How to Choose a Tradeline: A Buyer’s Guide

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How to Choose a Tradeline: A Buyer’s Guide

Choosing the right tradelines for your credit can be a challenge. Learn more about how to choose the right authorized user tradelines to buy using our helpful buyer's guide.

*Click here to check your utilization ratios and average age of accounts with our custom calculator!*How to Choose a Tradeline

Understanding How to Choose the Best Tradelines

If you’re just starting out in the world of tradelines, we recommend taking a look at our Tradelines 101 infographic as well as our Tradeline FAQs and Knowledge Center to get the basics down before moving on to deciding which tradelines to purchase. If you’re already familiar with the concept of tradelines and want to learn how to select the best tradelines for sale, then this tradeline buyer’s guide is for you.

When shopping to buy tradelines, there are basically only two main variables to consider:

(1) the age of the tradeline, and

(2) the credit limit of the tradeline.

All the other variables should be about equal, which includes having a perfect payment history, having low utilization (at or below 15%), the type of account (usually a credit card), and the reporting date of the account.

In most cases, if you buy from a reliable tradeline company, the name of the bank should not matter, except in instances where you may be blacklisted from that bank due to filing for bankruptcy or having unpaid collections with that bank.

So, with only two variables to consider, why is it so challenging to be able to choose the right tradelines? The answer is that most people’s credit files are fairly complex due to their depth of credit history. People have numerous data points in their credit file and all that data plays some sort of role in calculating their credit score.

Every person’s credit file is unique, making it very difficult to discuss how tradelines may affect anyone “on average.” Additionally, there are multiple different credit scoring models, each with their own proprietary algorithm that takes into account a very large number of data points within someone’s credit report.

When choosing the best tradelines for your situation, it’s not just about buying the top tradelines in terms of price. To make the right decision, you will need to have an understanding of what is already in your credit file and how tradelines could add to your file.

Credit Limits and Utilization Ratios

Adding tradelines to credit file

Most people’s credit files contain a lot of complex information, which can make it difficult to predict how adding tradelines will affect one’s credit.

Let’s discuss each of these variables individually, starting with credit limits.

In most of the free credit score simulators out there, you can only change a very limited number of variables. So when it comes to trying to guess how a tradeline may affect your credit score, it usually only allows you to enter a new credit limit amount and then it generates a new credit score estimate.

The credit score simulator (sometimes referred to as a credit score calculator) assumes you are opening a new credit card with whatever limit you type in. Essentially, it is only looking at your overall utilization ratio, and not taking into account the age that you would gain from adding a seasoned tradeline.

As far as utilization, many professionals would suggest that you want to stay below 20% ideally. From our experience, we have seen that utilization ratios of 30% – 40% or higher start to pull credit scores down significantly.

The higher the utilization ratio, the more your credit score will decrease, even if these accounts are always paid on time. Most credit specialists would recommend keeping your overall utilization ratio below 20% or even lower.

However, things get much more complicated in instances where someone has several credit cards with different utilization ratios.

Let’s say for example that someone has seven established credit cards, where two have zero balances, two are at 50% utilization, one is at 75%, and the last two are completely maxed out.

Sure, buying some tradelines with high limits might be able to get the overall utilization down to the targeted 20% level, but that does not eliminate the fact that that person still has five credit cards with high utilization, and each of these five cards is pulling down the credit score down due to high individual utilization.

Can a High-Limit Tradeline Help Lower Someone’s Overall Utilization Ratio?

In theory, a higher-limit tradeline can help lower someone’s overall utilization ratio, but this alone may not completely solve the problem of having credit cards with high utilization. Negative factors are always going to play a role in the credit score and having any high-utilization credit cards is a negative factor.

However, having a lower overall utilization ratio would be a positive change and may still yield some benefit despite the fact that the individual credit cards with high utilization will still remain in the equation.

Individual vs. Overall Utilization - Pinterest

We have even heard of metrics in the secret credit score algorithm that look at the percentage of high-utilization credit cards in someone’s credit file relative to the total number of credit cards they have.

For example, if someone has two credit cards, one with a $5,000 limit where they owe $5,000 on it and another credit card with a $25,000 limit where they owe zero on it, their overall utilization ratio is relatively low at 16.67% but they would be at 50% on the percentage of revolving accounts with high utilization. In this example, the 50% ratio of high utilization cards could possibly have a negative impact even though the overall utilization ratio is within the ideal range.

