Colorado Department of Revenue MyTax Login 2026: Sign In Now
A practical Colorado Department of Revenue login guide for taxpayers searching “Colorado Department of Revenue login,” “MyTax Colorado login,” “Colorado Revenue Online,” “Colorado.gov/RevenueOnline,” refund status, business tax login, sales tax filing, withholding tax filing, payment plan, Letter ID, Colorado Account Number, SUTS and taxpayer service help.
Quick Answer: Colorado Department of Revenue Login Means Revenue Online
The official Colorado Department of Revenue tax login is Revenue Online, often shortened to ROL. If you searched for “Colorado Department of Revenue MyTax login,” the correct tax portal is usually Colorado.gov/RevenueOnline. Use Revenue Online to manage Colorado state tax accounts, file some returns, make payments, check refund status, request a Letter ID, send secure messages and access tax account information.
Revenue Online login
Use Revenue Online for Colorado individual income tax, business income tax, sales and use tax, withholding tax, fiduciary income tax, excise and fuel tax, PTC rebate and other state-collected tax functions.
SUTS is different
Colorado’s Sales & Use Tax System, or SUTS, is a separate sales tax system used for state-collected and participating home-rule sales/use tax filing. Some businesses may need both Revenue Online and SUTS.
Letter ID may be required
To set up account access, Colorado may require a Letter ID, recent return information, federal taxable income, refund amount, Colorado Account Number or FEIN depending on the account type.
Colorado Revenue Login Helper: Find the Right Sign-In Page
Choose what you are trying to do. This helper points you to the correct Colorado login path, what to prepare and the official page to verify first.
Select a task. The helper will show the best Colorado Revenue login path, what to prepare and the official link to use.
Colorado Department of Revenue Login 2026: Revenue Online vs SUTS vs DMV vs Secretary of State
Colorado has several official systems. Choosing the wrong one wastes time and can send you to a portal that cannot access your account.
| Search intent | Correct official system | Use it for | Do not use it for |
|---|---|---|---|
| Colorado Department of Revenue login | Revenue Online | State tax accounts, refunds, payments, income tax, withholding, business income tax, sales/use tax account functions and secure messages. | Driver license renewal, LLC formation or federal IRS account access. |
| MyTax Colorado login | Usually Revenue Online | People often say “MyTax,” but Colorado’s official tax portal is Revenue Online. | Do not assume there is a separate “MyTax Colorado” portal for DOR taxes. |
| Colorado sales tax login | Revenue Online or SUTS | Revenue Online manages state-collected tax accounts; SUTS is for state-collected and participating home-rule sales/use tax filing. | Individual income tax refund status only. |
| Colorado refund login | Revenue Online refund tool | Check refund status and identity validation items when requested. | Federal IRS refund tracking. |
| Colorado business login | Revenue Online, SUTS or Secretary of State depending on task | Tax filing through Revenue Online/SUTS; entity filings through Secretary of State. | Using DOR login to create an LLC or file an annual report. |
| Colorado DMV login | Colorado DMV or myColorado | Driver license, ID, vehicle registration and DMV appointments. | Income tax returns, tax payments or refund status. |
| Colorado unemployment login | Colorado Department of Labor and Employment | Unemployment insurance claims and employer UI accounts. | Colorado Revenue tax accounts. |
| Federal tax login | IRS Online Account | Federal tax transcript, IRS payment, federal refund and EIN-related federal tasks. | Colorado state tax notices or Colorado refund status. |
How to Sign In to Colorado Revenue Online: Step-by-Step Login Path
Use the official Revenue Online portal for Colorado tax account access. For safety, type the address yourself or use the official Tax.Colorado.gov page, then open Revenue Online from there.
Sign in checklist
- Open the official Colorado Revenue Online portal.
- Use an updated browser with JavaScript enabled.
- Choose sign-in if you already created a username and password.
- Use account setup if you are a first-time user.
