Grow Your Business with Pride

Allen Street Consulting is owned and operated by business and finance professional Terry Mickelson. His skillset and his talented staff uniquely positions Allen Street Consulting to provide streamlined, effective finance and operations solutions to small businesses and nonprofits.

Let us help grow your business with integrated solutions so you can focus on what you do best. Our staff will work hand in hand with your team to provide personalized service. From timesheets and payroll to taxes and expenses, Allen Street Consulting is big enough to handle all the needs of your small business or nonprofit, but small enough to provide personalized service to your team.

John R. Armstrong, CPA, MBA - Partner

John is a New York State licensed CPA with over 15 years of experience in public accounting and over 25 years in management roles within fortune 500 and closely held businesses. These roles included CFO, VP of business development and other executive management positions. His public accounting experience encompasses assurance, tax and specialty advisory services to a broad range of clients in industries such as service, manufacturing, real estate, construction, and non-for-profit.

Terry Mickelson - Partner

After working for the Internal Revenue Service for ten years, Terry earned his license as an Enrolled Agent, which allows him to practice before all tax authorities. At Allen Street Consulting, Terry is an accomplished consultant who provides effective tax, financial and business solutions to small businesses and nonprofits. By working directly with individual taxpayers on tax law and compliance issues, Terry has earned years of experience and a wealth of understanding on all levels of taxation related to helping individuals, small businesses and nonprofits. Terry is an Advanced Certified QuickBooks ProAdvisor as well as a Certified Enterprise Solutions Advisor. Terry holds a bachelor of arts in music with a minor in mathematics from Northern Arizona State University.

Alexandra Mickelson

Alexandra is a full-time bookkeeper at Allen Street Consulting. A lover of all things technological, she excels at cracking the toughest of QuickBooks challenges. In her free time, she dabbles in lettering, illustration, and makeup artistry. She is a mother to her three cats Corpsegrinder, Mochi, and Fatticus.

Christina Tretter-Herriger

Christina focuses on streamlining payroll processes and compliance for Allen Street clients. She also assists with client tax preparation, business management, and not for profit consultation. In her personal time she rides dressage and hunter horses professionally, and hikes with her three rescue dogs. Christina holds BAs in German, Latin and Religious Studies from Franklin and Marshall College, as well as a JD from Cornell Law School and a Masters of Law and Legal Practice from the Humboldt Universität zu Berlin.

Alexander French

Alex is a bookkeeper and tax preparer at Allen Street Consulting. With a diverse background ranging from nonprofit development to professional baking, he is passionate about the success and sustainability of small businesses and unique organizations. Alex is an Ohio native and graduate of BGSU Firelands. Outside of Allen Street, you can find him digging for records, tinkering with his synthesizers, or admiring his wonderful cats Mascha and Pop Group.

Raisa Dibble

Raisa is a bookkeeper and tax preparer at Allen Street Consulting. She loves working with the community of small businesses and nonprofits in Buffalo. Raisa has a B.S. in Accounting from Houghton College. Outside of Allen Street she enjoys playing board games, cooking, and watching TV. Her favorite board game is Euro Rails (a spin-off of Empire Builder).