Get your taxes done using TurboTax

When a large portion of your income was at the end of the year you can get a break on the estimated tax penalty by using the annualized income method to calculate the penalty. It takes into account that the income occurred at the end of the year, so you were not required to make estimated tax payments earlier in the year. When you go through the "Underpayment penalties" topic in TurboTax it will ask you if you want to use the annualized income method.