Adding an authorized user is sometimes pitched as a way to keep a dormant card active without spending on it yourself. The strategy works at some issuers and quietly fails at others, and the credit-reporting consequences for the authorized user depend on what the primary cardholder does next.
Authorized user charges count toward the inactivity clock at most issuers, but not all. Capital One and Discover count AU activity exactly the same as primary activity. Chase and Bank of America count it but rely on the primary spending pattern more than activity alone. American Express does not consistently treat AU charges as reset events. If the card later closes, the AU loses the tradeline from their credit report too.
Try the demo → or jump to pricingWhat the AU sees versus what the primary sees
An authorized user (AU) gets a card in their name on the primary cardholder's account. They can charge. They cannot change the address, request a limit increase, dispute transactions, or close the account. They are not legally responsible for the balance — the primary is.
From the bank's point of view, an AU charge is still a transaction on the account. The account ledger does not distinguish between primary and AU charges in any way that affects the inactivity review at most issuers. From the credit bureau's point of view, the tradeline appears on both the primary's and the AU's reports — usually with the AU flag visible.
Does AU activity count toward the dormancy clock?
Mostly yes, but with issuer-by-issuer wrinkles that matter.
Capital One: AU activity counts identically to primary activity. A coffee charged by the AU resets the dormancy clock the same as a coffee charged by the primary.
Discover: Same as Capital One. AU charges fully count.
Chase: AU charges count for the clock, but Chase's inactivity reviews look at the primary cardholder's overall spending pattern across the household account. An account where the only activity is AU-driven for 12 months can still flag, even though the formal clock has been reset.
Bank of America: Counts AU charges, but accounts where the AU is the sole user often see credit-limit reductions before closure — the bank reads "only AU is using this card" as a softer engagement signal.
American Express: Most variable. AU charges sometimes count, sometimes do not, and the difference appears to correlate with whether the AU has any spending velocity on other Amex products. Amex's inactivity timelines are already unpredictable; adding an AU does not regularize them.
Citi: Counts AU activity. No special quirks observed.
What happens to the AU's score if the card closes
If the bank closes the card — for inactivity, for risk reasons, or for any reason — the tradeline drops from the AU's credit report along with the primary's. For an AU whose credit file is thin and was anchored by the primary's old high-limit card, the closure can be a meaningful score event.
This is one of the under-appreciated risks of the AU-on-a-dormant-card strategy. An authorized user benefits from a card's history and credit limit while the account is open; the moment the account closes, the AU loses both. The closure is reported the same way on the AU's file as on the primary's — closed by credit grantor, ten-year reporting clock from the closure date.
Removing an authorized user from a dormant card
If the AU strategy did not work — the card closed anyway, or the AU's behavior is creating exposure for the primary — removal is a single phone call. The agent removes the AU and the bank usually drops the tradeline from the AU's report within one to two reporting cycles.
Where this gets subtle: some bureaus retain the AU tradeline on the report for years after removal, especially if the account had a long positive history. Experian is the most consistent about retention; Equifax and TransUnion drop the tradeline faster. An AU who used a primary's card to build credit and then was removed may continue to see the score benefit for six to twelve months on at least one bureau.
Using AU strategically to keep a card active (the limits)
The strategy works best in tight family situations — spouse, adult child, sibling — where the AU is genuinely going to use the card on small charges every month or two. A $40-a-month grocery run is enough to keep the card alive on most issuers indefinitely.
The strategy fails when the AU is asked to be a strategic spender for someone else's tradeline maintenance. The novelty wears off, the AU's wallet has its own primary cards, and within six months the AU card is back in the drawer alongside the primary.
It also creates an awkward financial relationship. Every charge the AU makes is a debt the primary technically owes the bank. An AU who runs up an unexpected balance creates the kind of family friction that is hard to undo. For two or three dormant cards across a family, the AU approach is fine. Beyond that, the primary is better off running a tiny outbound charge themselves on each card and not entangling other people's behavior in the strategy.
If you are the AU, what to check
Two things, on the day the AU card arrives. First, confirm the primary's account is in good standing — a primary with a high-utilization, late-payment, or near-default account will pull the AU's score down as soon as the tradeline reports. Second, confirm that the issuer reports AU tradelines to the credit bureaus at all. Most do; a handful do not, which makes the AU position purely cosmetic from a credit-building perspective.
And from the AU's perspective on a card sitting cold: the safest assumption is that the card will eventually close, and the AU's credit file should not be structurally dependent on that tradeline staying open. A diversified credit file does not lean on someone else's card for its average age of accounts.