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Colorado Income Taxes and CO State Tax Forms

efile Colorado tax return
Colorado
"The Centennial State"

Start Federal and Colorado Tax Returns

Your Colorado Income Tax Return

Efile.com makes it easy for you to e-file your state tax return (e.g resident, nonresident, or part-year resident returns). However, the IRS and the respective state tax agencies require you to e-file a federal income tax return at the same time you efile a state tax return. This is not an efile.com policy but an IRS and state agency policy. Many taxpayers have asked how they can only prepare and file a state income tax return. The efile.com tax application lets you prepare a state tax return only, however you cannot efile the state return upon completion. Instead, you will have to download the completed state tax return as a PDF file, print it, sign it, and mail it to the respective state - the address is on the PDF file. Find more detailed instructions on how to prepare and file a state only return on efile.com.

2018 Colorado Income Tax Filing Deadlines

Deadline
Type of Filing
Description
April 15, 2019
Tax Return - efileIT*
Colorado State Income Tax Return Due Date.
April 15, 2019
Tax Extension
Colorado Automatic Extension. Details below.
October 15, 2019
Tax Return - efileIT*
Last day to efile a 2018 Colorado State Income Tax Return for tax extension filers and late efilers.
Now
Requires an accepted 2018 or previous year Colorado State Tax Return.
State Tax Returns
Select respective State Tax Return Deadlines.
Federal Tax Returns
IRS Tax Return Deadlines.

E-File These 2018 Colorado State Tax Forms

Prepare and efile these state forms for 2018 in conjunction with your federal and state income tax return. As you proceed through the tax interview on efile.com, the application will select the correct state forms for you. You can also select tax forms individually. All these forms will then be e-filed by you to the state tax agency. Instructions on how to only prepare a state income tax return.

Form/Schedule
Description
efileIT Now*
Form 102
Claim for Refund on Behalf of Deceased Taxpayer
Form 104
Individual Income Tax Return
Form 104CR
Individual Credit Schedule/Credit for Income Tax Paid to Another State
Form 104EP
Estimated Income Tax Payment Voucher
Form 104PN
Part-Year Resident/Nonresident Tax Calculation Schedule
Form 204
Computation of Penalty Due Based on Underpayment of Colorado Individual Estimated Tax
Form DR0900
Individual Income Tax Payment Voucher
Form DR1366
Enterprise Zone (EZ) Carryforward Schedule 2

* Due to IRS and state tax agency tax data sharing and validation requirements, you can only e-file a state income tax return while also e-filing a federal income tax return. This is not an efile.com created policy, but all online tax web sites have to adhere to this IRS/state issued tax data sharing policy. Find out how to only prepare and file a state tax return. Only on efile.com can you prepare and efile unlimited state tax returns for one low price. Most other sites charge a per state price.

Colorado efile Error Codes

If your Colorado state return was rejected by the state and not efile.com, you will receive an error reject code. If you prepared and efiled your return on efile.com, we will provide you with an explanation of how to correct the error on your return. You may then resubmit your state return at no additional charge until it is accepted by the state. View a list of all Colorado State efile Income Tax Return Error Reject Codes.

How to File a Colorado Tax Extension

If you are certain that you cannot file your Colorado return by the deadline, you do not need to file for an extension. You will automatically receive a 6-month extension of time to file your return (not to pay). The extended tax return due date is October 15, 2019. If you expect to owe income taxes, you should submit at least 90% of your payment with payment voucher Form DR 0900 (Individual Income Tax Payment Voucher) on or before April 15. Any remaining balance due will only be subject to interest fees, as long as the rest of the tax owed and the return is by the extension deadline, October 15, 2019. If you efiled your return and are making a payment by check or money order, you must complete a Form DR 0900 on efile.com. If you are making a payment by credit card, a Form DR 0900 is not needed. If you are making an automatic extension payment, you also must use Form DR 0900 unless it is made electronically. Use efile.com and prepare a Colorado tax return to find out what your Colorado state income tax payment will be.

Important: Do you need to prepare and e-file an IRS or federal tax extension as well?

How to File a Colorado Tax Amendment

Amended Colorado state tax returns cannot be efiled; they must be filed by mail. Learn how to file a Colorado state tax amendment.

Important Reminder! If you are filing a Colorado tax amendment, you may need to file a federal tax amendment as well.

2017 Tax Year Colorado Tax Forms

Colorado state tax forms for previous Tax Years cannot be prepared and e-filed during the current tax season. You will need to print, fill out, and mail the forms to the Colorado Division of Taxation.

Form/Schedule
Description
Claim for Refund on Behalf of Deceased Taxpayer
Individual Income Tax Return
Individual Credit Schedule/Credit for Income Tax Paid to Another State
Estimated Income Tax Payment Voucher
Underpayment Penalty of Estimated Tax
Part-Year Resident/Nonresident Tax Calculation Schedule
Computation of Penalty Due Based on Underpayment of Colorado Individual Estimated Tax
Individual Income Tax Payment Voucher
Enterprise Zone (EZ) Carryforward Schedule 2

2016 Tax Year Colorado Tax Forms

Colorado state tax forms for previous Tax Years cannot be prepared and e-filed during the current tax season. You will need to print, fill out, and mail the forms to the Colorado Division of Taxation.

Form/Schedule
Description
Claim for Refund on Behalf of Deceased Taxpayer
Individual Income Tax Return
Individual Credit Schedule/Credit for Income Tax Paid to Another State
Estimated Income Tax Payment Voucher
Part-Year Resident/Nonresident Tax Calculation Schedule
Computation of Penalty Due Based on Underpayment of Colorado Individual Estimated Tax
Individual Income Tax Payment Voucher
Enterprise Zone (EZ) Carryforward Schedule 2

Colorado Tax Facts

CO Income Tax

Colorado has a flat 4.63% tax rate.

CO Sales Tax

Colorado has a state retail sales tax rate of 2.9%.

In 2010, CO lawmakers removed sales and use tax exemptions for certain items in order to balance the state's budget. Items no longer exempt from the sales/use tax include:

  • Candy and soft drinks (including those sold in vending machines)
  • Standardized computer software
  • Materials used in mail advertising
  • Sales by out-of-state retailers

Many cities and counties have their own sales tax rates in addition to the CO state sales tax rate. Certain county and special district taxes may also apply.

More information on CO Sales Tax

CO Personal Property Tax

All real estate and personal business property in Colorado is taxable. This includes shelving, computers, equipment, furniture, and items that produce income within your business.

Odd Colorado Tax Fact

Colorado has a sales tax on "nonessential [food] articles and containers" that are convenient to the consumer, but not essential to the sale of a food product. Therefore, items such as utensils, napkins, straws, and bibs are taxed. Carryout containers used by a consumer to carry leftover meals from a restaurant are also taxed. However, paper cups and disposable containers provided by the retailer (such as fast-food French Fry containers and pizza delivery boxes) are essential and not taxed.

Colorado State Tax Agency Contacts

You can contact the Colorado Division of Taxation at 303-238-SERV (7378).

For more information on Colorado state taxes, you can visit the website of The Colorado Division of Taxation.

See other U.S. States, Territories, and Protectorates