Authorized User vs. Primary Tradelines: What's the Difference?

Not all tradelines work the same way. The two main kinds you’ll hear about are primary tradelines and authorized user (AU) tradelines.

Primary tradelines

A primary tradeline is an account in your own name. You applied for it, you’re legally responsible for it, and you control it. Examples: your own credit card, car loan or personal loan.

Pros: builds your own history and credit mix; lenders give it full weight.
Cons: you need to qualify for it, and every application is a hard inquiry.

Authorized user tradelines

An AU tradeline is an account owned by someone else that you’ve been added to. The account’s history can show up on your report even though you aren’t responsible for the debt.

Pros: can add age, a high limit and years of on-time payments almost immediately, with no credit check.
Cons: some lenders, especially in manual mortgage underwriting, may give it less weight; it doesn’t build a primary account history.

How credit scores treat authorized user accounts

Current FICO and VantageScore models include authorized user accounts in your score. FICO built safeguards into its models to limit abuse, but legitimate AU accounts on seasoned cards still count.

The best approach: use both

Many people use an authorized user tradeline to strengthen their profile and open one or two primary accounts, like a secured card, to build their own history. The AU tradeline helps your utilization and age, while your primary accounts prove you can manage credit yourself.

Ready to add a seasoned AU tradeline? Browse available tradelines.