What do you need your CPA Firm to be?


Qualified professionals with the experience to advise you strategically


Communicating with you at the speed of today’s business world


Bringing needed expertise to smaller clients with complex concerns


Nuanced and proactive planning to help you achieve maximum tax efficiency


Combining accounting, tax, & advisory services for a holistic approach


Building strong relationships with our clients to better understand their needs

How can we help YOU?

I am a…

Small Business Owner

We know that small business owners want and need guidance.  You don’t have a tax director or CFO in-house, so you rely on your professional advisors to cover your back.  We are readily available to provide ongoing support through the year, whether through periodic accounting reviews, ongoing bookkeeping services, or advisory and planning services.

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I am a…

CFO / Tax Director

Our advanced technical skill makes us uniquely equipped to help mid-sized businesses, either as a full service provider or as a complement to to your larger audit or tax firm.  We can help reduce your costs and alleviate pressure on internal finance resources for greater operational efficiency.

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I am a…

Individual Taxpayer

Let’s be honest: No one likes worrying about taxes.  Therefore, when it comes to individual tax services, our primary goal is to make the process as painless as possible while empowering you with the knowledge to plan appropriately.  We leverage the very best in technology with our signature personal touch to give our clients peace of mind and fewer headaches.

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I am a…

CPA / CPA Firm

We are extremely proud of the unique relationships we have developed with small and large firms alike.  Our unique specialty areas (such as international tax and IRS controversy) give us the ability to consult and accept referrals in areas that many practitioners want to avoid.   We respect our referral partners and strive for relationships that are beneficial for everyone.

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Happy Clients

What We Do

Diverse services for a complex world.

Who We Are

Learn about our roots and what makes us special.


Tax Returns Filed



How We Do It

A unique approach founded on relationships.

Talk To Us

Contact our firm to learn more.


Dedicated Team

Who Do We Work With?

Just a few of the industries we have served...
  • Lanphier LLP has, by far, the best accountants I have worked with as a business owner.  The quality and expertise of their work is top-notch, and most importantly, they are extremely responsive to our needs.

    Don Golden

    President — Precision Sample LLC

  • I have been working with Brittany and Dennis for over six years.  Their accounting and legal practices, working together, have provided me and my companies with quality care and advice since day one.  You will not find a more honest and ethical team of professionals to assist you with accounting and legal advice.  Thanks for all you have done for me and I look forward to many more years working with you both.  

    Toby Terhune

    President — Shadow Creek Homes, LLC

  • We have personally worked with the Lanphiers for more than 7+ years and Brittany, Dennis, and the entire Lanphier team have been an absolute pleasure to work with.  We could not have built our various internet companies without their expertise and diligence on our accounting, bookkeeping, and tax planning.

    Matt Frary

    CEO/Founder — SmarterChaos.com LLC

  • What a great resource to have the Lanphiers' international tax expertise to help me get it right for my clients and give me peace of mind.  A huge "thank you" to Brittany and Dennis for helping me deliver outstanding service to my clients and for your willingness to work "round the clock" to make it happen.

    Rob Eggett, CPA

    CPA Firm Owner

Find Us On

Lanphier LLP

2000 S. Colorado Blvd., Tower 1, Suite 10800

Denver, CO 80222