We've all seen the dreaded "cash only" sign on the windows of restaurants or mom-and-pop shops that don't accept credit cards. But the growth of smartphones has enabled retailers and consumers to ...

Last month while I was working on a story about the credit-card industry, I realized I didn’t know the APR on my own credit card. As a personal-finance reporter, this felt like a cardinal sin, so I ...

Natalie Campisi is a senior journalist who covers personal finance, balancing timely news with in-depth enterprise reporting. Her mission is to make complex financial issues clear and accessible for ...