People see “American Express” and assume prestige equals credit benefit. It’s an understandable assumption — Amex has a reputation for high limits, loyal cardholders, and decades of history. So when buyers come to me asking about AmEx tradelines specifically, I get it. But there’s a catch most sellers won’t bother to explain, and it changes the math significantly.
[Related: buy tradelines from us or check the tradelines FAQ]
The Amex Authorized User Problem
Here’s the thing about American Express: since around February 2015, Amex reports authorized users with the date they were added as the account open date — not the card’s original open date. That’s a huge deal if you understand how tradelines work.
When you buy a tradeline, you’re typically paying for two things: the credit limit (which lowers your utilization) and the account age (which improves your average age of accounts). A 12-year-old Chase card with a $25,000 limit gives you both. A 12-year-old Amex card? You still get the limit, but on your credit report, that account shows up as however many days old it was when they added you. Not 12 years. Not even close.
So that prestigious 20-year Amex card a seller is pitching you? It looks like a brand-new account on your credit report the moment you’re added as an authorized user. That’s not a small footnote — it’s the whole ballgame for buyers hoping to age their credit history.
What an AmEx Tradeline Actually Does
It’s not worthless. An AmEx tradeline can still help your revolving utilization — if the card has a high limit and the primary cardholder keeps the balance low, that added available credit can nudge your utilization ratio down. For buyers whose main issue is utilization (not account age), that’s a real benefit.
But most buyers I talk to are looking for the full package: limit plus age. That’s the combination that moves scores most meaningfully, especially for people trying to qualify for a mortgage or a car loan where lenders want to see a deep, seasoned credit file. An AmEx tradeline delivers half of that.
Why Issuers Matter More Than Logos
One thing I tell every buyer who comes in with a preference for a specific card brand: once the data posts to your credit report, the issuer name is essentially irrelevant. A $30,000 Capital One card that’s 10 years old reports identically in terms of credit impact to a $30,000 Chase card that’s 10 years old. The logo doesn’t get scored.
What gets scored: the limit, the age, the utilization, and the payment history. Which is exactly why Amex is tricky — it’s strong on limit (Amex is known for generous credit lines) but it loses the age advantage entirely for authorized users. Capital One, Barclays, and US Bank are cards I’ve had better seller results with, and buyers benefit from the full age reporting those issuers provide.
The Pricing Reality
Because of this limitation, AmEx tradelines are usually priced lower than comparable cards from other issuers. A seller charging full price for an AmEx tradeline without disclosing the reporting quirk is doing you a disservice. (I’ve seen this more times than I’d like to admit — brokers listing Amex cards right alongside Chase and Capital One at similar prices, no asterisk.)
If you’re specifically comparing tradelines and see an Amex listed significantly cheaper than others with similar limits and history, now you know why. It’s not a deal — it’s priced to reflect what it actually delivers.
When an AmEx Tradeline Does Make Sense
There are buyers for whom an AmEx tradeline is actually the right call. If your credit file already has solid age — say you’ve got a few accounts from years back — and your main drag is utilization, adding a high-limit Amex as an authorized user can help without the age issue mattering much. You’re just buying the limit in that scenario, and Amex can deliver that.
Also, if budget is a constraint and you need some tradeline help, a discounted Amex card might get you part of the way there. Just go in with accurate expectations about what you’re getting.
If you want to understand how tradelines work in general before deciding on any specific card, the FAQ breaks it down clearly.
My Take
I don’t sell Amex tradelines specifically because of this reporting issue — it’s hard to look a buyer in the eye and say “this is worth $X” when half the value proposition is missing by design. The cards I list through my store and through brokers are ones where the age actually posts, which is what most buyers are paying for.
If you come across an AmEx tradeline listing, just make sure whoever’s selling it is upfront about the authorized user reporting change. If they’re not mentioning it at all, that tells you something too.
No — since around 2015, American Express reports authorized users with the date they were added as the open date, not the card’s original open date. This means a decades-old Amex card will appear as a new account on the authorized user’s credit report, eliminating one of the main benefits tradelines provide.
It depends on your situation. If your credit score is primarily dragged down by high utilization and you already have good account age, an AmEx tradeline’s high credit limit can help. If you need to age your credit history, look for tradelines from issuers that report the full account age to authorized users — Chase, Capital One, Barclays, and others.
Because Amex doesn’t report the original open date for authorized users, the age component of the tradeline’s value is missing. Reputable sellers price Amex tradelines lower to reflect this limitation. If you see an Amex tradeline priced the same as comparable non-Amex cards, ask questions before buying.
If you’re in the market for a tradeline, take a look at what I have for sale — I only list cards where the age posts correctly. Questions are welcome below.
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