My tax returns include 2017 prepay vouchers. I did not elect that option.

[ccmtaxret]

I just want to make sure I am not bound to prepay 2017 taxes

[nyinyeb · Accepted solution]

The software anticipates that you may want them (find them useful) and generates them automatically. 

Any estimated tax vouchers that are generated with your return are not transmitted to the IRS or your state.

You do not have to make estimated tax payments if you do not wish to do so.  However, if you end up owing on your 2017 taxes and do not qualify for an exception (see https://www.irs.gov/publications/p505/ch04.html), you may then have underpayment penalties assessed.