack

Booking via the Amex Travel portal is the most common mistake people make when trying to use Amex Offers. If you book your hotel through Amex Travel, Expedia, or Booking.com, you will almost certainly break the stack.

Bookings made via Amex Travel are treated as third-party online travel agency bookings. The merchant will code as Amex Travel rather than the specific hotel, meaning you will not trigger the £75 Amex Stays cashback. Furthermore, Marriott and Hilton do not award loyalty points, elite night credits, or Q3 promotional bonuses on third-party bookings. You must book direct with the hotel to get both the cashback and the points.

Bypassing the advance purchase billing problem

If you book a prepaid ‘Advance Purchase’ rate directly on the Hilton or Marriott website, you might assume you are safe. Often, you are not. Advance purchase rates are frequently processed by a central corporate entity—like “Marriott Reservations”—rather than the physical hotel where you are staying.

Amex Offers strictly require the transaction to code from the specific participating property. If your stay is in August 2026 but the Amex offer expires in July, you cannot simply book a prepaid rate and hope it triggers.

The workaround is to book a flexible rate directly with the hotel. Once booked, call the physical front desk of the property. Explain that you would like to pay a £300 deposit toward your upcoming stay using the Amex card you have on file. Because the front desk staff manually process this payment on their local terminal, it codes correctly as the physical hotel and triggers your £75 statement credit before the deadline.

Practical strategies to hit the exact spend requirement

Getting exactly £300 of spend requires a bit of planning if your room rate falls just short or goes way over. Here are three specific ways to manage your bill at checkout.

Use the room charge buffer

If your room rate is £250, do not prepay it. Book a flexible rate and pay on departure. During your stay, dine at the hotel restaurant, order a drink at the bar, or book a spa treatment, and charge it to your room. As long as the final checkout folio hits £300 or more and is paid with your registered Amex, you will trigger the £75 cashback. You will also earn Marriott or Hilton Q3 points on that incidental spend.

Split the bill across supplementary cards

The £75 off £300 offer can often be saved on supplementary cards as well as the main account. If your total bill is £650 and you have the Amex Stays offer saved on both your primary card and your partner’s supplementary card, do not just tap one card for the whole amount.

Ask the receptionist to split the payment. Charge exactly £300 to the first card, and the remaining £350 to the supplementary card. You instantly double your cashback to £150, while still earning all your Q3 hotel points on the total £650 spend.

Check the exclusions list before booking

Do not assume every UK Marriott or Hilton is participating in the Amex Offer. Amex always provides a PDF link in the offer terms detailing the exact participating properties. High-end brands like Bulgari or certain franchised DoubleTrees are notoriously excluded from these lists. Always check the PDF before you commit to a booking.

My honest verdict on this 2026 hotel strategy

This direct booking stack wins by a landslide compared to standard online discounts. An OTA might offer you a 10% discount on a £300 room, saving you £30. Stacking direct yields £75 cash back, plus roughly £30 to £40 worth of Marriott or Hilton points via the Q3 promos, plus your elite night credits.

With the recent May 2026 change allowing BA Amex Companion Vouchers to be used on British Airways Holidays, you might be tempted to book a UK hotel package that way instead. Honestly, I’m not convinced the maths works for most people. BA Holidays bookings will not trigger the specific ‘Amex Stays’ £75 credit because the merchant is British Airways, not the hotel. You also will not earn Marriott or Hilton Q3 points on a BA Holidays package. Save your BA voucher for high-value long-haul flights, and use this Amex Stays stack for your domestic hotel hops.

If you want to read more about maximising your rewards this year, explore more guides on Points Uncovered.