If you have already e-filed your return, you will need to
make your payment for taxes owed directly to the IRS or your state's
Department of Revenue, or you can pay by check or money order using your payment vouchers. You will need to pay your taxes owed no later than
April 17, 2018 to avoid penalties. You can pay your taxes owed by visiting the following IRS link: https://www.irs.gov/Payments
You
can click on the link for your state, in the following TurboTax FAQ, to be taken to their Department
of Revenue site in order to pay your state taxes owed:
https://ttlc.intuit.com/replies/3302452
Even if you elected to pay your taxes owed by check,
you can pay your taxes owed by visiting the following IRS link: https://www.irs.gov/Payments