I'd like to ask a question about ST capital gains, here is a hypothetical: suppose in the second quarter I have the unexpected opportunity to sell a stock at a gain, and say I make a $25,000 profit, so there is a ST capital gain. I didn't expect to make this sale, so I didn't set up estimated quarterly payments, so would the correct tax treatment be to file form 2210 and pay the tax on the gain? If not, what would be the correct thing to do? Thanks!
