Originally Posted by
40orFight
... having a bunch of 3-month accounts doesn't help my average age of accounts one bit. Admittedly, a bunch of 12-month accounts isn't great either, but it is at least marginally better.
...
For FICO scoring purposes, Average age of accounts is measured from the account opening dates for all your open and closed accounts.
"Having a bunch of 3-month accounts" vs "12-month" has no impact on your average age of accounts.
Do not over think this.