For more on this, see our article on overall utilization vs. individual utilization and how tradelines can play a role in these factors.

There may also be other reasons why some people are interested in adding higher-limit tradelines to their credit file that have nothing to do with utilization.

For example, some people believe that having higher-limit accounts in their credit file may increase their odds of getting approved for higher-limit credit cards or other types of loans. We do not have any knowledge about the validity of these beliefs, nor do we help people with funding in any way, but we are aware that such strategies exist in the marketplace.

This is an additional reason why some individuals might be interested in a high-limit tradeline even if there is not very much age on the account, which also makes the cost of a tradeline cheaper.

Examining the Age of a Tradeline

Factors that affect your credit score by Tradeline Supply Company, LLC

This leads us to the second variable to discuss, which is the age of the tradeline. We feel that age is the most important of the two factors of a tradeline. In general, a credit score is broken down into the following categories:

  • 35% your payment history
  • 30% how much you owe
  • 15% length of credit history
  • 10% credit mix
  • 10% new credit

The utilization ratios fall under the “how much you owe” category, which accounts for about 30% of your score. Again, if you are only improving the overall utilization ratio but you are still being pulled down by individual card utilization ratios, then you may not be benefitting from the full 30% of the power of this category. Your benefit may be as little as 10-15% if you still have individual cards with high utilization ratios.

However, the tradelines we offer are going to have a perfect payment history, which is the category that can affect your score by as much as 35%. They also have the ability to affect the “length of credit history” category which accounts for another 15% of the score.

When added together, the payment history (35%) plus the length of credit history (15%) amounts to about 50% of a credit score. These two categories, which account for about 50% of a credit score, are both affected by the age of the tradelines.

This is why we believe age is the most important factor of tradelines, making “seasoned” tradelines the most valuable type.

Seasoned tradelines

“Seasoned” tradelines, or those that are at least two years old, are the most valuable type of tradeline.

In the age category, just like the utilization category, there are several different variables. To name a few, the credit score algorithm may look at your average age of accounts, the oldest account in your profile, the number or percentage of non-seasoned accounts (less than 2 years old) in your file as well as the number or percentage of seasoned accounts in your file.

Also, different scoring models may or may not include data on closed accounts and have varying degrees of how much weight they give to closed account information.

To illustrate an example, we have seen a credit report of a person who had over a 700 credit score with no open accounts at all. So 100% of that 700+ credit score was made up of data from closed accounts only.

We also know the opposite can be true, where someone has zero open accounts but several closed accounts with derogatory information and their credit score is very low, all from closed account data. So it is safe to say that closed accounts can still play a significant role in someone’s credit score since it is still part of their credit history.

One of the most important variables related to the length of credit history is the age of the oldest account in someone’s credit profile. This variable is very straightforward, except that it may be split into two categories: open accounts and closed accounts. It is assumed that open accounts usually weigh more than closed accounts and obviously, older accounts are better.

The most common age-related variable that most credit advisors will talk about is the average age of accounts. It is commonly believed that the average age of accounts may be the most powerful factor in the age category.

As we will see in the examples below, in working with tradelines, most people underestimate how difficult it is to significantly affect an average, especially when there are multiple accounts already in your credit history.

Calculating Your Average Age of Accounts

For illustration, here are a few hypothetical examples of how to calculate the average age of accounts and how new tradeline data gets factored in.

Example 1: Thin File for Simple Illustration

  • Card 1: 0.5 years old
  • Card 2: 0.5 years old
  • Card 3: 1.5 years old

The average age of accounts in this example is 0.83 years. The way you figure that out is to add up the total number of years and divide that by the total number of accounts. (0.5 + 0.5 + 1.5 = 2.5 years total, then divide by 3 = 0.83 years average.)

If your goal was to get the average age of accounts up to 2 years old by adding one tradeline, the new tradeline would have to be about 6 years old. (0.5 + 0.5 + 1.5 + 6 = 8.5 total years divided by 4 total accounts = 2.1 average age of accounts.)

Notice how much older the new tradeline had to be in order to simply get the average age of accounts to be 2 years old for a very thin file. Many people would not have guessed that they would need such an old card just to get the average to be 2 years old.

To illustrate this point, if someone were to only add a 4-year-old tradeline to this mix, the average age of accounts would then only be 1.6 years, and this is assuming a person only has 3 revolving accounts (opened or closed) in their credit file, which is very rare.

The more accounts a person has, the less impact a single tradeline will have due to the simple mathematics of calculating an average.

