I applied for a ton of cards in September of 2012, which I got. I am now coming up on those cards reaching their 6 month mark. Will this have a positive effect on FICO? I know at 1 year it does, but does 6 months matter?
IME, if I ever suffered that new credit ding, points would return gradually starting the 2nd month (with the first showing the ding) and the points gradually returned in time. IME, if I ever saw an increase at 6 months, it wasn't because it turned 6 months, but it was because the damage is slowly fading. Usually I'd see points returned most months leading up to a year. If I didn't apply for new credit in that first year or didn't have any new TLs reporting, then I'd usually see a bump at the 12th month as the TL hits a year old, but if I applied for credit before then, then I usually wouldn't see any increase at all.
recently for me it's been 3 months to get the points back, depending on utilization and number of cards reporting when the newest account hits 3 months. But at no point in the last 12 months did i not have multiple other accounts under 1 year old when my newest hit 3 months, so really i'm just recovering into a less harsh ding. I think if my newest account was my only one under 1 year, it would have a larger affect and it would take longer than 3 months to get the points back.
I opened three new accounts in the last twelve months, two car loans and one credit card. Account one hit one year this month and I got a few points returned. The last opened account will be one year old in Nov. I anticipate all points returning by then. At this point I am still down about 25 points.