The Electronic Federal Tax Payment System (EFTPS) tax payment service is provided free by the U.S. Department of the Treasury. After you've enrolled and received your credentials, you can pay any tax due to the Internal Revenue Service (IRS) using this system.
The Income Tax Unit can send your U.N. estimated tax advance payments via electronic funds transfer (EFT) to both IRS and NY State if you enroll yourself with the EFTPS.