Call 303-386-5200

Now Accepting New Clients!

Download a FREE 2021 Income Tax Organizer!

Welcome to Duncan & Company, LLC! Formerly, Duncan Accounting & Tax, LLC, we have expanded our services to include assurance servcies (audit, reviews and compilations) for small businesses, middle-market companies, and nonprofit organizations! We are still the same trusted CPA and business advisor firm with more services to meet your personal and business needs! We have over 25 years of experience providing accounting/bookkeeping, assurance, and tax services to individuals, small businesses, and nonprofit organizations. We also have advanced degrees in taxation! 

We provide:

‚ÄčFeel free to browse our site.

Our monthly newsletters are packed with valuable information on the latest changes in accounting and tax laws and regulations.

Our financial calculators can help you with payroll, retirement and planning, business and personal finance, and other "what-if" scenarios.

You can even pay your invoice through our "Make a Payment" page. 

Our Client Portal link gives you access our secure encrypted portal where you can safely send us confidential documents!

Please email us below or call us today at (303) 386-5200 for a free consultation!

We look forward to serving you!

Duncan & Company, LLC
(303) 386-5200

Ensure a bright future for your loved ones

Father and son on beach

What can we do for you?


Services we provide


Who we are and what we do


Newsletters updated monthly

Financial Calculators

Tax & financial calculators

Client Portal

Secure file sharing


Important dates and deadlines

Be prepared for rainy days

Dollar bills

Contact Duncan & Company, LLC

17128 E. Cedar Gulch Dr. • Parker, CO  80134


Send an email