Colorado Corporation Taxes: What Your Business Needs to Pay
Colorado corporations pay a flat 4.25% corporate income tax, plus sales tax, payroll withholding, and possible local taxes. Here's what C Corps and S Corps owe and when.
Bizee Editorial Staff
Editorial Team
Colorado corporation tax at a glance
Filing fee: See Colorado Secretary of State for current formation fees
Processing time: [PROCESSING_TIME]
State agency: Colorado Department of Revenue
Annual report due: [STATE_FEE]
State tax rate: 4.25% flat corporate income tax rate (tax years beginning on or after January 1, 2024)
Colorado corporation taxes: what your business needs to pay
Colorado corporations face several tax obligations: a flat state corporate income tax, sales and use tax if you sell taxable goods or services, payroll withholding if you have employees, and possible local taxes depending on where your business operates. There's no Colorado franchise tax — corporate income tax is the main state-level obligation.
Colorado corporate income tax
Colorado taxes C corporations on their Colorado taxable income at a flat rate. For tax years beginning on or after January 1, 2024, that rate is 4.25% — temporarily reduced from 4.40% by Senate Bill 24-228. The flat structure means every dollar of Colorado taxable income is taxed at the same rate, with no brackets.
S corporations don't pay Colorado corporate income tax at the entity level. Instead, income passes through to shareholders, who report it on their individual Colorado income tax returns at the individual rate. The distinction matters when you're deciding which entity structure fits your business.
How Colorado taxable income is calculated
Colorado taxable income starts with your federal taxable income, then adjusts for state-specific additions and subtractions. Additions bring in income that's exempt at the federal level but taxable in Colorado. Subtractions remove income that Colorado treats preferentially — things like certain gains from qualified sales already taxed by Colorado.
If your corporation operates in multiple states, Colorado taxes only the portion of income apportioned to Colorado under the state's apportionment rules. A tax professional can help you figure out the right apportionment calculation for your situation.
Colorado corporate estimated tax payments
If your Colorado corporate income tax liability for the year exceeds $5,000 after credits, you need to make quarterly estimated payments. Missing or underpaying estimated taxes can mean interest charges on the shortfall — it's worth getting the schedule right from the start.
For a calendar-year corporation, the 4 quarterly due dates fall on April 15, June 15, September 15, and December 15. Each payment is 25% of the required annual estimated amount. Short tax years have prorated rules — check with a tax professional if your first year doesn't run a full 12 months.
Colorado sales and use tax
Colorado's state sales tax rate is 2.9%. If your corporation sells tangible personal property at retail, or provides specifically enumerated taxable services — things like lodging, gas, electric service, or telephone service — you need to collect and remit sales tax. Most services are not taxable unless they're listed in statute.
To collect sales tax, your corporation needs a Colorado sales tax license from the Colorado Department of Revenue. Sales for resale — where the goods become part of a product you sell — are exempt. Use tax applies when you buy taxable items without paying sales tax and use them in Colorado.
Employer payroll withholding
If your corporation pays employees, you need to withhold Colorado state income tax from their wages — any employee who is a Colorado resident or who performs services in Colorado triggers this requirement. The withholding obligation applies whenever you're already withholding federal income tax.
Register for a Colorado wage withholding license by filing Form CR 0100 with the Colorado Department of Revenue, or register online through Revenue Online. Your filing frequency — weekly, monthly, or quarterly — depends on your annual withholding liability. Businesses with $50,000 or more in annual withholding file weekly; $7,000–$49,999 file monthly; under $7,000 file quarterly.
Local and city business taxes
Colorado cities and counties can layer their own sales taxes on top of the 2.9% state rate, and the combined totals vary more than most people expect. In some unincorporated parts of Arapahoe County, the combined rate is 3.25%. In Castle Pines, the city adds 3.75%, bringing the total to 7.75%.
Check the local rate for every jurisdiction where your corporation makes taxable sales — not just where your office is located. Some municipalities also impose local business or occupational taxes beyond sales tax. Your city or county finance office is the right place to confirm what applies to your business.
Filing and return requirements
C corporations doing business in Colorado file Form DR 0112 with the Colorado Department of Revenue. For a calendar-year corporation, the return is due April 15. Colorado grants an automatic 6-month extension to file — but that extension doesn't push back the deadline to pay any tax owed. Pay what you estimate you owe by April 15 to avoid interest.
Colorado doesn't impose a separate franchise or privilege tax on corporations beyond the corporate income tax. That's one area where Colorado is simpler than many states — there's no additional annual privilege fee just for existing as a corporation here.
FAQ
4.25%. For tax years beginning on or after January 1, 2024, Colorado's corporate income tax rate is 4.25% — temporarily reduced from 4.40% by Senate Bill 24-228. Colorado uses a flat rate, so all Colorado taxable income is taxed at the same percentage with no graduated brackets.
It depends on the election. An S corporation doesn't pay Colorado corporate income tax at the entity level. Income passes through to shareholders, who report their share on their individual Colorado income tax returns. The S Corp itself may still have Colorado sales tax, payroll withholding, and local tax obligations depending on its activities.
April 15 for calendar-year corporations. Form DR 0112 is due on the 15th day of the fourth month after the close of the tax year. Colorado grants an automatic 6-month extension to file, but you still need to pay any tax owed by the original April 15 deadline to avoid interest charges.
No. Colorado doesn't impose a separate franchise or privilege tax on corporations. The main state-level tax obligation for a C corporation is the corporate income tax on Colorado taxable income. Local jurisdictions may add their own business or occupational taxes, but there's no statewide franchise tax.
Yes. Colorado's state sales tax rate is 2.9% on retail sales of tangible personal property and certain enumerated services. If your corporation makes taxable sales, you need a Colorado sales tax license and must collect and remit the tax. Local jurisdictions add their own rates on top, so the combined rate varies by location.
Yes, if your Colorado corporate income tax liability exceeds $5,000 after credits. Quarterly estimated payments are due on the 15th day of the 4th, 6th, 9th, and 12th months of your tax year — April 15, June 15, September 15, and December 15 for a calendar-year corporation. Each payment covers 25% of the required annual amount.
Yes. If your corporation has employees who are Colorado residents or who perform services in Colorado, you need to withhold Colorado state income tax from their wages. Register for a withholding license using Form CR 0100 or through Revenue Online. Your filing frequency — weekly, monthly, or quarterly — is assigned based on your annual withholding liability.