- Use “Additional Services” for tasks that do not require full login, such as some payment and refund tools.
- Save confirmation numbers after payment, filing, request or submission.
What Revenue Online can handle
- Individual income tax account access.
- Business income tax account access.
- Sales and use tax account management.
- Withholding tax filing and payment.
- Fiduciary income tax account access.
- Excise, fuel, fees and retail delivery fee-related functions.
Set Up a Colorado Revenue Online Account: Individual Login, Letter ID and Identity Verification
A Colorado income tax account is created after the Colorado Department of Revenue receives and processes the first return. To set up access, individual users may need information from a recent return, federal taxable income, refund amount or a Letter ID.
| Setup item | What it means | Practical tip |
|---|---|---|
| Recent filed return | Colorado may use information from your most recent filed return to verify your identity. | Keep a copy of your last Colorado return available before setup. |
| Federal taxable income amount | A return-based verification amount used during account access setup. | Enter the amount exactly as reported, not an estimate. |
| Refund amount | Refund amount from a Colorado return may be used for verification. | Use the exact refund amount from your filed return. |
| Letter ID | A security key printed on Colorado Department of Revenue letters. It begins with “L” and is followed by 10 digits. | Use the Letter ID for the same tax type. A sales tax Letter ID may not set up a wage withholding account. |
| Request a Letter ID | If you do not have a recent letter, you can request a Letter ID from Revenue Online. | The letter is mailed to the address on record and may take up to 10 business days. |
| Colorado Account Number | Colorado establishes an eight-digit Colorado Account Number for income tax and other accounts. | Businesses may use CAN or FEIN depending on the account setup path. |
Colorado Business Revenue Online Login: CAN, FEIN, Tax License, Secondary Users and Account Access
Businesses use Colorado Revenue Online to manage state-collected tax accounts, file and pay certain returns, manage tax account access, request a Letter ID and authorize secondary users. Businesses may also need SUTS for sales/use tax filing involving participating home-rule jurisdictions.
Business login items to prepare
- Legal business name.
- Federal Employer Identification Number.
- Colorado Account Number if available.
- Colorado sales tax license or withholding account details.
- Letter ID from a Colorado Department of Revenue notice.
- Username, password and profile email access.
- Tax type, filing period and notice or bill number.
- Secondary user permission details if adding or removing access.
Business tasks often done online
- File withholding tax.
- File sales tax through Revenue Online when applicable.
- Pay business income tax.
- Pay sales, withholding, fuel or fee accounts.
- Send a secure message.
- Attach documents requested by DOR.
- Manage secondary log-ons.
- Update profile email preferences.
Colorado Sales Tax Login 2026: Revenue Online, SUTS, GIS and Mandatory Electronic Filing
Colorado sales tax users may need more than one official tool. Revenue Online manages many state-collected tax accounts. SUTS is used to file and pay state-collected sales tax and participating self-collected home-rule sales and use taxes. GIS is used to look up rates by address or map location.
| Sales tax task | Official tool | Use this for | Before you start |
|---|---|---|---|
| Manage state-collected sales tax account | Revenue Online | Account access, filing, payment and state-collected tax functions. | Prepare Colorado Account Number, FEIN, license details and Letter ID if needed. |
| File state-collected and participating home-rule sales tax | SUTS | Sales/use tax filing for state and participating home-rule jurisdictions. | Confirm business location, filing period, jurisdictions and login credentials. |
| Look up sales tax rates | Colorado GIS | Find sales/use tax rates by address or map location. | Use the exact delivery or business address. |
| Mandatory electronic filing | Revenue Online / electronic system | Retail sales tax, county lodging tax, visitor benefit tax and local marketing tax filings as required by rule. | Check whether your filing period and gross sales threshold require e-filing. |
| 2026 retail sales tax e-filing threshold | Revenue Online or other electronic method | Retailers with annual gross sales or qualified purchases of $500,000 or more in the prior calendar year begin required electronic filing January 2026. | Plan early; the penalty for not e-filing when required can be the greater of $50 or 5% of tax due. |
| Local service fee rates | DR 1002 publication | Local jurisdiction service fee rate lookup. | State sales tax service fee retention changes begin January 1, 2026. |
Colorado Refund Status and Payment Login: Where’s My Refund, Direct Debit, E-Check, EFT and Payment Plans
Revenue Online is also the safest starting point for Colorado refund status and online payments. Colorado says the refund tool shows the same information staff sees, so many refund questions do not require a phone call.
