I need to file Schedule AI of Form 2210, because I made a big Roth conversion in the 4th qtr of 2009 and did pay estimated taxes on it until Jan 2010. I am using TurboTax and it's handling it pretty well, but I'm confused about how my capital loss should be handled. In particular, I have a $38K short-term capital-loss carryover (from 2008 to 2009). In a 2009, I have $23K in short-term gain and $17K in long-term losses. Thus I have a minus-$3K entry on Line 13 of Form 1040, and $12K and $17K short- and long-term capital loss carryovers to 2010.
So my question is two-fold. First, how do I credit the $3000 loss, which is part of my AGI, to the four annualized installments on Form 2210AI. Do I credit minus-$750 per installment, subtract it all out in the first period, or what ? Second, how do I handle the massive carryovers from 2008 and into 2010 ? Is the allowed $3000 loss the only thing that matters for 2210AI purposes ?
Thanks