Personal Tax Information:

If you were approved for a federal tax extension and you've paid 90 percent of your 2009 state income tax liability, or 100 percent of your 2008 state tax liability through your estimated tax payments, your withholding tax, or a combination of both, then the State of Montana will automatically grant you a six month tax extension. If you need to make a state tax payment, you'll need to submit Montana Form EXT-09 (PDF). Include a copy of your federal extension (IRS 4868) when you file your state tax return.

Filing for a Montana tax extension will not grant you extra time to pay any tax balance due. Your balance must be paid by April 15 to avoid possible penalties.

If you already received an approval notification from ExpressExtension, and you don't need to make a tax payment, then you're all done.

For more information, visit the State of Montana Department of Revenue website.
http://revenue.mt.gov/revenue/

Business Tax Information:

The State of Montana will automatically grant you a 5 month tax extension if you were approved for a federal tax extension and have paid 90% of your 2009 Montana income tax liability or 100% of your 2008 Montana income tax liability hrough your estimated tax payments, your withholding tax, or a combination of both your estimated and withholding tax payments.

However, if you need to make a state tax payment, you will need to submit Montana Form EXT-09 (PDF).

If you do not need to make a tax payment and have received an approval notification from ExpressExtension, there’s nothing more to do. Be sure to include a copy of your federal extension (IRS 7004) when you file your state tax return.

For additional information, please visit the State of Montana Department of Revenue website.
http://revenue.mt.gov/revenue/