, Answering FAQ'sTurboTax Employee
TurboTax automatically prepares and prints estimated tax payment vouchers if you're not withholding enough taxes from your income. We want our TurboTax customers to reduce or eliminate underpayment penalties, and paying quarterly estimated taxes is one way to do that.
However – it is still up to you to decide whether to pay estimated taxes or not. To help you make that decision, see Calculate Federal Estimated Taxes.