Alpha Index
A
B
- Biodiesel & Blended Fuel Tax
- Business Income Tax
- Business Income Tax | Accepted Software
- Business Income Tax | Affiliated Corporations
- Business Income Tax | Estimated Payments
- Business Income Tax | File Online
- Business Income Tax | Forms & Instructions
- Business Income Tax | Frequently Asked Questions
- Business Income Tax | Installment Agreements
- Business Income Tax | Organizational Structure
- Business Income Tax | Payment Information
- Business Tax Class
- Business Tax Training
- Businesses
- Buying or Selling a Business
C
- C Corporation Apportionment
- C Corporation Filing Information
- Cash Payments
- Change Refund Address
- Change Sales Tax Account Address
- Charitable & Non-Profit Organizations
- Check or Money Order Payments
- Cigarette & Tobacco Products | Certified Brands & Manufacturers Directories
- Cigarette & Tobacco Products | Forms & Instructions
- Cigarette & Tobacco Products | Licensed Distributors
- Cigarette & Tobacco Products | Master Settlement Agreement (MSA) Reporting Requirements
- Cigarette Consumers
- Cigarette Distributors
- Cigarette Retailers
- Cigarette Tax
- Cigarette Wholesale Subcontractor
- Citizens' Advocate
- Close Sales Tax Account
- Coal Severance Tax
- Collection Agencies
- Collections
- Colorado Revised Statutes
- Colorado State Holidays
- Common Severance Tax Filing Errors
- Common-Law Marriage
- Consumer Use Tax
- Consumer Use Tax | Filing Information
- Consumer Use Tax | Frequently Asked Questions
- Consumer Use Tax | How to File Online
- Consumer Use Tax | Retailer Reporting Requirements
- Contact the Collections Section
- Contact Us
- Contact Us
- Contact Us By Email
- Contact Us By Mail
- Contact Us By Phone
- Corporate Income | Letter Rulings
- Criminal Tax Investigations
D
E
F
- Fiduciary Income Tax
- Fiduciary Income Tax | Accepted Software
- Fiduciary Income Tax | File Online
- Fiduciary Income Tax | Filing Information
- Fiduciary Income Tax | Forms & Instructions
- Fiduciary Income Tax | Frequently Asked Questions
- File & Pay Cigarette & Tobacco Products
- File a Protest
- File Individual Income Tax Online
- File Sales Tax Online
- File Special Event Sales Tax Online
- File Using Revenue Online
- File Withholding Online
- First-time Home Buyer Savings Account Interest Deduction
- Forms By Tax Type
- Forms in Number Order
- Frequently Asked Questions About Reporting Tax Fraud
- Fuel Distributor Payment Information
- Fuel Distributors
- Fuel Licensing
- Fuel Refund Account
- Fuel Tax & International Fuel Tax Agreement Refunds
- Fuel Tax Exempt Sales
- Fuel Tax Information
- Fuel Tax | COFTS Information
- Fuel Tax | Compressed & Liquefied Gases
- Fuel Tax | Diversion Reporting
- Fuel Tax | Dyed Diesel
- Fuel Tax | Exempt Use of Fuel
- Fuel Tax | Fees & Surcharges
- Fuel Tax | Forms & Instructions
- Fuel Tax | Gasoline & Special Fuels
- Fuel Tax | Letter Rulings
- Fundraising & Sales Tax
- FYI - Publication Categories
H
- Help
- Historic Property Preservation Credit
- How to Apply for a Colorado Sales Tax License
- How to Apply for a Special Event License
- How to Apply for a Withholding Account
- How to File Special Event Sales Tax
- How to Pay/Remit Withholding Tax
- How to Report Year-End Withholding Statements
- How to Request a Payment Plan
- How was your service?
I
- Identity Theft
- Identity Theft Prevention
- Identity Theft Resources
- IFTA Frequently Asked Questions
- In-State Businesses
- Income Tax Account
- Income Tax Credits
- Income Tax Due Dates & Filing Extension
- Income Tax Guidance Publications
- Income Tax Subtractions
- Income Tax | Credit, Subtraction & Deduction Forms
- Income Tax | Third Party Access
- Income Withholding Tables & Worksheet
- Individual Income Tax
- Individual Income Tax Bill
- Individual Income Tax Filing Requirements
- Individual Income Tax How To Videos
- Individual Income Tax Training
- Individual Income Tax | Accepted Software
- Individual Income Tax | Estimated Payments
- Individual Income Tax | Forms & Instructions
- Individual Income Tax | Frequently Asked Questions
- Individual Income Tax | Letter Rulings
- Individual Income Tax | Payment with Return Filing
- Individual Wage Withholding
- Individuals
- Intercepted Refunds
- International Fuel Tax Agreement (IFTA)
- International Fuel Tax Agreement | Close Account
- International Fuel Tax Agreement | Decals
- International Fuel Tax Agreement | Filing Information
- International Fuel Tax Agreement | Forms & Instructions
- International Fuel Tax Agreement | License Information
- International Fuel Tax Agreement | License Renewal
- International Fuel Tax Agreement | License Requirements
- International Fuel Tax Agreement | License Submission
- International Fuel Tax Agreement | Recordkeeping
- International Fuel Tax Agreement | Reporting
- International Fuel Tax Agreement | Tax Account
L
- Late Payment of Tax Bill
- Letter Rulings
- Liquor Tax
- Liquor Tax | Alternating Proprietor
