Your return in Turbo Tax doesn't know when you got the income (like Q1). It spreads the income out evenly over the 4 quarters. So even though you don't have income in Quarter 2, 3 & 4 it shows a tax liability for each quarter. Then it thinks you didn't pay in enough for those quarters.
All you have to do is go though the 2210 form and annualize the income and payments. You can do that in the Online version as I posted in my first post.
