If you filed by e-filing then you do not need to mail in the actual tax return forms. You need to pay your taxes that are due by the filing deadline of April 17, 2018. You can do that by mailing the payments in with the 1040V payment voucher or you could go to the IRS direct pay site and pay online. If you mail in a check or money order, it is a good idea to use a mailing service that will track it like UPS or certified mail so you will know the IRS received your check.
https://www.irs.gov/payments/direct-pay
In order to pay your state tax due, please look to see how your state prefers be receive payment by going to the state's tax website.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
