Insights

Growth through partnerships Ketel Thorstenson has recently elevated partners, indicating a growth-focused leadership and opportunity to discuss expanded advisory services, cross-selling across construction, hospitality, agriculture, government, and nonprofit sectors, and potential strategic alliance opportunities.

Mid-sized firm leverage With 51-200 employees and revenue in the 100M to 250M range, KTLP sits in a sweet spot for scalable accounting and advisory solutions, offering mid-market services such as outsourced finance, ERP optimization, and internal control improvements to similar firms and closely held businesses.

Geographic expansion Offices in Rapid City, Spearfish, Gillette, and Casper suggest opportunities to target cross-border clients and regional industries, including construction, hospitality, and agriculture, with tailored state-specific compliance and tax planning services.

Industry specialization KTLP’s emphasis on construction, hospitality, agriculture, estate planning, government, and nonprofit sectors presents openings for niche service packages, recurring advisory work, and industry-focused training or outsourcing of payroll, audit, and tax functions.

Digital and tech readiness Using QuickBooks, WordPress, Microsoft 365, and marketing tools indicates a tech-friendly posture; this supports upsell of cloud-based accounting, ERP integrations, data analytics, and cybersecurity/compliance offerings to protect and optimize client financial ecosystems.

Similar companies to Ketel Thorstenson, LLP

Ketel Thorstenson, LLP Tech Stack

Ketel Thorstenson, LLP uses 8 technology products and services including QuickBooks, Linkedin Insight Tag, Matomo, and more. Explore Ketel Thorstenson, LLP's tech stack below.

Media & News

Ketel Thorstenson, LLP's Email Address Formats

Ketel Thorstenson, LLP uses at least 4 email formats:
Ketel Thorstenson, LLP Email FormatsExamplePercentage
First.Last@ktllp.comJohn.Doe@ktllp.com
44%
First@ktllp.comJohn@ktllp.com
37%
FirstL@ktllp.comJohnD@ktllp.com
15%
Last@ktllp.comDoe@ktllp.com
4%

Frequently Asked Questions

What is Ketel Thorstenson, LLP's phone number?

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You can contact Ketel Thorstenson, LLP'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 Ketel Thorstenson, LLP's official website and social media links?

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Ketel Thorstenson, LLP's official website is www.ktllp.cpa and has social profiles on LinkedIn.

How much revenue does Ketel Thorstenson, LLP generate?

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As of August 2026, Ketel Thorstenson, LLP's annual revenue is estimated to be $100M - $250M.

What is Ketel Thorstenson, LLP's SIC code and NAICS code?

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Ketel Thorstenson, LLP's SIC code is 8721 - Accounting, Auditing, and Bookkeeping Services and NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does Ketel Thorstenson, LLP have currently?

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As of August 2026, Ketel Thorstenson, LLP has approximately 138 employees across 2 continents, including North America and Europe. Key team members include Owner: D. H., Partner: P. F. and Director: M. F. Explore Ketel Thorstenson, LLP's employee directory with LeadIQ.

What industry does Ketel Thorstenson, LLP belong to?

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Ketel Thorstenson, LLP operates in the Accounting industry.

What technology does Ketel Thorstenson, LLP use?

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Ketel Thorstenson, LLP's tech stack includes QuickBooks, Linkedin Insight Tag, Matomo, Adobe Creative Cloud, WordPress, Shopify, Microsoft 365 and Constant Contact.

What is Ketel Thorstenson, LLP's email format?

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Ketel Thorstenson, LLP's email format typically follows the pattern of First.Last@ktllp.com. Find more Ketel Thorstenson, LLP email formats with LeadIQ.

When was Ketel Thorstenson, LLP founded?

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Ketel Thorstenson, LLP was founded in 1936.
Ketel Thorstenson, LLP logo

Ketel Thorstenson, LLP

AccountingSouth Dakota, United States51-200 Employees

Ketel Thorstenson, LLP is a mid-sized accounting firm with a history dating back to 1936, providing a full range of accounting and advisory services. It operates from offices in Rapid City and Spearfish, South Dakota, as well as Gillette and Casper, Wyoming. The firm concentrates on several sectors, including construction, hospitality, agriculture, estate planning, government, and nonprofit organizations. Based in Rapid City, the firm serves clients across these industries through its regional offices. In January 2024, the firm announced the appointment of two new partners, Carrie Christensen and Brady Larsen, effective January 1, 2024. The organization maintains a sizable professional staff across its SD and WY offices, reflecting its regional footprint.

Section iconCompany Overview

Phone number
SIC Code
8721 - Accounting, Auditing, and Bookkeeping Services
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
1936
Employees
51-200

Section iconFunding & Financials

  • $100M - $250M

    Ketel Thorstenson, LLP's revenue is estimated to be in the range of $100M - $250M

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