Related Information

Question: How do I get a estimated payment booklet mailed to me?
The Colorado Department of Revenue does not mail individual estimated income tax payment forms automatically. Instead, taxpayers can make estimated tax payments by credit card or echeck through Revenue Online. Click Individual, then click Make a Payment and follow the prompts. Or, taxpayers may download the 104EP forms from the Individual Income Tax forms page.

Individual estimated payment due dates are:

First Quarter: April 15
Second Quarter: June 15
Third Quarter: Sept. 15
Fourth Quarter: Jan. 15

If the due date falls on a weekend or holiday, the due date is the next business day.

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