- Liquor Tax | Consumer's Personal Inventory Reporting
- Liquor Tax | Excise Tax Account
- Liquor Tax | Filing Information
- Liquor Tax | Forms & Instructions
- Liquor Tax | Manufacturer
- Liquor Tax | Out-of-State Wineries & Distributors
- Liquor Tax | Payment Information
- Liquor Tax | Refund
- Liquor Tax | Wholesaler
- Liquor Tax | Wine Excise Tax, Fee & Surcharge
- Living Out of the Country
- Local Government
- Local Government Sales Tax
- Local Government | Information for Local Governments/ Entities Implementing a New Tax or Changed Tax Rate
- Local Sales/Use Tax by Address
- Locations - Service Centers
- Look Up Colorado Non-Profit Identification Number
M
- Make a Change to Your Withholding Tax Account
- Manage My Tax Account
- Marijuana Excise Tax
- Marijuana Sales Tax
- Marijuana Sales Tax License Requirements
- Marijuana Sales Tax Special Districts
- Marijuana Tax
- Marijuana Tax | Frequently Asked Questions
- Marijuana Tax | Information for Local Governments
- Marketplace Facilitators
- Marketplace Sales & Use Tax Information
- Media Center - Taxation
- Metallic Minerals Severance Tax
- Military Servicemembers
- Molybdenum Ore Severance Tax
- Motor Vehicle
- Multichannel Sellers
N
O
- Offer In Compromise of Tax Liability
- Oil & Gas Severance Tax | Business Filers
- Oil & Gas Severance Tax | Electronic Funds Transfer (EFT)
- Oil & Gas Severance Tax | Estimated Payments
- Oil & Gas Severance Tax | Filing Information
- Oil & Gas Severance Tax | Individual Filers
- Oil & Gas Severance Tax | Owners & Operators
- Oil & Gas Severance Tax | Stripper Well Exemption
- Oil & Gas Severance Tax | Withholding Information
- Olympic Gold Medal Subtraction
- Online Services
- Out-of-State Businesses
P
- Part-Year and Nonresident
- Partnership & S Corporation Apportionment
- Partnership & S Corporation Filing Information
- Partnership Income Tax | Letter Rulings
- Passenger Mile Tax
- Pay
- Pay Individual Income Tax
- Pay Online by Credit/Debit Card or E-Check
- Payment Frequently Asked Questions
- Payment Options by Tax Type
- Payment Plan Frequently Asked Questions
- Payment Plans (Installment Agreements)
- Petition for Rule Change
- Protest Rights
- PTC Rebate Eligibility Requirements
- PTC Rebate Forms
R
- Rebate Dates
- Refund
- Refund Check-Missing, Lost or Destroyed
- Refund Processing
- Register to be a Withholding Submitter
- Renew Your Sales Tax License
- Report Tax Evasion & Fraud
- Request a Copy of Your Return
- Requesting Tax Return Copies
- Resources for Tax Professionals
- Retail Sales Tax Return (DR 0100) Changes
- Retired Servicemembers
- Retirement Pension or Annuity Subtraction
- Revenue Regulation 39-22-303(12)(c) -- Notice
- Rural and Frontier Health Care Preceptor Tax Credit
S
- Sales & Use Tax
- Sales & Use Tax Filing Tips
- Sales & Use Tax Software (SUTS) System
- Sales & Use Tax | Forms & Instructions
- Sales & Use Tax | Frequently Asked Questions
- Sales & Use Tax | Letter Rulings
- Sales & Use Tax | Pay
- Sales and Use Tax Rates Lookup
- Sales Tax - Spreadsheet Filing
- Sales Tax Accounts & Licenses
- Sales Tax Basics
- Sales Tax Business Account Tasks in Revenue Online
- Sales Tax Changes
- Sales Tax Changes | Frequently Asked Questions
- Sales Tax Deductions
- Sales Tax Exemptions
- Sales Tax Filing Frequency & Due Dates
- Sales Tax Filing Information
- Sales Tax Guidance Publications
- Sales Tax Information for Online Sellers
- Sales Tax Non-Filer Notices
- Sales Tax Rate Changes
- Sales Tax Refund
- SB19-006 Executive Council
- Scams - Warning to Taxpayers
- Sending a Secure Message in Revenue Online
- Service Fee
- Set Up an Account
- Severance Tax | Forms & Instructions
- Severance Tax | Pay
- Sign Up for a Business Revenue Online Account
- Sign Up for an Individual Revenue Online Account
- Small Business Exception
- Software Developers | Income Tax
- Software Developers | Sales Tax XML
- Special Event Organizers
T
- TABOR 2019
- TABOR Information for Local Governments
- Tax Conferee
- Tax Developers
- Tax Educational Resources
- Tax Exemption Application
- Tax Exemption Qualifications
- Tax Fraud Prevention
- Tax Policy & Research
- Tax Rules
- Tax Training
- Tax-Exempt Purchases
- Taxation Disputes
- Taxpayer Identity Verification
- Taxpayer Security Safeguards
- Tobacco Products
- Tobacco Products Distributing Subcontractor
- Tobacco Products Retailers
- Top Income Tax Filing Mistakes & How to Correct Them
W
- W-2 & 1099 Statements
- W-2 and 1099 Statements
- Wage Garnishments
- Wage Withholding Training
- Website Feedback
- What is Severance Tax?
- Where's My Refund?
- Who Must File Sales Tax?
- Withholding Annual Reconciliation Revenue Online
- Withholding Filing Frequency & Due Dates
- Withholding Frequently Asked Questions
- Withholding Refund
- Withholding Tax
- Withholding Tax Electronic Funds Transfer
- Withholding Tax Filing Requirements
- Withholding Tax Guidance Publications
- Withholding | Forms & Instructions
- Withholding/Payroll Tax | Letter Rulings