Insights

Longstanding CPA RPB is the oldest registered CPA firm in Wisconsin with a history dating back to 1907, indicating deep local market knowledge and established trust that can be leveraged in relationship-driven selling.

Diverse client focus Serves a wide range of entities including closely held businesses, not-for-profits, employee benefit plans, government agencies, and schools, suggesting cross-sell opportunities across audits, tax, consulting, and ERISA services.

Regulatory readiness Registered with PCAOB and affiliated with AICPA and WICPA, plus specialized audit quality centers, positioning RPB to handle complex audits for benefit plans and government-related engagements that require high compliance standards.

Tech utilization Uses a modern, blended tech stack (QuickBooks, WordPress, WooCommerce, Excel, Teams, among others) that supports scalable client service delivery and potential for expanding cloud-based advisory options.

Mid-market scale Revenue in the $50–$100 million range with 51–200 employees places RPB as a mid-sized firm, presenting a clear path for targeted upsell into higher-value advisory, risk, and technology-enabled services for growing clients.

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Reilly, Penner & Benton, LLP Tech Stack

Reilly, Penner & Benton, LLP uses 8 technology products and services including QuickBooks, WordPress, WooCommerce, and more. Explore Reilly, Penner & Benton, LLP's tech stack below.

Reilly, Penner & Benton, LLP's Email Address Formats

Reilly, Penner & Benton, LLP uses at least 3 email formats:
Reilly, Penner & Benton, LLP Email FormatsExamplePercentage
FLast@rpb.bizJDoe@rpb.biz
54%
First@rpb.bizJohn@rpb.biz
46%
FLast@rpbllp.comJDoe@rpbllp.com
100%

Frequently Asked Questions

What is Reilly, Penner & Benton, LLP's phone number?

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You can contact Reilly, Penner & Benton, 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 Reilly, Penner & Benton, LLP's official website and social media links?

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Reilly, Penner & Benton, LLP's official website is rpb.biz and has social profiles on LinkedIn.

How much revenue does Reilly, Penner & Benton, LLP generate?

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As of September 2026, Reilly, Penner & Benton, LLP's annual revenue is estimated to be $50M - $100M.

What is Reilly, Penner & Benton, LLP's SIC code and NAICS code?

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Reilly, Penner & Benton, 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 Reilly, Penner & Benton, LLP have currently?

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As of September 2026, Reilly, Penner & Benton, LLP has approximately 79 employees across 1 continents, including North America. Key team members include Board Of Trustees: A. W., Manager: E. W. and Senior Tax Accountant: B. T. Explore Reilly, Penner & Benton, LLP's employee directory with LeadIQ.

What industry does Reilly, Penner & Benton, LLP belong to?

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Reilly, Penner & Benton, LLP operates in the Accounting industry.

What technology does Reilly, Penner & Benton, LLP use?

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Reilly, Penner & Benton, LLP's tech stack includes QuickBooks, WordPress, WooCommerce, Microsoft Excel, JSON-LD, Modernizr, Slick and Microsoft Teams.

What is Reilly, Penner & Benton, LLP's email format?

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Reilly, Penner & Benton, LLP's email format typically follows the pattern of FLast@rpb.biz. Find more Reilly, Penner & Benton, LLP email formats with LeadIQ.

When was Reilly, Penner & Benton, LLP founded?

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Reilly, Penner & Benton, LLP was founded in 1907.
Reilly, Penner & Benton, LLP logo

Reilly, Penner & Benton, LLP

AccountingWisconsin, United States51-200 Employees

Reilly, Penner & Benton, LLP (RPB) is a Wisconsin-based accounting firm located at 1233 North Mayfair Road, Suite 302, Milwaukee, WI 53226. It is the oldest registered CPA firm in Wisconsin and has served clients in Southeast and South Central Wisconsin since 1907, focusing on closely held businesses, not-for-profit organizations, employee benefit plans, government and municipal agencies, and charter schools and school districts. RPB provides financial statement audits, reviews and compilations, ERISA audits for employee benefit plans, accounting services, tax return preparation and tax consulting, business valuations, forensic audits, fraud prevention services and other consulting services. The firm has 51-200 employees. RPB maintains affiliations with the American Institute of Certified Public Accountants and the Wisconsin Institute of Certified Public Accountants, and is a member of AICPA's Employee Benefit Plan Audit Quality Center, Government Audit Quality Center, and Private Company Practice Section, in addition to being registered with the Public Company Accounting Oversight Board to perform audits of employee benefit plans with 11-K filing requirements.

Section iconCompany Overview

Phone number
Website
rpb.biz
SIC Code
8721 - Accounting, Auditing, and Bookkeeping Services
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
1907
Employees
51-200

Section iconFunding & Financials

  • $50M - $100M

    Reilly, Penner & Benton, LLP's revenue is estimated to be in the range of $50M - $100M

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