Example 2: Established Credit File With Multiple Open & Closed Accounts

Tradelines affect average age of accounts

The more accounts there are in your credit file, the more difficult it will be to affect the average age of accounts.

  • Card 1: 4 years old
  • Card 2: 8 years old
  • Card 3: 6 years old
  • Card 4: 4 years old
  • Card 5: 7 years old
  • Card 6: 7 years old (closed account)
  • Card 7: 15 years old (closed account)
  • Card 8: 13 years old (closed account)
  • Card 9: 9 years old (closed account)
  • Card 10: 12 years old (closed account)

The average age of accounts here is 8.5 years old. The way you calculate that is to add up the total number of years and divide that by the total number of accounts. (4 + 8 + 6 + 4 + 7 + 7 + 15 + 13 + 9 + 12 = 85 years, divided by 10 accounts = 8.5 years average age of accounts.)

Let’s say hypothetically that the person’s goal is to get their average age of accounts up to 10 years old by adding a single tradeline.

Please stop and take a moment to guess how many years old a new tradeline would need to be in order to make the average age of accounts 10 years in this example.

The Answer:

They would need to add a tradeline that is 25 years old in order to get the average age of accounts to be 10 years. (4 + 8 + 6 + 4 + 7 + 7 + 15 + 13 + 9 + 12 + 25 = 110 total years divided by 11 total accounts = 10 year average age of accounts.)

Notice how huge of a jump in years is needed in order to change someone’s average if they already have a lot of accounts in their credit file, even if some of them are closed accounts. Most people underestimate how difficult it is to really change an average and even most “professionals” (who are usually just commissioned salespeople) underestimate how these numbers actually work out.

Our tradeline calculator can help you figure out how buying tradelines could affect your credit.

Our tradeline calculator can help you figure out how buying tradelines could affect your credit.

Until you actually do the math yourself, do not just blindly trust what someone suggests for you. To easily calculate your own average age of accounts and utilization ratios and see how those variables change when you add seasoned tradelines, try out our Tradeline Calculator.

A Common Mistake People Make When Buying Tradelines

It is easy to see how, in the second example above, if this person did not do the math, they might purchase the wrong tradeline and be disappointed.

Let’s say they purchased a tradeline that is 18 years old with a $20,000 credit limit that cost $1,000. They might just assume that since it was an expensive tradeline with a lot of age and a high limit that it should “obviously” be super powerful and they should definitely see positive results.

However, in reality, the 18-year-old card would only increase the average age of accounts to 9.4 years, and it is very possible that increasing one’s average age of accounts from 8.5 years to 9.4 years may not have very much of an impact on their overall credit picture. Our research shows that there are specific age levels that need to be achieved in order to experience the maximum impact of tradelines.

As you can imagine, this person could easily be very disappointed in their results for the reason that they simply did not do the math and were not aware of how to choose the best tradeline for their credit file.

As another example, what if this person were to choose to purchase a tradeline that is 7 years old with a $30,000 limit? On the surface, that might look like a decent tradeline to buy, but it would actually decrease their average age of accounts and consequently, it could even hurt their credit score, even though that tradeline might have a $750-$1,000 price tag.

We illustrate this to show that not knowing how tradelines work can actually hurt your credit and be a complete waste of money. For this reason, we believe education is the best service we can offer. Make sure to understand the #1 secret on how to unlock the power of tradelines and read our list of common mistakes made when buying tradelines to become aware of other pitfalls to avoid.

Tradeline Credit Strategy

Conclusions on Choosing the Best Authorized User Tradelines

Authorized user tradelines can be a good option for many people, assuming that they purchase superior tradelines to those that are already in their credit file. On the other hand, since many people are not educated about how the system works, it can be easy for people to choose the wrong tradelines that do not help them very much.

Compounding the confusion, it is very difficult to find the best tradeline company to work with. We believe that educating our customers is the best thing that we can do for our community and offering affordable tradelines helps create equal credit opportunity by making them more accessible to the people who need them most.

Use our Tradeline Calculator to help you understand the key factors relating to the tradelines in your credit file and to help point you in the right direction for your next tradeline.

Additional Resources to Help You Choose Tradelines

Tradeline Supply Company, LLC
Tradeline Supply Company, LLC
House copywriter at Tradeline Supply Company with articles about personal finance, credit repair, credit cards, and credit score information.


  1. Damien Johnson says:

    love how you guys Give Free Education wow !

