Prime Day is a shopping event that often rivals major sales like Black Friday and Cyber Monday. We’ve already seen discounts of up to 50% on home goods, appliances, and electronics. Still, many are unaware of this Amazon hack that lets you stack deals to get an additional 20% off select items. 

If you’re shopping for the best Prime Day deals, use this hack whenever possible to maximize your savings.

How the hack works

Amazon offers a “Stock Up and Save” program that gives Prime customers a 20% discount when buying certain household essentials. The deal maxes out at $100 off, an incredible amount of money to save on the essentials you use most. Usually, you’d need to spend $50 to unlock this discount. However, you only need to spend $30 to unlock it during Prime Day.

Thrifty shoppers can double down on this discount by using it on items that are already on sale for Prime Day. For example, if you purchased over $30 worth of these Mama Bear diapers on sale for 15% off, you’d get an additional 20% off, adding up to a 35% discount.

Additional information on the Stock Up and Save program

  • You must be a Prime member: The additional 20% off is only available to Prime members. If you don’t have Prime currently, it’s worth checking to see if you qualify for a free trial. You can determine whether you qualify by checking Amazon’s Prime page.
  • It’s applied automatically: There are no extra steps to get the 20% off. Simply add $30 worth of eligible items to your cart, and you’ll see the discount appear.
  • It’s only available for Amazon-branded essentials: The Stock Up and Save program isn’t going to save you 20% on a new Nintendo Switch or laptop. This deal is reserved for items Amazon considers essential. This includes many pet, baby, kitchen and bathroom products.

Stack your savings on these everyday essentials

The hack is easy to use, but finding eligible products can be tricky. We’ve compiled a list of our favorite eligible products to make things easier.

Household essentials

Amazon Basics Trash Bags on white background

Pet products

Kitzy Wet Cat Food on white background

Baby products

Mama Bear Electrolyte Powder Packets on white powder

Health and wellness products

Sunscreen lotion on white background

Check out Prime Day deals here and be sure to bookmark this page to shop smart and stay in the loop on the best genius gadget discounts of the Prime Day sale. 

Visit our Prime Day sale hub for more deals.

Want to shop the best products at the best prices? Check out Daily Deals from BestReviews.

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Cody Stewart writes for BestReviews. BestReviews has helped millions of consumers simplify their purchasing decisions, saving them time and money.

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