You'll earn money every time you shop at one of TopCashback's eligible retailers, but there are a few ways you can earn even more: Although TopCashback offers generous earnings on your online shopping purchases, it's not the only way to earn extra cash. Just don't try to use two cashback apps, such as Rakuten and TopCashback, at the same time; you'll earn cash back only from the last site or app you clicked through.