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I just got 2 new cards: AMEX PRG and AMEX Delta Gold. I know my scores will take a bit of a dip, but then rebound, maybe even improve.
About how long does it take for scores to recover from a new credit card TL?
Depending on balances, and other lines open, six months to a year.
Obviously you're in a high bucket, so you're going to take a significant hit with the HP, then the "new acct's reporting," then the AAOA dropping, but the recovery will be fast, and strong.