Ibotta stacking is stacking an Any Brand offer on the same product that is eligible for a Brand Name offer.
You can stack an Any Brand offer with a brand name offer but you cannot stack two brand name offers on the same item (unless you purchase enough products to satisfy each offer individually).
Offer stacking may also refer to combining paper coupons with Ibotta offers to increase the amount of cash back or reduce the amount out of pocket. Some Ibotta offers cannot be stacked with these other methods. See more information here: Can I use coupons or other promotions with Ibotta offers?
Additionally, Online Shopping offers usually cannot be combined with promotional codes, discount codes, coupon codes, or additional retailer coupons and promotions. Always check the offer details to be sure.