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If you have an American Express card that earns Membership Rewards such as The Amex EveryDay® Credit Card from American Express or The Business Platinum® Card from American Express, one of the ways to redeem your points is by tying your card to your Amazon account. However, it’s usually far from one of the best redemption options. TPG values Membership Rewards at 1.9 cents apiece, but you’ll only get 0.7 cents per point if you redeem them at Amazon.

But right now the online retailer has a terrific offer — targeted but reportedly available to a fairly wide swath of customers — that may make it worth it to connect your Amex card to your Amazon account after all. As part of the lead up to its Prime Day sale on July 16, Amazon is currently offering 20% off on up to $500 in purchases when you use Membership Rewards for your purchase. However, the key is that you don’t have to pay for the purchase entirely with points — in fact, you can use as little as a single point, then pay for the rest of your order using your Amex card itself and still get the discount.

To activate this offer, you’ll need to connect an American Express card that earns Membership Rewards to your Amazon account, then activate the offer at this link. If you’re not targeted, you’ll be informed when you attempt to activate the offer, but if you’re eligible, you can proceed to shop for any items sold by Amazon or Amazon Digital Services (third-party sellers don’t count).

At checkout, in order to get the discount to apply to your order, you’ll need to select the Membership Rewards-earning American Express card that you previously connected to your account as the payment method. Then in the box where Amazon offers to let you apply points to your order, you only need to put in $0.01 worth of points, which will be equivalent to 1 point. Click “Use this payment method” and the 20% discount should show up in your total on the right side. The discount is capped at $100 since it only applies to up to $500 in purchases.

Even if you don’t have anything you currently need to buy at Amazon, you may want to consider looking at this offer anyway. That’s because Amazon sells a number of third-party gift cards, and though the terms and conditions of this offer specify that gift cards are not eligible, we’ve confirmed that if you add $100 or more worth of eligible merchandise or third-party gift cards to your cart, you’ll still get the 20% discount on them. In fact, once you have $100 of eligible items in your cart, you can even get 20% off an Amazon gift card if you add one to your order as well, up to the $500 maximum total.

The terms and conditions of this promotion don’t have an expiration date — rather, it only notes that it ends “when Amazon elects to end the promotion.” So if you want to take advantage of this discount, you should probably do it sooner rather than later.

H/T: Doctor of Credit via Mommy Points

Featured image by AdrianHancu / Getty Images.

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