Refund status workflow
- Open the official Colorado refund page.
- Select the Revenue Online refund status tool.
- Enter the requested taxpayer details exactly.
- Check daily for updates when the return is still processing.
- Use identity validation steps if you received a validation-key letter.
- Call 303-238-7378 only if the official refund page or letter says help is needed.
Payment options
- Revenue Online Direct Debit.
- Credit card or debit card.
- E-check.
- Electronic Funds Transfer.
- Check or money order.
- Cash payment where official instructions allow.
| Payment task | Best official path | Important detail |
|---|---|---|
| Pay individual income tax with return | Revenue Online or payment page | Credit/debit card or e-check can be used through Revenue Online for return payment. |
| Pay estimated tax | Revenue Online | Some estimated payments can be made without signing in to a full account. |
| Schedule future direct debit payment | Revenue Online Direct Debit | Colorado says taxpayers need a Revenue Online account at least 48 hours before the first scheduled payment if they do not already have one. |
| Request payment plan | Revenue Online Payment Help or payment plan page | Use the payment plan workflow if you cannot pay the full balance. |
| Business payment | Revenue Online / EFT / tax-type payment options | Payment method depends on the tax type and account rules. |
Colorado Revenue Online Login Problems: Password, Username, Letter ID, Account Not Found and Browser Errors
Most Colorado Revenue Online login issues come from using the wrong portal, missing Letter ID, using a Letter ID for the wrong tax type, trying to access an account before it exists or using a browser that blocks required scripts.
| Problem | Likely cause | Best fix |
|---|---|---|
| “MyTax Colorado” search does not find the right page | Colorado’s official tax portal is named Revenue Online, not usually MyTax. | Use Colorado.gov/RevenueOnline or the Revenue Online link from Tax.Colorado.gov. |
| Cannot set up individual access | You may need recent return information, refund amount, federal taxable income or Letter ID. | Use the individual ROL setup guide and request a Letter ID if needed. |
| Letter ID does not work | The Letter ID may be for a different tax type. | Use a Letter ID tied to the same tax account you are trying to access. |
| Letter ID request not received | The letter is mailed to the address on record and can take up to 10 business days. | Wait for mail delivery or call the taxpayer helpline if the address may be wrong. |
| Business account cannot be found | The business account may not exist yet or may need tax license registration first. | Confirm Colorado Account Number, FEIN and tax license/account status. |
| Sales tax filing confusion | You may be mixing Revenue Online and SUTS. | Use the sales tax page to decide between Revenue Online, SUTS and GIS. |
| Payment option missing | Some tax types require sign-in or different payment method. | Use payment options by tax type or sign in before paying. |
| Page will not load | JavaScript disabled, old browser or temporary portal issue. | Enable JavaScript, update browser, try desktop, then use Revenue Online Help. |
Colorado Department of Revenue Login Help Phone Number, Mailing Address and Service Centers
For Colorado Revenue Online help, tax questions or account issues, the main Taxpayer Services Helpline is 303-238-7378. Representatives are generally available Monday through Friday, 8:00 a.m. to 4:30 p.m. Mountain Time, except state holidays.
