If you already have Walmart+, here is the trick in a nutshell: use the Burger King mobile discount from Walmart+, then pay for the discounted order with a Burger King gift card that you bought through Walmart using the Walmart credit card. That way, you stack the Burger King discount with the 5% cash back you earned when you bought the gift card.
It is not world-changing. It is not a path to early retirement. It is just a tidy little fast-food savings loop, and I enjoy that sort of thing more than is probably reasonable.
What that adds up to
In practical terms, that means a 25% Burger King discount can become an effective 28.75% savings. Burger King cuts the price first, reducing the total to 75% of the original price. Then, if the remaining 75% is paid with a gift card that earned 5% cash back through Walmart, that adds another 3.75% in effective savings. Add the two together, and the total effective discount is 28.75%.
That is a real number, not the usual internet-coupon nonsense where somebody "saves" money by spending twice as much as they meant to.
Why this works
That is the whole system. If you already have Walmart+, Walmart sells Burger King gift cards, and the Walmart card gives you 5% cash back on Walmart purchases, including those gift cards. So you can use the Burger King discount on the order itself, then use a Walmart-bought gift card to pay for what is left.
The reason this works is that Walmart+ includes Burger King perks when you connect your Walmart+ account to your Burger King Royal Perks account. Once connected, you get 25% off one mobile order per day and, every three months, a free Whopper with any paid order. Those are already solid perks by themselves, but the gift card angle gives you another layer of value.
In other words, Walmart accidentally helped me build a strange little coupon machine, and I am grateful for its service.
How to do it
Walmart's role in the system is simple: it sells Burger King gift cards, including e-gift cards that are delivered by email. If you have both Walmart+ and the Walmart credit card, those Walmart purchases earn 5% cash back. So when you buy a Burger King gift card through Walmart, you are effectively discounting the money you will later spend at Burger King.
In practice, the process is pretty simple. Build your order in the Burger King app and apply the Walmart+ Burger King discount. Once you know the total, buy a Burger King gift card through Walmart for about that amount. When the gift card arrives by email, load it into your Burger King account and use it to pay for the order. The discount lowers the price first, and the gift card purchase gives you a second layer of savings on the amount you actually pay.
Yes, this does mean sitting in a Burger King parking lot for a moment while you buy a gift card through Walmart so you can pay Burger King in the most roundabout way possible. But the e-gift cards arrive quickly, and the system works.
A note about the free Whopper
The free Whopper benefit can sometimes be even better, depending on the size of the order. If the value of the free Whopper is greater than what 25% off would save you, then the free Whopper is the better choice. But the 25% example is the cleanest way to explain the system, because it gives a clear and repeatable number: 28.75% effective savings.
As always, the free item is especially fun because it makes the savings look delightfully disproportionate, which is one of the great joys of deal-chasing.
The limits
There are a few limits. The Burger King offers do not stack with other Burger King discounts, so this works best on regular-priced mobile orders. And this is really a system for someone who already has Walmart+ and already gets enough value from it to justify the membership. It is not a reason by itself to sign up.
So no, I am not saying you should buy a Walmart+ membership just to engineer a more elegant Whopper transaction. I am saying that if you already have Walmart+, you might as well let the absurd little machine do its thing.
The bottom line
If you already have Walmart+, this is a neat little trick: Burger King provides the discount, Walmart provides the gift cards, and the Walmart card gives you cash back on the gift card purchase. Put the pieces together, and a good deal turns into a better one.
It is a small thing, but I like small systems that click neatly into place. This one just happens to end with a burger.