Q. Do I need to estimate the taxes for the capital gains and pay those before the January 17th deadline?
A. Simple answer: Yes. If you have a 4th quarter bump in income, without withholding, you MAY need to make a 4th quarter estimated payment by Jan 17.
But, in your case, probably not. If the tax on the gain is less than $2500, you will not be subject to an underpayment penalty. $2500 - 1500 =1000.
If you expect to owe (balance due) less than $1,000 in federal taxes at tax filing time, you do not need to make estimated quarterly tax payments.
