AU tradelines — authorized user tradelines — come up constantly in conversations about building or rebuilding credit. The concept is simple enough: someone adds you to their credit card as an authorized user, that account’s history posts to your credit report, and your score reacts to the new data. But “simple concept” and “no nuances” are very different things, and there are enough quirks in how this actually works that it’s worth going through them properly.

Continue reading “AU Tradelines: What They Are and How They Work”




