How to Get a Colorado Sales Tax License (Step-by-Step Guide)

Eric DawsonByEric Dawson Updated Business

If you are asking how do i get a colorado sales tax license, a business that sells, rents, or leases tangible personal property must get a Sales Tax Account / License from Colorado and file sales tax returns. Colorado generally does not tax services at the state level, though some home rule cities do tax certain services. The state sales tax rate is 2.90%, and the average combined state and local rate is 7.89%.

As of September 2026, filing frequency depends on monthly tax collected: annual for $50 or less, quarterly for under $1,100, and monthly for $1,100 or more. Returns are due on the 20th day of the following month or period, and a return is required for every filing period, even with no sales.

How Do I Get a Colorado Sales Tax License

The license establishes the account used for required filings.

Colorado generally does not impose state sales tax on services, so the trigger here is tied to tangible personal property rather than most service work. Local obligations can differ.

Businesses should register before they begin the activity that creates the tax duty. After registration, the account should be used to report and pay the tax that is collected, and the business should keep filing for every required period even if no tax was collected. If the account is no longer needed, the Colorado Department of Revenue should be notified as soon as possible.

What the License Does

The license connects the business to Colorado’s sales-tax system and lets the state track reporting and payment. Gross sales must be reported by site location, and each location must be filed on a separate return. Non-physical locations also need to be set up before the return is started, so the location record is ready before filing.

What to Keep in Mind

Some businesses also need to watch the payment threshold for state sales tax collected during the year. When payments exceed the state’s annual threshold, payment must be made by Electronic Funds Transfer. Wholesale businesses with sales-tax liability of $600 per year or less can file, though the remaining rule is not provided here.

Failure to file has consequences beyond a late return. The Colorado Department of Revenue may file a return on the business’s behalf and estimate the amount billed, and the estimated return stays due and payable until an actual return is filed. That makes the license more than a registration step because it also sets up the ongoing filing duty tied to the account.

Who Needs to Register and What Colorado Taxes Apply

Registration and service tax rules noted above apply.

For that reason, the answer depends on what a company sells and where it operates. Location-based deductions and exemptions apply.

When Services Can Still Face Local Tax

Local rules can change the result even when state tax does not apply. Home-rule cities may impose sales tax on certain services, so a service business cannot assume that Colorado state treatment ends the inquiry. Location matters because the tax rules, zoning laws, and registration requirements can vary by place.

Because Colorado uses site-based reporting, each location must appear on a separate return. Each DR 0100 should list a site number, such as 00000001-0010, so the Department can identify and allocate local-jurisdiction taxes; a return started too early has to be backed out and begun again after the locations are in place.

Business Type and Tax Type Matter

Different business forms bring different tax results. LLC members are treated as self-employed and must make self-employment-tax contributions toward Medicare and Social Security, while profits and losses can pass through to personal income without corporate taxes. Limited partnerships also pass profits through, and the general partner must pay self-employment taxes. Those rules sit alongside sales-tax registration, not in place of it.

Colorado’s state sales-tax rate is 2.90%, while its average combined state-and-local sales-tax rate is 7.89%. On the filing side, businesses paying more than $75,000 per year in state sales tax must pay by Electronic Funds Transfer. Wholesale filing rules also apply.

If I were in your position, I would treat the safer line as the broad one and register as soon as I start selling, renting, or leasing tangible personal property in Colorado.

Colorado Filing Deadlines and Payment Rules

Beyond that, Colorado sales tax license holders file on a schedule that matches the amount of sales tax collected each month. A return is due even when no sales were made and no tax was collected.

Filing runs annually, quarterly, or monthly. Annual filers owe by January 20, quarterly filers owe by the 20th after each quarter, and monthly filers owe by the 20th day of the following month.

Filing Frequency Monthly Sales Tax Collected Due Date
Annual $50 or less per month January 20
Quarterly Under $1,100 per month April 20, July 20, October 20, or January 20, depending on the quarter
Monthly $1,100 or more per month 20th day of the following month
EFT payment More than $75,000 per year in state sales tax 20th day of the month following the reporting period

Weekend and holiday due dates move to the next business day. Wholesale businesses may file.

Payment timing also matters because the Department of Revenue can file a return on the business’s behalf if a return is missed, then bill an estimated amount. They remain due until an actual return is filed.

Records should stay aligned with the filing period that applies to each return. The 20th remains the key cutoff for most Colorado sales tax returns, whether the filing is monthly, quarterly, or tied to EFT reporting.

Step-By-Step Registration Checklist

Start by confirming that the business needs a Colorado sales tax license. Then gather the information needed for registration, set the correct account up, and keep the filing calendar tied to the return period that applies.

Prepare the Return Profile

Before filing, choose the business structure that will carry the account and make sure the business has the right tax ID number. A federal EIN is used for taxes, hiring employees, opening a bank account, and applying for licenses and permits, while a DBA can help a business operate under a name other than the owner’s personal legal name or the formal entity name.

