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Olsen Thielen & Co., Ltd. does more than just accounting and taxes. We are a full service accounting and consulting firm, and a “Top 25” firm in Minneapolis and St. Paul, Minnesota. We focus on providing top quality solutions for our clients through our traditional accounting and tax services, as well as non-traditional services like valuations, human resource and employee benefits consulting, back-office cloud accounting solutions, estate, gift and succession planning, and fraud and forensic accounting.

Olsen Thielen serves commercial and not-for-profit organizations, manufacturing firms, utilities, cooperatives, professional service firms, wholesalers, retailers, and public companies in many industries.

Olsen Thielen offers a rare combination of experience, specialized skills and principles. We believe our job is to anticipate your needs and provide innovative and proactive answers and solutions, and we are committed to deliver outstanding service and value to your unique business.

This philosophy has made Olsen Thielen a trusted adviser to business owners in the Upper Midwest for 95 years.

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    Integrity Medicolegal Client Story

    "They took the time to understand our business. They listened to my questions, and could answer them simply and clearly. They cared about our success,” says Trish Perkins, Owner and CIO of Integrity Medicolegal. Learn how Olsen Thielen helped Integrity re-affirm their commitment to security and processing integrity by conducting a SOC audit. Read More...

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