The US Internal Revenue Service has established an electronic payment system suitable for individual taxpayers.
I tried the system for myself this year and found it quite easy. (At least easier than writing out a check and snail mailing it to the IRS.)
You simply sign on to the IRS e-file system at www.EFTPS.gov and create your account. That is, select the big red “Enroll” button.
After you create your account, it takes 5 business days for the IRS to send to you via snail mail the log in info. After I received my log in info I was quickly able to sign into the system and make my estimated quarterly payment.
This would also be useful when making extension payments. But we must have our account created before the due dates – so log in today and establish your account.