    • Tradeline Supply Company, LLC says:

      Thanks Damien! We love being able to provide new, quality information. If you have any suggestions for article topics please let us know.

    • tami says:

      I love it also; people pay a lot for stuff like this. I see how people scam people for this information and it is free. I am glad I didn’t fall in the hands of them people.

      • Tradeline Supply Company, LLC says:

        We’re glad our content has been helpful for you! Thank you for reading and commenting!

        • Pamela Truesdale says:

          I need a tradeline that’s gonna report to my equafax.

          • Tradeline Supply Company, LLC says:

            Hi Pamela, all of our tradelines report to all three credit bureaus. However, our guarantee is that the tradelines will post to at least two of the three bureaus because the banks and credit bureaus sometimes have reporting errors. Unfortunately, we cannot guarantee posting to a specific credit bureau because that is not in our control. If it is important for a tradeline to post to a specific credit bureau, consider purchasing more than one tradeline in case one does not post to that credit bureau.
            Find more info on our guarantees here:

      • Frederick Barnes says:

        Tami, this is Fredrick; did I speak to you last night with D? I’m trying to reach you.

  2. Kemberly S. says:

    I was just inquiring about the Tradelines because I have the Credit Secrets book and it never mentioned about how and where else a Tradeline could be purchased. They did charge a fee just to get into a video about three main Tradelines used. I have two but wanted to know if the score that I have will go down after tradeline leaves.

  3. Tee Price says:

    Do you forsee the effectiveness of tradelines going down in the forseeable future? And authorized user tradelines alone may not help much is what i have seen. I ask because i am getting my credit repaired now. And know that you should not add tradelines to bad credit.

    • Tradeline Supply Company, LLC says:

      Tradelines have been around since credit was invented. We don’t expect them to be going anywhere.

  4. Jeff K says:

    I was more interested in adding a trade line to a “STARTUP” business. Would it help jump start the business credit better than my own since I’m coming out of a Chapter 13??? Approx. Mar-Apr of 2019!!!

    • Tradeline Supply Company, LLC says:

      Our tradelines are only for personal use, however most new business credit begins with personal credit.

  5. Romania Cunningham says:

    How much will one tradeline cost?if i decide get one how will have pay? Thank you!

  6. Clifton g sharps says:

    Which best trade line to get. 634 Experian 628 Equifax 585tranunion

    • Tradeline Supply Company, LLC says:

      It depends on all the factors mentioned in the article. Give us a call if you still need help, 619-255-9588.

  7. Graham says:

    So according to the formula that was given above in regards to calculating the average of account, how would one calculate their credit file that has a portion of the file is their own personal credit accounts and the other portion is they are added as authorized users on a few other accounts themselves. How would you calculate the average in this case? Ex. Personal Capital One 6 years, 3 personal revolving accounts 2 years, 2 closed personal department store cards 4 years, added as an authorized user on 4 different credit cards(Capital One, Citibank, Discover, etc) years span from 2-4 years and authorized user on 2 department store cards 6-10 years old. Thanks

    • Tradeline Supply Company, LLC says:

      There’s not a hard and fast rule to calculate average ages for primary vs authorized user tradelines or open vs closed tradelines. The algorithm FICO uses is secret and also varies based on the bureau and scoring model as well. We generally just consider open accounts and treat them the same whether they are primaries or AU’s, however closed accounts definitely have value too.

  8. Latisha Haynes says:

    I heard AU lines doont work any more. Maybe i herd wrong. do your services improve my credit report or no?

  9. Tyronne Atterberry says:

    I don’t have any opened or closed accounts in regards to a credit card, I have zero credit card history. Would I benefit from purchasing a single tradeline?

    • Tradeline Supply Company, LLC says:

      Yes, the tradeline would add a revolving account to your credit file.

  10. Jose says:

    I’m in the process of getting my credit repair, I’m trying to get a loan for a house, I need a tradeline that will boost my Equifax, any suggestions?

    • Tradeline Supply Company, LLC says:

      We are unable to guarantee any one specific bureau, however by default all of the banks we work with report to all 3 bureaus.

  11. Robert Bethune says:

    Yes ive been studying your sitevfor a few weeks now, and i think that i realize what the best solution for my issues is going to be, and which Tradelines would have the greatest positive impact on my situation. So i appreciate the education on the subject.

  12. Miasha says:

    Hello, I did a trade line before, I’m not sure how could I go about doing another one. Could anyone give me pointers?

