Key figures
Colorado advisory
2026, with sources
Incentives
Colorado has no statewide R&D credit. The Enterprise Zone program, run by the Office of Economic Development and International Trade (OEDIT), carries a research credit for increased research spending in a zone, along with job-training and new-employee credits, all pre-certified before the work is done.
QSBS follows the federal rule, because Colorado starts from federal taxable income. Founders who sell qualified small business stock pay no Colorado tax on the federally excluded gain.
Where founders go wrong
Colorado layers three governments on a company: the state, the home-rule city and FAMLI. Each has its own account, its own return and its own deadline, and none of them tells the others you exist.
- Registering with the state for sales tax and forgetting the home-rule city.
- Assuming SaaS is untaxed because the state doesn’t tax it.
- Missing the FAMLI registration, which is separate from UI and withholding.
- Paying a Denver employee the state minimum wage.
- Delaying the final paycheck after a termination: in Colorado it is due immediately.
The federal baseline
This page covers what Colorado adds. The federal rules underneath it apply here too.
Common questions
Does Colorado have an R&D credit?
Not statewide. Colorado’s research credit is part of the Enterprise Zone program, so it depends on where the research is done and is claimed through OEDIT’s certification process. Many Denver-area neighborhoods are in zones; check the map before assuming either way.
What catches founders out in Colorado?
Usually Denver: a separate sales tax license, a Denver tax on SaaS that the state doesn’t tax, the occupational privilege tax, and a higher minimum wage. A company with an office in Denver deals with the city as often as with the state.
Advisory next door
- WYWyoming advisoryWyoming has no income tax for companies or people, so R&D credits, QSBS and NOL questions don’t arise; the planning issues are sales tax on downloaded software and keeping the registration current.
- NENebraska advisoryNebraska’s Angel Investment Tax Credit gives investors a refundable credit for backing small Nebraska tech companies. Personal and corporate rates are falling to 4.55% in 2026.
- KSKansas advisoryKansas’s R&D credit is 10% of incremental research spending and transferable by companies with no tax to offset. Single sales factor from 2027 changes where Kansas income lands.
- OKOklahoma advisoryOklahoma’s incentives are targeted programs rather than a broad R&D credit, and its three-factor formula makes office location a corporate tax decision.
- NMNew Mexico advisoryNew Mexico’s R&D credit can offset gross receipts and withholding tax and is partly refundable to small businesses. Combined-report elections lock in for seven years.
- AZArizona advisoryArizona’s R&D credit is 24% on the first $2.5 million and 15% above, no longer refundable from 2026 but carried forward ten years. QSBS follows the federal rule.
- UTUtah advisoryUtah’s research credit is non-refundable, with a 5% part that carries forward 14 years and a 7.5% part that doesn’t. QSBS follows the federal rule.
Founder guides on this
- R&D taxThe R&D tax credit and Section 174A for startupsEngineering salaries can earn a federal R&D credit against payroll tax, and Section 174A lets you deduct US research again. What qualifies, what to track.
- Sales taxSales tax nexus for startups: when you owe tax in a stateSince Wayfair, selling into a state can create a sales tax obligation. How economic nexus works, why SaaS is taxable in some states and when to register.
- ComplianceFirst-year compliance calendar for a Delaware C-corpDelaware franchise tax, 1099s, the federal return, payroll filings, state annual reports and sales tax: the deadlines a young C-corp misses most, by month.
More of the Colorado guide
- AccountingAccounting and state tax in ColoradoCorporate tax, conformity to federal rules, apportionment and what it does to your books
- ReceivablesReceivables and sales tax in ColoradoSales tax registration, economic nexus, whether SaaS is taxable, and collecting from customers
- PayablesPayables and contractors in ColoradoPaying vendors and contractors: 1099 filing, use tax, contractor tests and withholding
- PayrollPayroll taxes and employer rules in ColoradoWithholding, unemployment insurance, paid leave, minimum wage and the rules on paydays
- ComplianceCompliance and filings in ColoradoRegistering to do business, annual reports, franchise tax and the filing calendar
Sources
Checked against each agency’s own page on . Rates and thresholds change, usually on January 1.
General information for US companies, not tax, legal or accounting advice for yours. Rules and thresholds change; confirm the specifics with a CPA or the agency before you act on them.