I filed my taxes using TurboTax and I see that there are vouchers included for pre-payment for 2017. I bought a house in late 2016 and was better off using the standard deduction and as a result, I owed over $1,000 in taxes. I know that in 2017, I will be able to deduct 12 months' worth of mortgage interest instead of one month and I will be able to itemize deductions. I'm fairly positive I'll either get a refund or I will owe less than $1,000. Is is necessary to submit a pre-payment for Tax Year 2017? The pre-payment vouchers make it seem like it's mandatory.