Where to mail co state tax return

In Colorado, you can mail your state income tax return to the following address:

Colorado Department of Revenue PO Box 17037 Denver, CO 80217-0037

Make sure to use the correct mailing address for your specific situation:

• If you're filing a paper return, use the above PO box address.
• If you're filing an amended return, use the following address: Colorado Department of Revenue, PO Box 17038, Denver, CO 80217-0038.
• If you're filing a payment only (no return), use the following address: Colorado Department of Revenue, PO Box 17039, Denver, CO 80217-0039.

It's also important to note that you can e-file your Colorado state income tax return through the Colorado Department of Revenue's website or through a tax preparation software like TurboTax or H&R Block.

Remember to keep a copy of your return and any supporting documents for your records.