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Schmidt & Schmidt, Ltd. to Join Olsen Thielen CPAs and Advisors

March 3, 2023

We are excited to announce that Schmidt & Schmidt, Ltd, has joined Olsen Thielen CPAs and Advisors, effective January 1, 2023. Both Twin Cities-based CPA firms have an established reputation across the country and share a strong emphasis on personalized client service and key industry expertise.

Olsen Thielen Named a Regional Leader

March 31, 2022

Olsen Thielen has been named a "Regional Leader" on Accounting Today's list of "Top Firms in the Midwest" for 2022. OT ranks as one of the top-performing CPA firms with under 100 employees as well.

Kelly M. Salwei, CPA, CMA, to Retire August 31

December 1, 2021

Kelly joined Olsen Thielen in 1985, after six years with a CPA firm in northern Minnesota. We thank Kelly for his leadership in our Eden Prairie office and offer him our best wishes as he transitions to his new role as a retiree.

City of Roseville Congratulates Olsen Thielen on 100th Anniversary

August 3, 2021

An anniversary celebration is often an exercise in internal reflection. For Roseville-based Olsen Thielen & Co., LTD, celebrating its 100th anniversary later this fall is more about those external entities who have made its century of existence possible.

Five Key Points About Bonus Depreciation

August 1, 2021

Like most business owners, you’ve probably heard about 100% bonus depreciation. It’s available for a wide range of qualifying asset purchases. But there are many important details to keep straight. Here are five key points about this powerful tax-saving tool.

Olsen Thielen Celebrates 100 Years

March 9, 2021

Nearly 100 years ago, Olsen Thielen was founded on the belief that personal attention, trust, and quality service were the key elements to helping our clients succeed, and that commitment remains. commitment to their clients and their community.

Happy Holidays from Olsen Thielen

December 15, 2020

VIDEO: Here at Olsen Thielen, we wish you Happy Holidays and we are excited to welcome 2021 as we get ready to celebrate our 100-year anniversary!

Linda M. Nelson to Retire December 31, 2020

December 14, 2020

After a long and remarkable career, Linda Nelson has decided that effective December 31, 2020, she will be retiring from Olsen Thielen. We want to thank Linda for her knowledge, dedication, and everything she did for clients and colleagues.

Magen Koepp Named to Top Women in Finance 2020

December 10, 2020

We are pleased to congratulate Olsen Thielen's principal, Magen Koepp, for being named a Top Women in Finance 2020 Honoree. Finance & Commerce has honored Minnesota’s Top Women in Finance each year since 2001.

Adam P. Thielen Elected Principal

October 8, 2020

We are pleased to announce that Adam P. Thielen, CPA, was elected Principal, effective September 1, 2020.

We’re Going Green!

February 1, 2020

Olsen Thielen continues to take significant steps toward "Going Green", which includes paperless audit and tax returns.

Andrew Janneke to Retire

December 10, 2019

After 40 years at Olsen Thielen, Andy Janneke is transitioning his responsibilities and will be retiring in December 2019.

New Principals Elected

October 8, 2019

We are pleased to announce Matthew J. Klein and Nathaniel L. Nelson have been elected Principals of the firm, effective September 1, 2019. With their election, Olsen Thielen now has 21 Principals and over 86 staff.

Remembering Robert J. Olsen

April 11, 2019

With great sadness we announce the passing of a Robert J. Olsen on March 13th. Bob was a terrific business leader, mentor, husband, and father. Bob and Reynold Thielen took the reins of the firm in 1957 and led it through a period of tremendous growth.

Magen M. Koepp Elected Principal

September 4, 2018

Olsen Thielen is pleased to announce Magen M. Koepp was elected Principal of the firm, effective September 1, 2018. Magen is an Employee Benefit Plan Specialist and has ten years of experience in accounting, auditing and consulting.