People google “best place to buy tradelines” and land on a lot of posts written by the same brokers they’re trying to evaluate. I sell tradelines directly on this site, so I have a bias too — but I also sell through brokers, which means I’ve seen how both sides of the market work. Here’s my honest take.
How the tradeline market is structured
There are two ways to buy an authorized user tradeline: through a broker, or directly from the cardholder.
Brokers are companies that maintain a network of cardholders willing to rent out AU slots. You browse their inventory, pick a card based on limit and age, pay the listed price, and the broker coordinates the add. The main names I’ve worked with on the seller side are Tradeline Supply Company (the largest), Boost Credit 101, Improve My Credit Fitness, and Coast Tradelines. These are legitimate operations — they have processes in place, they handle the logistics, and they offer some buyer protection if a card doesn’t post correctly.
The catch is what brokers cost. They typically keep around 70% of what you pay. The cardholder — the actual person adding you — gets the remaining 30%. That markup funds the broker’s infrastructure and customer service, but it means you’re paying significantly more than the cardholder’s floor price for the same card.
Buying direct (from a site like this one, or through a trusted private seller) cuts out that middleman margin. The tradeoff is that you’re relying more on the seller’s reputation and less on a structured platform with formal dispute processes.
Facebook groups: proceed carefully
There are Facebook groups specifically for tradeline buyers and sellers — I’ve seen a couple of them. They can surface options you won’t find on the main broker platforms, and in theory you could negotiate directly with a seller. In practice, most of these groups are controlled tightly by a moderator who is also trying to sell their own inventory. (You’ll notice offers from other sellers tend to get buried pretty fast.) They’re worth knowing about, but I wouldn’t start there if you’re new to this.
What actually matters: the card, not the source
Here’s something the broker comparison sites don’t emphasize enough: the platform you buy from matters less than the card you pick. A $30,000, 10-year Capital One card has the same effect on your report as a $30,000, 10-year Chase card. The issuer name is irrelevant once the data hits your credit file. Buyers often pay a premium for Chase cards because the brand feels more prestigious — but your score doesn’t care about brand recognition.
What your score does care about:
Credit limit. A higher limit on the tradeline means more available credit in the denominator of your utilization calculation. A $40,000 card added to a file with $5,000 in existing balances and $10,000 in existing limits takes your utilization from 50% down to 10%. That’s meaningful.
Account age. The older the card, the more it pulls your average account age upward. Five years is a reasonable minimum; ten-plus is better. Just know that American Express changed how they report authorized users around 2015 — instead of transferring the card’s original open date to your report, Amex now reports the date you were added as the open date. So a 20-year-old Amex card added yesterday looks like a brand-new account on your file. (I had a buyer who bought an Amex tradeline elsewhere expecting an age boost that never came — they had no idea about the policy change. I ended up explaining it and refunding them for one of my non-Amex cards. Not a fun call.) Stick to non-Amex issuers when age is what you’re after.
Balance on the tradeline card. A card with a $40,000 limit but a $38,000 balance is adding high per-card utilization to your report. You want high limit and low balance — ideally under 10% utilization on the card itself.
Red flags worth knowing
A few things should make you hesitate regardless of where you’re buying:
Sellers or platforms pushing CPNs — Credit Privacy Numbers — as an alternative or complement to tradelines. CPNs are synthetic identity fraud, full stop. Using a CPN on a credit application is a federal crime. Any operation that mentions CPNs as an option isn’t a place to do business. The same caution applies to anyone advertising primary tradelines for sale — you can’t actually buy primary ownership of an account, so that phrasing is usually cover for one of these schemes.
Guaranteed score increases by a specific number. Legitimate sellers can tell you what a card’s limit and age are; they can’t tell you exactly how many points you’ll gain, because that depends on your existing file, which scoring model the lender pulls, and factors neither of you control. If someone’s promising you 150 points, they’re selling you something.
Citi cards with a perfect track record on posting. Citi is notorious in the seller community for missing authorized user postings — the AU addition goes in, the card doesn’t show up on the buyer’s report. It happens often enough that Citi cards are generally considered less reliable than other issuers. Worth asking the seller about their posting history if you’re considering a Citi card.
What tradelines won’t fix
I say this on every tradeline post because buyers sometimes find out too late: tradelines are for thin files, not damaged ones. If you have derogatory marks — collections, charge-offs, late payments — adding an authorized user account won’t hide them. Lenders see the full report. A tradeline can make a clean thin file look significantly stronger, but it can’t paper over a charge-off that a mortgage underwriter is going to find anyway.
If your file has negatives, the work comes first: disputes for inaccurate items, pay-for-delete negotiation for collections, or just letting time do its thing with the 7-year clock. Tradelines are the last step, not the first.
Where I’d start
If you want to go through an established broker, Tradeline Supply Company and Boost Credit 101 are the ones I’ve had the most experience with on the seller side — they have real inventory, real processes, and real customer service. You’ll pay more, but you’re getting some accountability with the purchase.
If you want to buy direct and save the broker margin, you can browse my current inventory on the tradelines for sale page. Cards are listed with limit, age, and pricing. The tradelines FAQ explains the full process — what happens after you order, how the add works, when it posts. And if you want to talk through your specific situation before buying, the contact form is the best way to reach me.
If you want to learn more about how to how to buy a tradeline, that post covers the process end to end. Related: Best Tradeline Website — worth reading if this applies to you.
If you want to learn more about how to how to get tradelines for free, that post covers the process end to end. If you want to learn more about how to tradelines for sale 2026, that post covers it end to end.
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