Length of credit history is one part of credit scoring. You cannot make a new account old overnight. A useful improvement habit is to understand your current account timeline before opening replacements or closing accounts without a cost review.
Key takeaways
- Length of credit history is one scoring factor, and you cannot make a new account old overnight.
- Build an account timeline (opening dates, fees, status) before closing or replacing accounts.
- Keep an old account only if its terms are affordable — age does not justify an avoidable fee.
Make an account timeline
List opening dates, account types, fees and payment status from your reports and statements. Separate the age of a particular account from the age and other characteristics of your overall file. Different scoring models can evaluate the available information differently.
The timeline is a decision aid, not a do-it-yourself reconstruction of a scoring formula. There is no reliable rule that one extra month of history adds a certain number of points.
Compare the reasons for a change
An old account with expensive terms and an old account with manageable terms present different choices. Ask whether a fee-free product change is available, whether it changes the account, and what conditions apply. Obtain the issuer’s explanation instead of assuming any change preserves the same reporting history.
Also consider whether keeping an account encourages debt you cannot repay. The cost of borrowing and control of spending matter alongside a score. Do not pay an avoidable fee simply because someone says older accounts must always remain open.
Example: an application you do not need
Suppose a person with one manageable card sees an offer for a second card but has no additional borrowing need. Before applying, the person can compare costs, assess the additional payment date and review the application inquiry. Opening the account is a product decision, not a guaranteed shortcut to a stronger history.
Conversely, a person facing unsuitable terms can investigate alternatives without pretending that an account’s age eliminates its costs.
Focus on the history you create next
- Review statements regularly, including unused accounts.
- Keep due dates and confirmations organized.
- Ask the issuer about unfamiliar fees or changes.
- Apply only when a product serves a considered need.
Closing an account and its reporting effects require a separate review. Do not assume the account disappears from the report immediately or that every model will react identically. Preserve accurate records and evaluate the actual terms before acting.
Frequently asked questions
How is length of credit history calculated?
Scoring models look at factors such as the age of your oldest account, newest account and the average age of accounts. Exact formulas are proprietary.
Does opening a new card lower my average account age?
Yes, a new account typically lowers the average age, and the application may add a hard inquiry. Weigh that against your actual need for the card.
Can I keep an old card open without using it?
Often yes, but issuers may close inactive accounts. Review statements regularly and ask the issuer about its inactivity policy.
Related reading
- Before Closing a Credit Card: Compare Fees, Spending Risk and Utilization
- Hard vs. Soft Credit Inquiries: Plan Applications Without Avoiding Your Own Reports
Sources and further reading
Recommended reading from Mani Hatami
- Credit for a New Life: A Beginner’s Guide for Immigrants in America — a plain-language introduction to the U.S. credit system: starting a credit history, reading scores and making informed borrowing decisions.
- Credit First, Success Next: Build the Foundation of Your American Dream — how to build the credit foundation behind bigger goals such as renting, buying a car or owning a home.
- Reading in Persian? See Mani’s Persian credit books, including Credit 101 (101 practical lessons for improving your credit score), or download the free Farsi credit e-book.
Have a question about your own credit? Contact Mani. سوالی دارید؟ به فارسی با ما صحبت کنید.
By Mani Hatami. Reviewed November 6, 2026. Educational information, not individualized financial, legal or tax advice. Examples are hypothetical; results and product terms vary.
This article was originally published on November 6, 2026. Information may have changed. Discuss your current circumstances before making financial decisions.