The portal will be available beginning February 27, 2017. Please note: Between February 27, 2017 and April 2, 2017, Taxpayer Administrators and/or Taxpayer Users will be able to create a profile, verify business information and registered tax accounts, and assign Taxpayer Users (if you are a Taxpayer Administrator). Beginning April 3, 2017, you will be able to file and remit through the portal. The first tax return that must be submitted electronically will be for the March 2017 period due April 20, 2017.