Investing in our people, clients, and communities.
DWC CPAs and Advisors provide business consulting, tax, audit, and client accounting services with strategies to help minimize tax exposure and advice to help our clients plan, grow, and be better.
As the largest public accounting and business advisory firm headquartered in western Colorado for more than 75 years, we have built trusted relationships with individuals, businesses, and organizations by delivering insight, strategy, and solutions that go beyond traditional accounting. Our 100+ professionals and staff collaborate across specialties to help clients navigate complex challenges, manage risk, and plan for growth.
Recognized nationally as a Top 300 Public Accounting Firm by INSIDE Public Accounting, we combine deep regional roots with the resources and expertise to serve clients across Colorado and nationwide.
Important Notice: Federal Payments Going Digital
Beginning Sept. 30, 2025, the federal government will stop issuing paper checks for tax refunds and most other payments. Refunds will be issued electronically (direct deposit, prepaid debit cards, or digital wallets).
What you should do:
- File your return as usual—no changes.
- Confirm your bank account details with your tax preparer securely.
- Explore electronic payment options for federal taxes. Watch the IRS video or visit the IRS Payments web page.
Paper payments remain available for now, but transitioning early will make things easier. We expect to receive updated information regarding all electronic payments from the IRS in the next few months.
Our Services
Our purpose is simple—we help our people, clients, and our communities to be better.
Audit
Our audit and review services cover financial statements, procedures, risk assessment, and controls and compliance.
Business Advisory
Our business advisory services are tailored to your unique industry and business to meet your organization’s goals, build success, and help overcome challenges.
Client Accounting Services
DWC provides outsourced Client Accounting Services (CAS) to bolster your current in-house resources, provide full financial and accounting support, and serve as your outsourced CFO.
Tax
It is advantageous to have a team of certified accounting professionals on your side to help assess, evaluate, and minimize your tax exposure on every governmental level.
Specialized Services
We have professionals with expertise in business succession planning, business valuation, cost segregation studies, and forensic accounting, consulting, and litigation support.
DWC Wealth Advisors
DWC Wealth Advisors provide integrated services to leverage and maximize our clients’ overall financial picture now and for the future.
What Our Clients Say
Working with Lisa Thon-Kollar is always a joy. She is kind, soft-spoken and patient. She is knowledgeable and efficient and never seems to be pressured. I am confident of receiving the best advice and direction and have never had an issue with the preparation of our tax forms.
Rachel Schlepp is excellent. My favorite rep since onboarding in 2011.
Trust accounting and tax reporting can be tricky so expert advice and counseling have been truly valued. And, the support staff is so helpful!
DWC CPAs and Advisors is local and consistently provides a very dependable source of financial help and information.
Mark Groves and friends are friendly and always happy to patiently walk me through the things I don’t understand.
Chris Allen, Kevin Rosson and team. High integrity, knowledgeable, and incredibly valuable.
Very knowledgeable, friendly, and accurate with their work.
I have received good counsel in the past in establishing new business entities for tax and estate planning purposes. I have appreciated the personable and professional friendship that exists in our relationship with those we work with.
As a non-resident we are not familiar with the US tax system. It is great to have Mark [Plantz] and the team working with us and ensuring we keep to the straight and narrow path.
The people I have worked with are always very friendly and knowledgeable and understand what I need done or answered. They always explain anything I have questions about very thoroughly.
Thorough, knowledgeable, professional and really nice people.
We have had Sarah handle our affairs for many years and have always been completely satisfied with her work!
DWC Insights
New Rules Could Boost Your R&E Tax Savings in 2025
A major tax change is here for businesses with research and experimental (R&E) expenses. On July 4, 2025, the One Big
Payroll Tax Implications of New Tax Breaks on Tips and Overtime
Before the One Big Beautiful Bill Act (OBBBA), tip income and overtime income were fully taxable for federal income tax
Using Your Nonprofit’s Endowment to Navigate Financial Obstacles
Even not-for-profits that make realistic budgets and hold adequate funds in reserve to cover shortfalls can run into financial emergencies
Stay on Top of Tax Planning Throughout the Year!
DWC is pleased to provide our online Tax Planning Guide to stay abreast of tax planning resources year-round. Explore topics such as tax planning basics, real estate, investing, retirement, estate planning, and more.
The more you know about potential tax law changes and possible tax-reduction strategies, the easier it will be to determine which tax strategies will make sense for you this year, such as the best way to time income and expenses.
