Colorado LLC Sales Tax — Registration, Rates & Collection

If your Colorado LLC sells taxable tangible goods or certain services, you must register for a sales tax license, collect tax from customers, and remit it to the appropriate authorities. Colorado has one of the most complex sales tax systems in the country due to home-rule cities and layered jurisdictions. For the full tax overview, see our Colorado LLC tax guide. For formation, see how to form a Colorado LLC.

Colorado's Layered Sales Tax System

Colorado's sales tax isn't a single rate — it's a combination of multiple taxing jurisdictions:

Home-Rule Cities — Colorado's Unique Complexity

Colorado has over 70 home-rule cities that collect and administer their own sales tax independently from the state. Major home-rule cities include:

• Denver — 4.81% city rate (registers at denvergov.org/tax)
• Aurora — 3.75% city rate
• Colorado Springs — 3.07% city rate
• Lakewood — 3.0% city rate
• Fort Collins — 3.85% city rate
• Boulder — 3.86% city rate

If your LLC sells into home-rule cities, you may need to register separately with each city, file separate returns, and remit tax directly to them. This is NOT handled through the state's system.

How to Register

State sales tax license:

1. Register through MyBizColorado (mybiz.colorado.gov) or directly at Colorado Revenue Online (colorado.gov/revenueonline)
2. Provide your EIN, LLC information, and business location
3. Receive your Colorado Sales Tax License (also called a Sales Tax Account)
4. Fee: varies by location ($16 state minimum; additional city/county fees possible)

Home-rule city registration:

• Each home-rule city has its own registration process and portal
• Denver: denvergov.org/tax
• Must register separately from the state system
• Most cities also charge a license fee

What's Taxable in Colorado

Taxable:

• Tangible personal property (physical goods)
• Some digital products (software, streaming — depends on delivery method)
• Certain services (varies significantly by jurisdiction)
• Restaurant food and drink
• Prepared food

Exempt:

• Groceries (food for home consumption is exempt from the 2.9% state rate, but some cities still tax it)
• Prescription drugs and medical devices
• Machinery used in manufacturing (state-level exemption)
• Agricultural equipment
• Residential energy (natural gas, electricity)

Filing and Remittance

Filing frequency (determined by your tax volume):

• Monthly: If you collect $300+ per month in state sales tax
• Quarterly: If you collect less than $300 per month
• Annually: Very small volumes (under $15/month average)

Due dates:

• Monthly returns: 20th of the following month
• Quarterly returns: 20th of the month following the quarter end
• Annual returns: January 20 of the following year

Vendor fee discount: Colorado allows you to retain 3.33% of the tax you collect (up to $1,000/month) as compensation for acting as a tax collector. This is filed on your return.

Economic Nexus (Remote Sellers)

Since the 2018 Wayfair decision, Colorado requires remote sellers (businesses with no physical presence) to collect sales tax if they exceed:

• $100,000 in Colorado sales in the current or prior year

This applies to e-commerce LLCs selling into Colorado from other states.

FAQ

Do I need a sales tax license if I only sell services?

It depends on the specific service and location. Many professional services (consulting, marketing, legal) are not taxable in Colorado at the state level. However, some services are taxable in certain home-rule cities. Check with the Colorado Department of Revenue and your specific municipality.

How do I determine the right tax rate for a sale?

Use the Colorado Department of Revenue's lookup tool at colorado.gov/tax to determine the combined rate for any Colorado address. For home-rule cities, verify the rate directly with the city.

What happens if I collect the wrong amount?

You're responsible for remitting the correct amount regardless of what you collected. If you under-collected, you owe the difference. If you over-collected, you must still remit the full amount collected.

Do I need to collect sales tax on online sales?

If you sell taxable goods to Colorado customers and exceed the $100,000 economic nexus threshold, yes — even if you have no physical presence in Colorado. Register through the Colorado DOR.

What's the penalty for not registering?

Operating without a sales tax license can result in penalties, interest on uncollected taxes, and potential criminal charges for willful non-compliance. Register before making your first taxable sale.