Idaho State Tax Commission

Idaho State Tax Commission

Tax Commission News Release

Deadline nears for taxpayers with filing extensions

BOISE, IDAHO — Sept. 21, 2010 — If you haven't filed your 2009 Idaho state income taxes, the clock is ticking. Taxpayers who qualified for an automatic extension of time to file Idaho returns must send their return and full payment by Oct. 15, according to the Idaho State Tax Commission.

Idaho law allows these taxpayers to avoid a penalty for late filing, but they’ll be charged 5 percent interest on any tax that was due and not paid by April 15.
“We’re expecting about 20,000 returns to be filed by the Oct. 15 due date,” said Dan John, tax policy supervisor for the Tax Commission.

Taxpayers can file returns electronically through Oct. 15. Some may qualify to file online for free through the Free File program available at (click on “Free income tax filing” in the “Quick Picks” section).

Filers can also pay their taxes electronically through And they can mail returns and payments to the Idaho State Tax Commission, P.O. Box 56, Boise, ID 83756-0056.

For help computing interest, taxpayers should call 334-7660 in the Boise area, (800) 972-7660 toll free, or visit the Boise office. They can also get help from Tax Commission field offices Oct. 12-15. (See list of offices below.)

Tax Commission Offices:

800 Park Blvd., Plaza IV                Open weekdays, 8 a.m. - 5 p.m.

Coeur d'Alene:
1910 Northwest Blvd., Suite 100    Open October 12-15, 8 a.m. - 5 p.m.

Idaho Falls:
150 Shoup Ave., Suite 16              Open October 12-15, 8 a.m. - 5 p.m.

1118 F St.                                      Open October 12-15, 8 a.m. - 5 p.m.

611 Wilson Ave., Suite 5                Open October 12-15, 8 a.m. - 5 p.m.

Twin Falls:
440 Falls Ave.                                Open October 12-15, 8 a.m. - 5 p.m.

Posted 09-21-2010

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