People who ask about tradelines usually hit the same wall once they understand the basics: “I already have a car loan — why would a credit card do more for my score?” It’s a fair question. Both are credit accounts, both show on your report, both require monthly payments. But the scoring models treat revolving and installment credit differently, and once you understand why, the mechanics of tradelines start to make a lot more sense.
The short version: revolving credit (credit cards) is where most of the scoring action happens, especially for utilization. Installment loans matter too — but for different reasons, through different levers.





