If you are receiving a refund from your 2017 return, don't give it another thought. If you NEED to make estimated tax payments in 2018, you can either use those pre-printed vouchers or pay your estimated taxes through the IRS website.
See this:
<a rel="nofollow" target="_blank" href="
https://ttlc.intuit.com/questions/1901110-do-i-need-to-make-estimated-tax-payments-to-the-irs">https...>
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
