Get your taxes done using TurboTax

Here are the safe harbor rules that will keep you from any penalties for underpayment from Turbotax  h 

1. Do you expect your federal income tax withholding (plus any estimated taxes paid on time) to amount to at least 90 percent of the total tax that you will owe for this tax year? If so, then you're in the clear, and you don't need to make estimated tax payments.
2. Do you expect that your income tax withholding will be at least 100 percent of the total tax on your previous year's return? Or, if your adjusted gross income (Form 1040, line 37) on your tax return was over $150,000 ($75,000 if you're married and file separately), do you expect that your income tax withholding will be at least 110 percent of the total tax you owed for the previous year? If so, then you're not required to make estimated tax payments 
3. Please remember though that if your total household income is over 250,000 mfj, you will owe a 3.8% net investment tax on the capital gains. 
4. The IRS would like their money in the quarter you receive it if you don't fall under safe harbor. https://www.irs.gov/faqs/estimated-tax/large-gains-lump-sum-distributions-etc/large-gains-lump-sum-d...
5.  ( I can't get rid of paragraph numbers..only 1 and 2 are part of the turbotax faq.)