I've been doing research on this "too many accounts" (reason code #28), and the word from the top is that it refers to both open and closed accounts.
Closing an account won't remove the ding. They have to wither up and fall off from old age, aka 10 years after closing. (EQ varying, of course.)
And it's a really, really weenie penalty. Yes, it exists, but it's not a big one. If you don't keep opening new accounts, your total number of accounts will lessen as old, closed ones fall off.
Frankly, I'd rather have the too many accounts ding with a healthy number of older accounts. I'm sweating the next few years when a lot of installment accounts fall off. I didn't get started with my own revolving credit until relatively recently. I'll be aging backwards, like Merlin, for much of the next decade.
* Credit is a wonderful servant, but a terrible master. * Who's the boss --you or your credit?
FICO's: EQ 781 - TU 793 - EX 779 (from PSECU) - Done credit hunting; having fun with credit gardening. - EQ 590 on 5/14/2007