WHOA, that’s a hefty APR! This could mean big trouble for those carrying a balance on their card.There are a few things you should know right off the bat about the TJX Rewards Platinum card. 1 point per $1 spent everywhere else Mastercard is accepted.5 points per $1 spent at TJX family of stores.TJX Rewards ® Platinum Mastercard and TJX Rewards ® World Mastercard ®