| Need | Official phone / address | Use this for | Prepare before contact |
|---|---|---|---|
| Taxpayer Services Helpline | 303-238-7378 | Revenue Online, refund, income tax, account setup, Letter ID and general tax questions. | Name, phone number, Colorado Account Number or Letter ID, tax type and issue summary. |
| EFT / electronic payment support | 303-205-8333 | Electronic payment and EFT questions. | Taxpayer ID, payment date, confirmation, amount and tax type. |
| SUTS support | 720-795-7759 | Sales & Use Tax System help. | SUTS account, business name, jurisdiction, filing period and error message. |
| Collections | 303-205-8291 | Collection notices, payment arrangements and delinquent account questions. | Notice, balance, tax period, payment history and deadline. |
| Fraud and tax evasion | 303-205-8262 | Report suspected tax fraud or evasion. | Names, business details, dates, evidence and summary. |
| Fuel Tax Unit | 303-205-8205 | Fuel tax and IFTA questions. | License/account details, filing period and records. |
| U.S. Postal Service mail | Colorado Department of Revenue, Section or Employee Name and Room Number, P.O. Box 17087, Denver, CO 80217-0087 | Letters, protests and correspondence when official instructions allow mail. | Section name, employee name or room number if provided. |
| Express delivery | Colorado Department of Revenue, Section or Employee Name and Room Number, 1351 5th St. Suite 101, Denver, CO 80204 | DHL, FedEx, UPS or other express mail where official instructions allow delivery. | Tracking number, notice copy and tax type. |
Colorado Revenue Service Centers: Denver, Colorado Springs, Fort Collins, Grand Junction and Pueblo
If you cannot solve a login or tax issue online, Colorado Revenue lists taxpayer service centers. Denver Regional Service Center appointments are required. Walk-ins are welcome at other listed locations, but appointments are highly encouraged.
| Service center | Address | Appointment note |
|---|---|---|
| Denver Metro | 1351 5th St., Suite 100, Denver, CO 80204 | By appointment only. |
| Colorado Springs | 2447 North Union Blvd., Colorado Springs, CO 80909 | Walk-ins welcome, appointments encouraged. |
| Fort Collins | 3030 South College Ave., Fort Collins, CO 80525 | Walk-ins welcome, appointments encouraged. |
| Grand Junction | 222 South 6th St., Suite 208, Grand Junction, CO 81501 | Walk-ins welcome, appointments encouraged. |
| Pueblo | 827 West 4th St., Suite A, Pueblo, CO 81003 | Walk-ins welcome, appointments encouraged. |
Colorado Revenue Login vs Wrong Agency: DMV, IRS, Secretary of State, Unemployment and Local Tax
Use this table if you reached the Colorado Department of Revenue login page but your task is not actually a DOR tax task.
| Your issue | Likely correct portal | Why |
|---|---|---|
| Colorado individual income tax, state refund, payment, Letter ID or DOR notice | Colorado Revenue Online | This is the official Colorado state tax account system. |
| Colorado sales tax filing for participating home-rule jurisdictions | SUTS | SUTS is the special Colorado sales/use tax filing system. |
| Driver license, state ID, vehicle registration or DMV appointment | Colorado DMV / myColorado | DMV services are separate from tax account login. |
| LLC, corporation, trade name or annual report | Colorado Secretary of State | Entity formation is not handled by Revenue Online. |
| Federal IRS refund, transcript, EIN or IRS payment | IRS Online Account | Colorado DOR cannot access federal tax records. |
| Unemployment benefits or employer UI account | Colorado Department of Labor and Employment | Unemployment insurance is not a DOR Revenue Online tax account. |
| Home-rule city sales tax outside state-collected filing | City/local tax portal or SUTS if participating | Some home-rule jurisdictions have local filing rules. |
Official Colorado Revenue Login Sources and Safe Links
Use these official Colorado pages for final confirmation before signing in, making a payment, checking refund status, filing sales tax, scheduling a service-center appointment or calling taxpayer services.
Internal link status
No internal article links are added in this HTML because only live sitemap-verified URLs should be used for interlinking. This avoids linking to unverified or unavailable posts.
