Personal Tax Information:

If you were approved for a federal tax extension, the State of Colorado will automatically grant you a 6 month tax extension. You'll need to submit Colorado Form DR 158-I (PDF) or make a payment online through Colorado EPay if you need to make a state tax payment. You must pay at least 90% of your tax liability by April 15 and the balance when you file by October 15 to avoid late payment penalties.

A Colorado tax extension will not give you extra time to pay any tax balance due. Any balance due must be paid by April 15 or possible payment penalties may apply. See Form DR 158-I (PDF) for additonal instructions.

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 Colorado Department of Revenue website.
https://www.colorado.gov/apps/dor/tax/netfile/individualPayTypes.jsf

Business Tax Information:

An automatic six-month extension of time for filing the Colorado corporation income tax return is allowed for all taxpayers.An extension of time to file is not an extension of time to pay. If at least 90 percent of the net tax liability is not paid by the original due date of the return, penalties may result.

Payments can be made either online through Colorado EPay or by mailing Payment Voucher Form DR 158-C (PDF).

For more information, visit the State of Colorado Department of Revenue website.
https://www.colorado.gov/apps/dor/tax/netfile/corporationPayTypes.jsf