Download Form 204 (PDF)

Colorado Estimated Tax Underpayment Form updated 05/2012

Printable Colorado Income Tax Form 204

If you failed to pay or underpaid your estimated income taxes the previous tax year, you need to fill out Form 204 to calculate and pay any penalties or fees owed. For more information, see the Colorado Income Tax page.

Source: http://www.colorado.gov/cs/Satellite?blobcol=urldata&blobheader=application%2Fpdf&blobkey=id&blobtab