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Active Duty Servicemembers
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B
Bag Fees
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C
C Corporation Apportionment
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Cryptocurrency
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D
Daily Vehicle Rental Fee
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E
E-Filer Attachments
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F
Fees
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First-time Home Buyer Savings Account Interest Deduction
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Fuel Tax Licensing
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Gasoline & Special Fuels
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H
Help
Historic Property Preservation Credit
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I
Identity Theft
IFTA 2nd Quarter Fuel Tax Rates 2024
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International Payments
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J
K
L
Legislative Webinar
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M
Marijuana Excise Tax
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Marketplaces
Marketplace Facilitators
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Military Servicemembers
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Moist Snuff
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N
Need to update your address or name?
New Colorado Resident | Frequently Asked Questions
Nicotine Products
Nicotine Products Consumers
Nicotine Products Distributors
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Nicotine Products Tax Guide
No Withholding Tax Collected
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Nonresident Partners & Shareholders
O
Offer In Compromise of Tax Liability
Oil & Gas Severance Tax | Business Filers
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Olympic Gold Medal Subtraction
Online Services
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P
PACT Act Requirements
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P
Penalties and Interest
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Q
R
Rebate Dates
Refund
Renew Your Sales Tax License
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Retail Delivery Fee
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Retail Delivery Fee Webinar
Retail Marijuana Delivery Sales Tax
Retired Servicemembers
Retroactive SALT Parity Act Composite Reporting 2018-2021
Retroactive SALT Parity Election 2018-2021
Retrofitting a Residence to Increase a Residence's Visitability Credit (Home Modification Tax Credit)
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ROL Delays Acceptance of 2022 Returns
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S
Sales & Use Tax
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Sales Tax Exemption On Essential Hygiene Products
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SALT Parity Act reporting 2022-2025
SALT Parity Act Training Materials
SALT Parity Election 2022 and 2023
Scams - Warning to Taxpayers
Send a Secure Message in Revenue Online
Service Fee
Service of Legal Documents
Set Up a Business Revenue Online Account
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Severance Tax
Severance Tax | Forms & Instructions
Small Business Development Center (SBDC) Training Materials
Software Developers | Fuel Tax XML
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Special Event License
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T
TABOR
TABOR Frequently Asked Questions
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Tobacco Products
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Tobacco Products Tax Guide
Transport Methods & Modes
U
V
Video Library
Visit a Taxpayer Service Center
Voluntary Disclosure Program
W
Wage Withholding Frequently Asked Questions
Wage Withholding Webinar
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What Should Partnerships and S Corporations Do To Prepare?
Where's My Refund?
Withholding Tax
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XYZ
Year-End W-2 XLSX Info Return Template Instructions
Zero File Sales Tax Return