  1. Identify every Colorado activity that creates sales tax duties, including selling, renting, or leasing tangible personal property.
  2. Set up the business structure and tax ID details before starting the registration process.
  3. Collect the site information that will appear on the return, including the site number.
  4. Add any non-physical sales locations before beginning the return.
  5. Use the correct current DR 0100 form and leave no applicable line blank.
  6. Enter 0 where there is no amount and make sure the amounts appear on lines 1, 3, 5, 7, 9, 12, 14, 17, and 18.
  7. Check the filing frequency that applies and calendar the due date for annual, quarterly, monthly, or EFT filing.

Next, complete the account setup with care if there are multiple locations. Use the site number on the return. If a return is started before all locations are added, back it out and start again after the missing locations are entered.

Confirm Filing and Payment Details

After the account is active, match the filing method to the amount of state sales tax collected. Annual, quarterly, or monthly filing applies according to the amount collected.

Finally, keep the account current and close it only when the license is no longer needed. If that happens, notify the Colorado Department of Revenue as soon as possible, keep the records tied to each filing period, and save the details needed to support future returns, overpayment credits, or amendments.

How to Handle Returns, Amendments, and Location Details

Multiple Colorado locations require separate reporting, and each location’s gross sales must appear on its own return. Returns also need to be filed for every period, even when no sales were made and no tax was collected.

Location Reporting

Use the previously noted site number for each DR 0100. Deductions and exemptions apply only to the particular location shown on that return.

If a return is started too soon, back out of the return and begin again after the locations have been added.

Amended Returns

Amended filings require the Amended Return Box to be marked, and the amended return replaces the original return in its entirety. Use the correct service-fee rate for the period being amended, because the rate must match that filing period. Credits for an overpayment may be taken on a subsequent Retail Sales Tax Return DR 0100.

Blank lines should not be left open on the return, so complete every applicable and required line and enter 0 when no amount applies. Amounts must appear on lines 1, 3, 5, 7, 9, 12, 14, 17, and 18, which keeps the filing complete and easier to process. The service fee, also called the vendor fee, is calculated on DR 0100 and deducted from the Total Amount Owed, and it benefits businesses that file and pay on time.

Failure to file has the consequences noted earlier, so the original filing still matters. Estimated returns remain subject to the earlier rule until an actual return is filed.

When to Close an Account and Keep Records Straight

Close the account as soon as a Colorado sales-tax license is no longer needed.

Keep the filing record active until that closure is complete, because every filing period still requires a sales-tax return even when no sales were made and no tax was collected.

Use Site Numbers Carefully

Use the appropriate site number.

Separate records by location help keep the filing history clear when a business has more than one site. Net Sales should be the same in each applicable column, and the return should show all tax columns as corrected rather than only the difference.

Keep Returns Aligned

Retain copies of filed returns, amended returns, and any payment records so the reporting trail stays consistent from one period to the next. If tax was underreported, file a separate form for the same period, and if an overpayment was made, credit may be taken on a subsequent Retail Sales Tax Return (DR 0100).

Recordkeeping matters after closure as well, because estimated returns remain due and payable until an actual return is filed. When the account is closed and the paperwork is organized by period and site, the business can match each filing to the correct location and keep the state record straight.

Frequently Asked Questions

Who Needs a Colorado Sales Tax Account / License?

A business selling, renting, or leasing tangible personal property must get a Colorado Sales Tax Account / License and file sales-tax returns. Colorado generally does not impose state sales tax on services, although some Colorado home-rule cities charge sales tax on certain services.

Does Colorado Tax Services?

Colorado generally does not impose state sales tax on services. Local exceptions apply.

How Often Do Colorado Sales-Tax Returns Need to Be Filed?

Filing frequency depends on the amount of sales tax collected monthly. Annual filing applies if $50 or less per month is collected, quarterly filing applies if under $1,100 per month is collected, and monthly filing applies if $1,100 or more per month is collected. A sales-tax return is required for every filing period, even when no sales were made and no tax was collected.

What Happens if a Colorado Sales-Tax Return Is Late?

If a return is not filed, the Colorado Department of Revenue files a return on the business’s behalf and estimates the amount billed. Beyond that, if the 20th falls on a weekend or holiday, the due date is the next business day.

Can One Return Cover More than One Colorado Location?

Gross sales must be reported by site location, and each location must be filed on a separate return. Deductions and exemptions apply only to the particular location reported. Each DR 0100 should list a site number so the Department can identify and allocate local-jurisdiction taxes.

How Are Amended Colorado Sales-Tax Returns Filed?

For an amended return, mark the Amended Return Box and show all tax columns as corrected, not just the difference. The amended return replaces the original return in its entirety. If tax was underreported, file a separate form for the same period.

Colorado sales-tax filing depends on what a business sells, where it operates, and how much tax it collects. A return is due for every filing period, locations are reported separately, and amended returns must be completed as corrected rather than adjusted line by line. Careful filing matters because late or missing returns can lead to estimated bills, and the right DR 0100 version should always be used.

References

Sources read in September 2026.

Eric Dawson

I'm Eric Dawson, and I write The Money Watch from north Columbus, Ohio. Most of what I cover comes from my own life: renting, a 2014 Honda Fit, parking, computers, food and the bills behind all of it. I spent four years in an apartment-property office and eleven on a distributor's operations desk, reading leases and invoices. Where you need real information, I research the maker's or agency's own page and independent sources and report what they publish. I don't give tax, investment, legal or medical advice.