All mainstream credit card numbers obey a mathematical trick designed to catch the most common typos. It’s called the Luhn algorithm, named after IBM researcher Hans Peter Luhn, who patented it in ...

Former President Donald Trump's latest populist economic salvo has given credit card issuers a new headache, even though experts are dismissive of its chances. Processing Content The Republican ...

Years ago, one of my closest friends found himself staring down about $30,000 in credit card debt. He was juggling multiple cards, paying 20%+ interest, and was extremely overwhelmed. Then he ...

How much does credit card debt really cost you? Most people don’t even want to think about it, let alone do the math themselves. But with the federal reserve’s free and simple credit card repayment ...

Choosing the right cash-back credit card can lead to some quick savings. You can earn hundreds in cash-back rewards annually based on your spending. Are you ahead, or behind on retirement?

Credit card balances that never seem to shrink are usually a math problem, not a moral failing. When interest rates on ...

A few weeks ago, I was about to pay the HVAC technician who had repaired my home’s heat pump. Out of habit, I pulled a credit card from my wallet — I figured I’d earn rewards on this pricey ...

Out of habit, I pulled a credit card from my wallet — I figured I’d earn rewards on this pricey transaction — but then the tech warned me that his company assesses a 3% surcharge on credit card ...