Sales Tax on Cleaning Services in Colorado (2025)

Colorado's Department of Revenue settled the janitorial-services question decades ago through a special ruling rather than a headline statute, and that ruling still governs how cleaning companies bill clients today. The short version: labor charges for cleaning real property are not subject to Colorado state sales tax, but the state's uniquely fragmented tax structure, with dozens of home-rule cities collecting their own sales tax independently of the state, means the real answer depends on which city the job is in.

What Special Ruling SR-26 actually says

Colorado's general sales tax statute, C.R.S. §39-26-104, taxes retail sales of tangible personal property and a defined list of services, and janitorial labor is not on that list. The Department of Revenue's Special Ruling SR-26, "Janitorial Services," spells out the practical application: charges for cleaning, sweeping, mopping, dusting, and similar maintenance work performed on real property are service charges, not sales of tangible personal property, and are therefore not subject to state sales tax. The ruling also addresses the supplies question directly, treating janitorial companies as consumers of the cleaning products they use on the job, meaning the company generally owes tax when it purchases those supplies, rather than collecting tax from the client on the finished service.

This structure mirrors how several other states without a dedicated cleaning-services tax handle the issue: tax attaches to the point where tangible goods change hands or get consumed, not to the act of providing labor.

Why home-rule cities complicate the picture

Colorado is unusual because roughly 70 of its municipalities are "home-rule" cities that administer their own sales tax under their own municipal code, separate from the Department of Revenue's state-collected sales tax. Cities like Denver, Colorado Springs, Aurora, and Boulder each maintain independent tax codes, and while most home-rule cities follow the state's general approach of not taxing labor services, some municipal codes define taxable services more broadly than the state does. A cleaning company operating in multiple home-rule cities cannot assume that because the state exempts janitorial labor, every city does too; each home-rule city's finance or revenue office is the authoritative source for that city's specific rules.

Worked example: a statewide Colorado contract with a Denver stop

Consider a facilities company managing a $9,000 monthly cleaning contract across three Colorado locations: one in unincorporated Jefferson County (state-collected, follows SR-26), one in Colorado Springs (also state-collected as of current administration), and one inside Denver, a home-rule city with its own sales and use tax ordinance. For the Jefferson County and Colorado Springs locations, the company issues invoices with no state or local sales tax on the labor portion, consistent with SR-26. For the Denver location, the company should confirm current treatment directly with Denver's Department of Finance, since home-rule cities are not bound by the state's ruling and can, in principle, reach services the state does not.

What this means for your business

• Default assumption: labor is exempt. For the majority of Colorado jurisdictions, cleaning labor invoices carry no state sales tax, consistent with SR-26.
• Always check home-rule cities individually. If you work in Denver, Boulder, Colorado Springs, Aurora, or any other self-collecting municipality, verify current treatment with that city directly rather than assuming statewide parity.
• Supplies are a cost of doing business, not a pass-through. Because you're treated as the consumer of cleaning products under SR-26, tax paid on supply purchases should be baked into your pricing rather than billed separately to clients.
• Keep a jurisdiction log if you operate regionally. A facilities company covering the Front Range corridor may cross five or six different home-rule and state-collected jurisdictions in a single week; a simple reference table prevents costly mistakes.
• Bundled contracting work may shift the analysis. If cleaning is part of a larger construction or renovation contract, different rules for contractors may apply; keep janitorial maintenance work invoiced separately from any construction-adjacent work.

Colorado's home-rule rate patchwork at a glance

Colorado's 2.9% state rate is the lowest base sales tax rate of any state that levies one, but local add-ons in home-rule cities push effective combined rates well above the state figure for anything that is taxable in that city. That local layer is the piece cleaning operators most often overlook, since the state-level exemption gets most of the attention.

Frequently asked questions

For a side-by-side look at how neighboring frameworks compare, see our guides to cleaning services sales tax in Alaska and cleaning services sales tax in Arizona.

Home rule is the defining feature of compliance here, and it is why a single state-level answer is never sufficient. The department's sales and use tax section covers state-administered jurisdictions, but self-collecting home rule cities set their own base and can reach transactions the state does not. Contractors running crews across the Front Range should treat each home rule city as a separate determination. The AICPA state and local tax resource center frames the multi-jurisdiction analysis that a company billing Denver, Boulder, and Aurora on one contract has to perform.