About Us


We work with you on a personal level to determine the best solutions for your unique needs, then leverage our seasoned expertise to achieve the best possible results.


We are your trusted partner in success. Our firm is large enough to offer a full-range of professional services at a fair price, but small enough to give you the individual attention that you deserve.


Rest assured that when a need arises, our firm is ready and capable to handle everything for you, so you can focus on what matters most to you.

The tax practice now called Tanner and Company was originally started by Murray Scharf in 1947. Bill Tanner took over for Murray and successfully managed the practice with his brother, Steve Tanner, until January 2020. In January 2020, Bill retired and the practice was purchased by Marcus and Adrie Bittner. Over the years, we have completed and successfully filed in excess of 100,000 tax returns. We are looking forward to continuing to provide the excellent service and personal touch that our clients expect and deserve for many years to come.

Steve Tanner has been preparing tax returns in the Denver Metro area for over 40 years.

Marcus Bittner came to Tanner and Company from ACM LLP (formerly known as Anton Collins Mitchell). He is originally from a small town in North Dakota and received his undergraduate degree from North Dakota State University. After a brief career in employee benefits consulting, he decided to pursue his tax education. He graduated with a Master’s in Accounting with a Tax Specialization. He started working for ACM while in graduate school and continued with ACM upon graduation in their Denver office until the opportunity to take over Bill’s thriving practice lured him away from a larger firm.

While at ACM, Marcus specialized in working with small business owners on their S-Corp and Partnership returns along with their individual returns. He has a broad range of business experience and specializes in real estate and manufacturing/distribution companies.