    • Tradeline Supply Company, LLC says:

      Hello Miasha. You can purchase tradelines right through our website. If you have further questions give us a call at 619-255-9588.

    • Kimberly Watson says:

      How did the first trade line you purchased effect your credit if you don’t mind me asking?

  13. says:

    Can you split payments when purchasing your tradeline?

  14. Dude says:

    How long do the traddlines reflect on your credit upon purchase?

  15. Donovan Chandler says:

    How long will the purchased tradeline stay on my credit report?

  16. Capri La says:

    How long will these tradelines appear on my credit reports. Which credit bureaus will the tradelines appear? Will it be all or just specific credit bureaus?

  17. Sharellblakley says:

    I have NO credit. Absolutely nothing on my credit report file. How many tradelines do I need to have a 700 credit score?

  18. Dwane Evans says:

    My isn’t that good . I have someone on it now . I want to get a home an refinance my motorcycle. I’m in need of a couple big credit cards for my truck for repairs an fuel. What do you think

  19. Karemau says:

    Hey I have purchased a tradeline oct 31st my statement date is the 10th of November. Is that good & will I be able to meet the standard of the report date this month? Or how long will be the actual time I will be waiting

  20. Montey Jones says:

    Are you open Monday

    • Tradeline Supply Company, LLC says:

      Yes, we will be open our normal business hours tomorrow, 7am – 7pm pst.

  21. David jolivette says:

    I still don’t know witch one to buy

  22. CoreyBussey says:

    How long do these trade line stay on my credit.

  23. Garland Morgan says:

    Since, the Tradline stay own your credit report for two months. Is it wise if I purchase 2 or 3 tradelines and pay for them 2 months in a row. Which means they will be reported active for 4 months?

  24. Deonte says:

    What if i dont have any open or closed credit card accounts to even calculate which tradeline would be best for me??? All I have is student loans in which the account is open and in good standing. I want to add a trade line to my credit which is 623 but idk which one to choose…

  25. Patrice412 says:

    hello I am in the process of getting my credit repaired,however I wanted to purchase a trade line once I am done with that. I am trying to get a auto loan for a brand new truck. But I would like to put it in my own name without a co signer. Are there any suggestive trade lines for that ?

    • Tradeline Supply Company, LLC says:

      We do not provide any advice or guarantees regarding results or funding. You would need to speak with your lender about their requirements for an auto loan. However, we have many other resources on our site that can guide you in making a decision, such as Common Mistakes Made When Buying Tradelines.

  26. Chi Chi says:

    I’ve been waiting to add tradelines for a while, however, I have a lot of student loans. They are all in good standing and consolidated, but the amount owed is pretty high and the payment is very low. I don’t have any revolving credit at all. Could tradelines help in this situation with the student loans.

  27. Felicia Turnage says:

    Do you help with choosing the right credit line amount and dates according to what is going on with my credit?

  28. Jermaine Sims says:

    I love how you all are explained everything word for word but i have a tone of question?…there are things that still need to be answered… of my biggest question is can i get more information on some of the best tradlines that you have….Thank you for everything…..

    • Tradeline Supply Company, LLC says:

      Thank you for your comment! You can see all of the information about each of our available tradelines on our tradeline list. If you have further questions, give us a call and we will be happy to help.

  29. I need to get my credit score up to a 700 hiw would I go about doing that

  30. Rhyheem Rushing says:

    If I buy a trade line how long will it report on my credit report? And what if I need an extension after the time ends?

  31. A rich says:

    I have a credit score of 504 and I need a place to stay I am homeless before I send money I don’t have will this help me get a decent enough score to get a place to stay

  32. Kevinia Eichelberger says:

    So i need some help choosing a tradeline that will help raise my score my longest history is 4 yrs what should i choose help!!!!!

  33. Succds says:

    When I purchased the tradeline how long I’m going to be on it? Or how many times I have to pay

  34. tami says:

    I love it also; people pay a lot for stuff like this. I see how people scam people for this information and it is free. I am glad I didn’t fall in the hands of them people.

  35. Reginald Parker says:

    I already have a tradeline, however I did not get a chance to upload my documents. How do I go back in and get a chance to upload them?

  36. Dolly Casimir says:

    Need a trade line

  37. CEO says:

    Tradeline Supply has helped generate us massive amounts of money!!!

  38. BRIGHA12 says:

    how do i know what is the nest tradeline for me?

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