I have the Citi Double Cash Card, which gives 2% cash back. Spend $3,800, and you get 3,800 points when you buy and another 3,800 when you pay it off, which equals a $76 statement credit.
Don’t use the points at checkout on PayPal or Walmart they discount the value. Instead, use them to pay off your card to get the full 2%!
For maximum benefit, direct deposit the rewards into your bank. This way, you also earn points for what you pay off!