Many credit cards offer you cashback on your purchases. Almost all cashback cards now offer you at least 1% cashback on all your purchases, only a few offers as much as 5%. The catch is that the categories rotate every quarter and you have to opt in online. Below are the 5% rotating categories for October to December of 2016.
Earn 5% cashback on up to $1,500 in combined purchases at Department Stores, Drug Stores and Wholesale Clubs such as Costco, BJ's and Sam's Club from October 1 - December 31, 2016. Activate by December 14, 2016. See FAQs for more information.
Earn 5% cashback on eligible purchases at Bestbuy and Department Stores between October 1, 2016 - December 31, 2016. The offer becomes active within 2 business days of when you enroll in this offer, or October 1, 2016, whichever is later. Note that there is no quarterly benefit limit but your cashback is limited to $300 per year. See this link for details and the cashback calendar for the remainder of 2016.
Earn 5% Cashback Bonus on up to $1,500 in purchases at Amazon.com, Department Stores & Sam's Club from October 1, 2016 (or the date on which you sign up, whichever is later) through December 31, 2016. Purchases made using tap-and-pay, mobile or wireless card readers, virtual wallets or similar technology may not be eligible. See Terms and Conditions for more information.
FOR PURCHASES FALLING OUTSIDE THESE ROTATING 5% CASHBACK CATEGORIES...
My go-to cashback credit card is the CITI DOUBLECASH card. Unlimited 2% cashback on all purchases - 1% when you buy and 1% when you pay your bill. No annual fee. No watching the calendar. No category tracking. No headaches. You can learn more about it here.