Many taxpayers
accustomed to receiving tax refunds are finding that they owe taxes this year,
due to changes made by the Tax Cuts and Jobs Act of 2017. If you owe
significant federal or state taxes, TurboTax will generate estimated tax
vouchers to help you avoid an underpayment penalty next year. Tax deposits using the vouchers are not mandatory, but are recommended based on this year's tax situation.
https://ttlc.intuit.com/replies/3301891
