Primary versus authorized user
- Primary tradeline: you opened the account, you are legally responsible and it reflects your own behavior. Lenders usually give these more weight in a manual review.
- Authorized user tradeline: you are added to another person's card. The history may appear on your report, but you do not owe the debt under most card agreements.
- Business tradeline: tied to a business and usually reported to business bureaus, so it is a separate subject from personal credit.
What a tradeline can change
A strong tradeline adds positive data to several parts of a FICO score. It can extend your average account age, which ties to the 15% length of history factor. It can add available credit, which can reduce utilization in the 30% amounts owed factor. It also adds on time history to the 35% payment factor.
The effect is highly individual. Someone with one new card may see more change than a person with a dozen older accounts. And a new tradeline does not remove a recent charge off or collection. These items still count, which is why reviewing your reports first makes more sense than adding accounts blindly.
The risks of buying seats
Some companies sell temporary authorized user spots on strangers' cards. FICO has said its newer models are designed to limit the benefit from such arrangements, and issuers may close accounts they believe are being used this way. Lenders can also ask about these accounts or remove them when reviewing a mortgage file.
Costs can run into hundreds of dollars for a seat that may last only a couple of months, and the account usually falls off afterward. Be especially wary of anyone suggesting you misrepresent a relationship or claim someone else's account as your own. Misstating information on a credit application can create legal problems.
Better ways to add tradelines
We would start with free or low cost accounts that are genuinely yours or from someone you know:
- Family authorized user: a parent or partner with a long, clean card.
- Secured credit card: a deposit backed card from a bank or credit union that reports to all three bureaus.
- Credit builder loan: small installment history with savings at the end.
- Retail or starter unsecured cards: once a secured card has aged, these can add more limit.
Add accounts slowly, since each application can add a hard inquiry and new accounts reduce your average age. Two or three well managed accounts often provide what a scoring model needs, and building on them over time is what lenders tend to trust.
Questions people ask
How many tradelines do you need?
There is no required number. Lenders often like to see at least three active accounts with some history, but rules vary by loan type.
Do closed tradelines still count?
Closed accounts in good standing can remain on your report for up to ten years, and their history generally keeps counting during that time.
Are authorized user tradelines legal?
Yes, adding someone as an authorized user is a normal card feature. Problems start when someone lies on an application or misrepresents the account.