Editorial method
This guide organizes official Colorado Revenue Online, Revenue Online Help, SUTS, refund, payment, phone and service-center information into a user-first workflow. Final account, payment and filing decisions should always be verified on official Colorado pages.
Colorado Department of Revenue Login FAQs
Visible FAQs below match the FAQPage schema included at the end of this article.
What is the Colorado Department of Revenue login?
The official Colorado Department of Revenue tax login is Revenue Online, available through Colorado.gov/RevenueOnline.
Is MyTax Colorado the same as Revenue Online?
Most people searching for MyTax Colorado mean Colorado Revenue Online. Colorado’s official tax account portal is commonly called Revenue Online or ROL.
What can I do in Colorado Revenue Online?
You can manage Colorado tax accounts, file and pay certain taxes, check refund status, request a Letter ID, send secure messages and access account information.
What information do I need to set up an individual Revenue Online account?
You may need your most recent filed return, federal taxable income amount, refund amount or a Colorado Department of Revenue Letter ID.
What is a Colorado Revenue Online Letter ID?
A Letter ID is a security key printed on Colorado Department of Revenue letters. It begins with L and is followed by 10 digits.
How long does a requested Letter ID take?
Colorado says a requested Letter ID is mailed to the address on record and may take up to 10 business days to arrive.
Can I use one Letter ID for every Colorado tax account?
No. A Letter ID is generally associated with a particular tax type, so a Letter ID for one tax type may not unlock another tax account.
What is the Colorado Account Number?
The Colorado Account Number is an eight-digit account number established by the Colorado Department of Revenue for tax accounts.
What is the Colorado Revenue Online phone number?
The Colorado Taxpayer Services Helpline is 303-238-7378.
What are Colorado Revenue phone hours?
Taxpayer Service Representatives are generally available Monday through Friday, 8:00 a.m. to 4:30 p.m. Mountain Time, except state holidays.
Where do I check my Colorado refund status?
Use the official Colorado refund page and the Revenue Online refund status tool.
Do I need to call to check my Colorado refund?
Usually no. Colorado says the online refund tool shows the same refund status information staff sees, so you can check online first.
What is SUTS in Colorado?
SUTS is the Colorado Sales & Use Tax System used for filing and paying state-collected sales tax and participating home-rule sales and use taxes.
Is SUTS the same as Revenue Online?
No. Revenue Online is the broader Colorado tax account portal, while SUTS is a specialized sales and use tax filing system.
What is the Colorado SUTS support phone number?
Colorado lists SUTS support at 720-795-7759.
Can I make Colorado tax payments without signing in?
Some Colorado payments can be made through Revenue Online without full account sign-in, but other tax types may require login.
Where is the Denver Colorado Revenue service center?
The Denver Metro service center is at 1351 5th St., Suite 100, Denver, CO 80204, and it is by appointment only.
Can Colorado Revenue service centers help with driver license services?
No. Colorado says tax service center employees cannot assist with driver license or state ID services.
What should I prepare before calling Colorado Revenue?
Prepare your name, phone number, Colorado Account Number or Letter ID if available, tax type, tax year and a short explanation of the issue.
Is this website the official Colorado Department of Revenue website?
No. This is an independent informational guide. Use official Colorado Revenue Online and Tax.Colorado.gov pages for filing, payments, refunds, notices and legal tax decisions.
Final Recommendation: Use Colorado Revenue Online for Tax Login
For Colorado Department of Revenue login help in 2026, start with the official Revenue Online portal. Use Revenue Online for state tax accounts, refund status, payments, Letter ID requests, secure messages and many filing tasks. Use SUTS for participating sales and use tax filing, GIS for address-based tax rates, and the Taxpayer Services Helpline at 303-238-7378 when official online help does not solve the issue.
Last editorial update: June 7, 2026. Verify final login pages, payment options, refund steps, filing requirements, service-center availability and legal tax details on official Colorado Department of Revenue pages.