A possible shift in card rules could change how you pay at big retailers, pushing shoppers to rethink which credit cards really save money.

If you want to cancel your OnePay Walmart Spend Card or OnePay Cash Rewards Card, here is how to do it—and how it could affect your credit score.

Shoppers who rely on plastic for their weekly runs at Walmart and Target are about to feel a new kind of sticker shock. A ...