Insights

Comprehensive Service Offering Olsen Thielen & Co. provides a wide range of accounting and consulting services, including valuations, HR and benefits consulting, back-office cloud solutions, succession planning, and forensic accounting. This breadth of expertise suggests opportunities to cross-sell complementary services to existing clients seeking integrated financial and strategic advice.

Industry Diversification Serving diverse industries such as telecommunications, manufacturing, real estate, not-for-profits, and utilities, the company has a broad market footprint. Engaging industry-specific solutions or sector-focused products could enhance client retention and attract new industry leaders looking for tailored financial services.

Strong Regional Presence With over 95 years of local experience and a trusted position in the Upper Midwest, Olsen Thielen’s regional dominance offers an opportunity for sales expansion by emphasizing personalized, local expertise and leveraging their established reputation to attract nearby organizations seeking high-touch financial advising.

Digital and Cloud Adoption The company’s use of cloud-based and digital tools like QuickBooks, Office 365, and Google integrations indicates openness to technology-driven solutions. Exploring advanced financial technology, automation, or cybersecurity services could align well with their existing tech stack and improve operational efficiency for their clients.

Growth and Revenue Potential With a revenue range of $100 million to $250 million and a sizable team, Olsen Thielen has significant growth potential. Opportunities exist to introduce new niche advisory services, enhance existing offerings with innovative financial products, or expand into adjacent markets through strategic partnerships and tailored client solutions.

Olsen Thielen Tech Stack

Olsen Thielen uses 8 technology products and services including WooCommerce, Microsoft 365, Paychex, and more. Explore Olsen Thielen's tech stack below.

  • WooCommerce
    E-commerce
  • Microsoft 365
    Email
  • Paychex
    Human Resource Management System
  • Chart.js
    Javascript Graphics
  • ZoomInfo
    Lead Generation
  • Elementor
    Page Builders
  • Bootstrap
    UI Frameworks
  • CSS
    Web Tools And Plugins

Olsen Thielen's Email Address Formats

Olsen Thielen uses at least 1 format(s):
Olsen Thielen Email FormatsExamplePercentage
FLast@otcpas.comJDoe@otcpas.com
90%
FirstLast@otcpas.comJohnDoe@otcpas.com
7%
First.Last@otcpas.comJohn.Doe@otcpas.com
2%
Last@otcpas.comDoe@otcpas.com
1%

Frequently Asked Questions

Where is Olsen Thielen's headquarters located?

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Olsen Thielen's main headquarters is located at 2675 Long Lake Road St. Paul, Minnesota 55113 United States. The company has employees across 2 continents, including North AmericaEurope.

What is Olsen Thielen's phone number?

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You can contact Olsen Thielen's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Olsen Thielen's official website and social media links?

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Olsen Thielen's official website is otcpas.com and has social profiles on LinkedIn.

What is Olsen Thielen's NAICS code?

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Olsen Thielen's NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does Olsen Thielen have currently?

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As of June 2026, Olsen Thielen has approximately 135 employees across 2 continents, including North AmericaEurope. Key team members include Chief Executive Officer: C. B.Chief People Officer: V. F.Chief Operating Officer: J. W.. Explore Olsen Thielen's employee directory with LeadIQ.

What industry does Olsen Thielen belong to?

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Olsen Thielen operates in the Accounting industry.

What technology does Olsen Thielen use?

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Olsen Thielen's tech stack includes WooCommerceMicrosoft 365PaychexChart.jsZoomInfoElementorBootstrapCSS.

What is Olsen Thielen's email format?

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Olsen Thielen's email format typically follows the pattern of FLast@otcpas.com. Find more Olsen Thielen email formats with LeadIQ.

When was Olsen Thielen founded?

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Olsen Thielen was founded in 1921.

Olsen Thielen

AccountingMinnesota, United States51-200 Employees

Olsen Thielen & Co., Ltd. is a full service accounting and consulting firm, and a “Top 25” Twin Cities firm. We provide high level service and strategic direction to businesses through our traditional accounting and tax services, as well as non-traditional services like:

Valuations
Human Resources consulting
Employee Benefit consulting
Back-office Cloud Accounting Solutions
Estate, gift and succession planning
Fraud and forensic accounting

We offer services that fit the unique needs of many organizations and industries.

Telecommunications
Professional Services
Manufacturing and Distribution
Not-for-profit organizations
Utilities
Real Estate and Construction

Our focus is on helping owners, leaders and management teams fulfill their organization’s goals. We offer a rare combination of experience, specialized skills and principles, and are committed to deliver outstanding service and value to your business.  This philosophy has made Olsen Thielen a trusted adviser to business owners in the Upper Midwest for over 95 years.

Section iconCompany Overview

Headquarters
2675 Long Lake Road St. Paul, Minnesota 55113 United States
Phone number
Website
otcpas.com
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
1921
Employees
51-200

Section iconFunding & Financials

  • $100M$250M

    Olsen Thielen's revenue is estimated to be in the range of $100M$250M

Section iconFunding & Financials

  • $100M$250M

    Olsen Thielen's revenue is estimated to be in the range of $100M$250M

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