Here’s a savings secret most shoppers overlook: you don’t have to choose between clipping coupons and racking up cash back. You can do both — at the exact same time, on the exact same receipt — and it works whether you’re pushing a cart through Aldi, loading up a flatbed at Costco, or hunting mini cooler totes at Trader Joe’s. The trick is knowing which “stacks” actually stack, because grocery chains have gotten a lot smarter about closing loopholes, and one wrong move means you’re leaving free money on the table.
We dug into how the savviest shoppers are combining store promos, rebate apps, and credit card rewards in 2026 — and it turns out the biggest wins have nothing to do with paper coupons at all.
Why “coupon stacking” looks different at every store
Aldi doesn’t accept manufacturer coupons at all — its whole model is built around automatic savings through weekly ALDI Finds and daily Price Drops instead. Costco has the same no-manufacturer-coupon policy at checkout. Trader Joe’s keeps things simple too, relying on everyday low prices rather than a circular full of clip-outs. So if you’re hunting for a classic “buy one, use two coupons” moment, you’re shopping the wrong stores. The real stacking happens after you’ve already paid, and it’s honestly more lucrative than old-school couponing ever was.
The receipt-scanning trick that pays you twice
Rebate apps like Ibotta operate completely outside any store’s system, which means they stack with everything else — sale prices, your Costco Executive 2% reward, even other cash-back apps. Snap a photo of your receipt after checkout, match it against a rotating list of eligible items, and the cash lands in your account within a day or two. The genius move shoppers are using right now: run the same receipt through Ibotta and a second app like Fetch or Shopkick, since Fetch rewards you just for scanning regardless of what’s on the list. Double-dip, same trip, zero extra effort.
“I wait for the online-only sale, then buy what’s on my list, and stack it by paying with a credit card that rewards me for that purchase.” — Todd Stearn, founder of The Money Manual, on his go-to Costco stacking method
Let your credit card do the heavy lifting
The single easiest stack requires zero extra apps: pay with the right card. Cards like the Blue Cash Preferred from American Express advertise strong cash back at U.S. supermarkets, while no-annual-fee options like the Citi Custom Cash can rotate grocery stores into their top cash-back category. Point that card at Aldi, Costco, or Trader Joe’s, layer a rebate app scan on top, and you’ve built a real stack without a single paper coupon in sight. It’s the same logic covered in our Costco membership hacks guide — the membership fee pays for itself fast once you’re combining it with the right payment method.
Don’t sleep on price adjustments
Costco’s 30-day price adjustment policy is the closest thing to a built-in coupon the store offers. Buy something, watch the price drop within a month, and you can walk up to the returns counter (or fill out an online form) for the difference back. It’s a quiet perk that pairs perfectly with the seasonal deals we flagged in Costco’s new August coupon book roundup — grab something now, and if it drops before the book expires, you get paid twice.
Bring it all together
None of these tricks require extreme-couponing-level effort — just a little intention at checkout. Pick a rewards credit card, download one or two rebate apps, and keep an eye on price drops for a month after you buy. Pair that with the everyday habits in our grocery shopping habits guide, and you’ve basically built your own loyalty program across three different stores that don’t even offer one.
Try it on your next trip: pick one rebate app, scan your very next receipt, and see how much free cash shows up. Then tell us in the comments which combo worked best for you!
Photo credits: Image 1 — Casper1774 Studio/Shutterstock via Mashed. Image 2 — Tada Images/Shutterstock via Mashed.
