
Your credit history length is one of the most important factors that can influence your credit score. With patience and diligence, you can increase your credit history length. Authorized users on long-standing credit card accounts are one way to improve your score. Once you become an authorized user, your credit card issuer has to report your credit information the national credit reporting agencies.
Average age of accounts
The average age of accounts in your credit history is the average number of years that each of your credit accounts has been open. Your credit score is more likely to rise the older your account history, particularly if all aspects of your credit are in great standing. Although it is not part of your FICO credit score breakdown but falls under the category length of credit history,
You can add all accounts and divide by the number of cards to calculate your average account ages. Do not open too many accounts as this will lower your average account age. While the account age matters, it is better to be older than you are, some accounts will close by design.

Credit cards average age
The average age of credit card cards can reveal a lot about your credit score. This takes into consideration the age of each card and how many you have. Average age is around 8 years. However, this age can also be influenced by the age of the specific account and how recently it was used.
The average age of credit cards varies by geography. People living in rural or commuter towns might not have much money, or they may not be able to start small businesses. But they spend a lot time driving, which can lead them to borrow. In both cases, the first credit card is typically obtained by adults between the ages of 21 and 24.
Average age of your payment history
The average age at which your payments have been made is an important factor in credit card ratings. This number is calculated using the average age of all credit accounts, divided by the number of accounts. A solid credit rating will be awarded to someone who has an average age of more than eight years. You should be careful as your average age may decrease if you have multiple credit cards.
Your credit score will be determined by your average payment history. However, it is not the only factor. Other important factors are the amount owed to lenders as well as your payment history. You can build good credit by paying your bills on-time and keeping your credit utilization rate low.

Average age of all accounts
The Average Age of Accounts combined in credit history is a factor that creditors use to evaluate your risk. It is calculated by dividing the oldest and the newest accounts by the number of accounts. An older average age is better than a younger one. However, it's best not to open more than one credit account at the same. This is because too many accounts can lower your average ages.
The oldest account weighs the most in determining credit score. However, the newer accounts are given less weight. You can also increase your account's average age by adding family members or friends to existing accounts. However, you must ask the card issuer about its reporting policies before adding a friend.