Colorado dr8453 form 2026

1. Click ‘Get Form’ to open the Colorado DR8453 in the editor.
2. Begin by entering your Declaration Control Number (DCN) at the top of the form. This is a 14-digit number assigned by the IRS after acceptance.
3. Fill in your personal information, including your last name, first name, middle initial, and Social Security Number. If filing jointly, include your spouse's details as well.
4. In Part I, report your total income from federal Form 1040 and taxable income as specified in the instructions for lines 1 and 2.
5. Continue filling out Part I by providing information on Colorado tax and withholding amounts as indicated on lines 3 through 6.
6. Sign and date the declaration in Part II. If filing jointly, ensure both spouses sign.
7. If applicable, complete Part III by having your Electronic Return Originator (ERO) or preparer sign and date the form.

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