The Taxwise program allows for filing state extensions when required. Below are the states:

State Federal extension (4868) accepted?

All payments must be mailed in by state deadlines

Alabama - Automatic extension
Arizona - Yes
Arkansas - Yes
California - Automatic extension
Colorado - Automatic extension
Connecticut - Yes
Delaware - Yes
District of Columbia - No
Georgia - Yes
Hawaii - No
Idaho - Automatic extension
Illinois - Automatic extension
Indiana - If there is a balance due or refund due, an extension must be filed. If a refund is due then the Federal extension is allowed.
Iowa - Automatic extension
Kansas - Yes, include 4868 with return
Kentucky - Yes, include 4868 with return
Louisiana- The state of Louisiana no longer accepts a Federal extension to file as an extension for a Louisiana Individual return. If your client needs to file an extension with the state of Louisiana, you now need to use form LA R-2868, Application for Extension of Time to File Louisiana Individual Income Tax.
Maine - Automatic extension
Maryland - Yes if a refund is due. No if balance is due. Must file 502E
Massachusetts - Automatic extension
Michigan - Yes
Minnesota - Automatic extension
Mississippi - Yes, include 4868 with return
Missouri - Yes, include 4868 with return
Montana - Automatic extension
Nebraska - Yes, include 4868 with return
New Hampshire - No. Must file extension if 100% of balance due is not paid.
New Jersey - Yes, include 4868 with return
New Mexico - Yes
New York - No
North Carolina - No
North Dakota - Yes
Ohio - Yes, include 4868 with return
Oklahoma - Yes, include 4868 with return
Oregon - Yes
Pennsylvania - Yes
Rhode Island - Yes, include 4868 with return
South Carolina - Yes
Tennessee - Yes
Utah - Automatic extension
Vermont - No
Virginia - Automatic extension
West Virginia - Yes, include 4868 with return
Wisconsin - Yes, include 4868 with return