Highlands Ranch sales tax: why the rate is 5 percent and there is no city tax

The sales tax rate in Highlands Ranch is 5 percent at most addresses: 2.9 percent to Colorado, 1 percent to Douglas County, 1 percent to RTD and 0.1 percent to the cultural facilities district. Highlands Ranch adds nothing, because it isn't a city, and groceries carry no sales tax.

Search for the rate and you may get an answer of "4 to 5 percent," which is accurate and not much help. The gap is RTD, and it's one of several places where Highlands Ranch works differently from the towns around it.

What is the sales tax rate in Highlands Ranch?

Four taxes apply, and the Colorado Department of Revenue collects all of them. There's no local rate on top.

Tax	Rate	Groceries
State of Colorado	2.9%	Exempt
Douglas County	1.0%	Exempt
Regional Transportation District (RTD)	1.0%	Exempt
Scientific and Cultural Facilities District	0.1%	Exempt
Highlands Ranch	None	None
Total	5.0%	0%

The rates come from the state's DR 1002 rate publication, and none of them changed on July 1, 2026. Each of the four exempts food for home consumption, so a grocery run in Highlands Ranch costs nothing in sales tax. Drive to Parker, which taxes groceries at 3 percent, and it does.

Why do some sources say 4 percent?

Because RTD doesn't cover every address. The DR 1002 describes the district's Douglas County territory as the northern part of the county: Lone Tree, Parker, the Acres Green area and "most of Highlands Ranch." An address outside RTD drops its 1 percent and pays 4.0 percent. That's why the automated answers hedge between 4 and 5.

For a specific address, the state's sales tax lookup tool lists every jurisdiction that applies, and the Department of Revenue treats a dated screen print of the result as proof that a business relied on it. RTD also answers boundary questions at 303-299-6000.

Is Highlands Ranch a city?

No. Highlands Ranch is an unincorporated community in Douglas County, counted by the Census Bureau as a census-designated place. It has no town council and no municipal government. County government comes from Douglas County, and local services come from the Highlands Ranch Metro District, an elected special district funded mainly through property tax, while the community association handles covenants.

For taxes, that has three consequences. There's no city sales tax, which is why the rate here runs 3 points under Parker's. There's no city use tax. And there's no municipal business license, which surprises people who move a business in from Parker or Castle Rock. The metro district shows up on the property tax bill instead, as a mill levy alongside the county's.

Is Highlands Ranch part of Littleton?

No. The City of Littleton is a separate home rule city that collects its own 3.75 percent sales tax, according to the DR 1002. Its rate and its licensing rules stop at the city limits and don't apply to a Highlands Ranch address.

How does the rate compare with Lone Tree, Parker and Castle Rock?

Every town around Highlands Ranch adds its own city tax, so the difference shows up the moment you shop across a boundary.

Where the sale happens	Total rate
Highlands Ranch	5.0%
Lone Tree, including Park Meadows	7.5%
Parker	8.0%
Castle Rock	8.1%

Lone Tree's city rate is 2.5 percent, Parker's is 3 percent, and Castle Rock's is 4.2 percent. Castle Rock sits outside both RTD and the cultural facilities district, so its total is state, county and town only. All three are home rule towns that collect their own city tax.

The rate follows where you take possession, not where you live. Carry a purchase out of a Park Meadows store and you've paid Lone Tree's 7.5 percent. Have it delivered to your house and, under Colorado's destination sourcing rule, the state-collected taxes follow the delivery address. Home rule towns set their own delivery rules; Parker, for one, lets its retailers deduct sales shipped out of town.

Buying a car as a Highlands Ranch resident

Colorado taxes vehicles by where they'll be registered as much as where they're bought. Under the state's rules, a dealer outside your area shouldn't charge its city, county or district sales taxes if you live elsewhere and will register the car elsewhere. The Douglas County clerk then collects any local use tax that applies before titling and registration. Douglas County's 1 percent applies to vehicles as use tax, and so do RTD's 1 percent and the cultural district's 0.1 percent.

Home rule cities write their own vehicle rules, which the state's guidance doesn't cover. Lone Tree exempts motor vehicles from its city sales tax entirely. At a dealer anywhere else, ask for the buyer's order to show each tax separately, and check them against your registration address.

Do you need a business license in Highlands Ranch?

Not a municipal one. There's no town to issue it. What a Highlands Ranch business may need comes from the state:

• A Colorado sales tax license, if you sell taxable goods. It's issued through MyBizColorado or on form CR 0100. The fee is prorated by when you apply, $12 for the second half of 2026, plus a $50 deposit on a new account that the state refunds automatically once you've paid $50 in state sales tax.
• One return, filed with the Department of Revenue, covering all four taxes in the table above.
• Registration with the Colorado Secretary of State if the business is an LLC or corporation, and a look at your community association's rules on running a business from home.

Selling into a home rule town is where a license can come back into the picture. Parker requires a Business and Tax License of everyone engaged in business inside its limits, whether or not they collect sales tax. Our Highlands Ranch tax preparation page covers how the unincorporated status plays out for home-based businesses, and the home office deduction post covers what that spare-room office is worth on the income tax side.

Where this touches your income tax return

If you itemize, Schedule A lets you deduct either state and local income tax or general sales tax, not both, and for most Colorado households the income tax figure is larger. The year you buy a car is the year to compare them. Whichever you pick shares the state and local tax limit, $40,000 per the IRS ($20,000 married filing separately), with your property tax, including the metro district's levy.

Business owners have a separate question every year: whether the state sales tax account still matches what the business sells. A small business return is a sensible time to check. Charles Trautman is an IRS Enrolled Agent who has prepared individual and small business returns from the Lone Tree office since 2010, a few minutes east along C-470, and most Highlands Ranch clients send documents through our secure portal instead of driving over.

Common questions

Sources

• Colorado Department of Revenue: DR 1002 sales and use tax rates
• Colorado Department of Revenue: Sales tax rate changes
• Colorado Department of Revenue: Sales tax guide
• Colorado Department of Revenue: Standard retail license
• Colorado Department of Revenue: Motor vehicle sales
• Colorado sales tax lookup tool
• Douglas County: Sales tax rates
• Highlands Ranch Metro District: How Highlands Ranch operates
• U.S. Census Bureau: Highlands Ranch CDP profile
• City of Lone Tree: Taxes
• Town of Castle Rock: What is the sales tax rate?
• Town of Parker: Sales and use tax rates
• Colorado Secretary of State: Checklist for new businesses
• IRS: Topic 503, Deductible taxes

General information from Tax Shop in Lone Tree, Colorado, written by Charles Trautman, EA, and current as of September 18, 2026. Sales tax rates and district boundaries change, so confirm a specific address with the Colorado Department of Revenue before relying on it. Call us about the income tax side.