Colorado Sales Tax Calculator (2026) — Add or Reverse Tax
Colorado's combined sales tax rate is 7.89% (2.90% state + 4.99% average local). Use the calculator below to add Colorado sales tax to a price, or reverse a tax-included total to find the pre-tax price and exact tax amount.
How to use this calculator:
- Adding tax — enter a pre-tax price, pick "Add tax to price," and the calculator applies the Colorado rate to show the tax amount and final total.
- Reversing (extracting) tax — enter a total that already includes tax, pick "Extract tax from total," and the calculator divides by 1 + the rate to isolate the pre-tax price and the exact tax paid.
- Pick the rate that matches your situation: the average combined rate is a good statewide estimate, but the state-only or maximum-local rate is more precise if you know the exact city or county.
Understanding Colorado Sales Tax
Colorado's state sales tax rate is 2.90%, and local jurisdictions add an average of 4.99% on top, bringing the typical combined rate to 7.89%. Rates vary by city and county — the highest combined rate in Colorado can reach 12.00%.
Colorado has one of the lowest state sales tax rates (2.9%) but among the highest average local add-ons, giving it a wide range of combined rates by city.
Colorado also levies a state income tax, which shapes how much the state relies on sales tax revenue relative to other funding sources.
Groceries
Exempt from Colorado state sales tax.
Largest city
Denver
State income tax
Yes
Why Reverse Sales Tax Calculation Matters
Receipts and marketplace payouts usually show only the tax-included total, so separating revenue from tax collected — for bookkeeping, expense reports, or checking what an item costs before Colorado's tax is applied — means working backward from that total. Dividing by (1 + rate) isn't the same as subtracting the rate, which is why the calculator above handles it exactly.
Colorado Taxability at a Glance
🛒 Groceries
Exempt
👕 Clothing
Taxable
💊 Prescription drugs
Exempt
How Colorado Fits Into the US Sales Tax System
The United States has no federal sales tax — unlike VAT/GST countries where a national rate applies everywhere, US sales tax is set entirely at the state level, and each of the 50 states (plus DC) independently decides whether to levy one, what the rate is, and what's exempt. Colorado is one of the 45 states (plus DC) that levies a general sales tax. States can also authorize cities, counties, and special districts to add their own local rate on top of the state rate — which is why the "combined rate" shown on this page is a blend, not a single fixed number, and why it can differ from the state rate alone by several percentage points depending on the exact delivery address.
History & Rate Breakdown
Colorado's 2.9% state sales tax rate is one of the lowest in the country, a legacy of the state's strong home-rule tradition: roughly 70 Colorado cities — including Denver, Aurora, and Colorado Springs — operate as home-rule jurisdictions that administer and collect their own local sales tax entirely independently of the state.
Colorado's combined rate is overwhelmingly a local story: the 2.9% state rate is layered with county, city, and special-district taxes that average 4.99% and can push the total above 11% in places like Aspen. Because home-rule cities self-collect, a business with customers across multiple Colorado cities may need to file separate returns with each home-rule city in addition to the state.
Where the Money Goes
Colorado's low state sales tax rate means income tax carries more of the state budget, while local sales tax — heavily self-collected by home-rule cities — mostly funds municipal services directly.
Business Use Case: Registering & Collecting Colorado Sales Tax
A retailer crossing Colorado's $100,000 economic nexus threshold must register with the Colorado Department of Revenue for state-collected jurisdictions, but if its buyers are concentrated in a home-rule city like Denver, it may also need to register and file separately with that city's own tax office — Colorado's Sales and Use Tax System (SUTS) portal was built to simplify this multi-jurisdiction filing burden.
Key terms: combined rate — state rate plus applicable local add-ons; reverse sales tax — working backward from a tax-included total via total ÷ (1 + rate); economic nexus — a sales threshold that obligates an out-of-state seller to collect tax without a physical presence; marketplace facilitator — a platform that remits tax on behalf of third-party sellers.
Real-World Example: Adding Tax to a Price
A $500.00 purchase in Colorado at the average combined rate of 7.89%:
- Tax amount: $500.00 × 7.89% = $39.45
- Total price: $500.00 + $39.45 = $539.45
Real-World Example: Extracting Tax From a Receipt Total
A receipt shows a $749.99 tax-included total in Colorado at the average combined rate of 7.89%:
- Pre-tax price: $749.99 ÷ (1 + 7.89%) = $695.14
- Tax amount: $749.99 − $695.14 = $54.85
Colorado Sales Tax Compliance for Sellers
Remote and online sellers establish economic nexus in Colorado once they exceed $100,000.00 in annual sales (no separate transaction-count test). Once nexus is established, a seller must register with the state, collect Colorado sales tax at checkout, and file returns on the state's required schedule. Marketplace facilitators (Amazon, Etsy, eBay, Walmart) generally collect and remit on behalf of third-party sellers automatically.
Frequently Asked Questions — Colorado Sales Tax
What is the sales tax rate in Colorado?▾
Does Colorado tax groceries?▾
Does Colorado have a state income tax?▾
When do online sellers need to collect Colorado sales tax?▾
How do I calculate Colorado sales tax on a purchase?▾
How do I reverse Colorado sales tax to find the price before tax?▾
What is the formula to back out sales tax from a receipt in Colorado?▾
References & Sources
Methodology: the combined rate shown is the state rate plus the population-weighted average of local (city/county/district) rates reported by the Tax Foundation for 2026; it is an average, not the exact rate for any single address — use the county table above where available, or confirm the exact local add-on with the Colorado Department of Revenue, for a specific delivery address. Economic nexus thresholds are sourced from the Sales Tax Institute's Economic Nexus State Guide.
Rates last verified January 2026. Colorado sales tax rates and thresholds change over time — always confirm current figures with the Colorado Department of Revenue before filing or invoicing. This tool is for estimation and educational purposes only and is not tax, legal, or accounting advice.
Jordan Hayes
Verified AuthorPersonal Finance Content Strategist
Jordan is a personal finance content strategist with 9+ years writing about mortgages, retirement, tax strategy, and budgeting. Every guide is cross-referenced with IRS publications, Federal Reserve data, and CFPB guidance to make complex calculations accessible. Editor at CalculatorApp.me.
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Tax-rate data, review & limitations
Jurisdiction: Colorado, United States. Effective date: January 1, 2026. Reviewed by CalculatorApp.me editorial staff on July 26, 2026; next scheduled review: October 26, 2026.
Rates are reference estimates, not tax advice. Local rules, exemptions, filing status, and effective dates can change the amount due.
Primary sources
- Tax Foundation, 2026 State and Local Sales Tax Rates
- Relevant state department of revenue guidance