Doeren Mayhew

What Doeren Mayhew does

Doeren Mayhew & Co., P.C. is a Troy, Michigan-based CPA and advisory firm founded in 1932 that provides audit, tax, advisory, and outsourcing services to middle-market businesses, credit unions, financial institutions, and private family offices. The firm operates across 23 U.S. offices with nearly 1,000 professionals and reported revenue exceeding $170 million, ranking No. 47 on Accounting Today's 2025 Top 100 list. Its client base spans more than 20 industry verticals, with particular depth in credit unions (ranked No. 1 auditing firm by Callahan & Associates), construction and real estate, manufacturing and distribution, health care, private equity, and private family offices. The firm employs an alternative practice structure separating attest services (Doeren Mayhew Assurance) from advisory and tax consulting (Doeren Mayhew Advisors, LLC).

The firm's service portfolio is organized into four pillars: Assurance (audit, employee benefit plan audits, SOC reporting), Tax (business, individual, international, estate, credits and incentives), Advisory (CFO advisory, M&A, investment banking, valuation, ESOP, cybersecurity, digital transformation, transaction advisory), and Outsourcing (payroll, HR, managed technology, retirement plan administration). Proprietary technology assets include the DM Payroll Solutions platform and the GOLoan SBA loan review tool. Following the 2026 acquisition of GRIFFIN Global Technologies, the firm added software development, AI automation, data analytics, and technology consulting capabilities delivered through a hybrid-shore model combining U.S.-based developers with offshore resources; the parallel acquisition of Impact Technology Group brought managed IT services in-house.

Since August 2024, when Audax Private Equity invested in the firm, Doeren Mayhew has pursued an aggressive roll-up strategy, completing 13 acquisitions in 2025 and entering New York (via 1RDG) and Alabama (via Dent Moses), while expanding in Florida, Georgia, and Tennessee. The firm is an independent member of the Moore North America (MNA) Association, a regional member of Moore Global Network, providing limited international reach. Revenue is generated entirely from quote-based professional services fees across multi-year client engagements.

Name

Doeren Mayhew

Legal name

Doeren Mayhew & Co., P.C.

Website

https://doeren.com

Company type

Private

Founded year

1932

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Doeren Mayhew is a Troy, Michigan-based CPA and advisory firm with nearly 1,000 professionals across 23 U.S. offices, providing audit, tax, advisory, and outsourcing services to middle-market businesses, credit unions, and private family offices. Reported revenue exceeds $170 million.

Ownership category

akta.pro rank

Product category

Accounting and Advisory Services

NAICS

Offices of Certified Public Accountants (541211)

SIC

Finance Services (6199)

akta.pro primary industry

Treasury Operations Support (Cash Management, Bank Reconciliations, Payments Ops) (BPAAAGAH)

akta.pro secondary industry

Real Estate Transaction Advisory & Due Diligence (FSAEAJAJ)

Keywords

• Audit and assurance
• Tax advisory services
• Business valuation
• Outsourced accounting
• Credit union auditing

Headquarters

HQ city

Troy

HQ country

United States

HQ region

North America

Offices13 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Audit & Assurance Services: Traditional audit and assurance services including financial statement audits, employee benefit plan audits, and SOC reporting for businesses and financial institutions
2. Tax Services: Business tax, individual tax, international tax, estate tax planning, tax credits and incentives, and cost segregation studies
3. Advisory Services: CEO Advantage, CFO Advisory, Cybersecurity & IT Advisory, Digital Transformation, ESOP Advisory, Investment Banking, M&A Advisory, Transaction Advisory, Valuation Advisory, Litigation Support, Real Estate Advisory
4. Outsourcing Services: Outsourced accounting, HR advisory, insurance, payroll and workforce management, recruitment services, retirement plan administration, and managed technology solutions

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels7 records

Core offering

Doeren Mayhew is a top-100 U.S. CPA and advisory firm that delivers Assurance (audit, employee benefit plan audits, SOC reporting), Tax (business, individual, international, estate), Advisory (CFO advisory, M&A advisory, valuation, ESOP, investment banking, cybersecurity, digital transformation), and Outsourcing (payroll, HR, managed technology, outsourced accounting) services. The firm primarily serves middle-market privately held businesses, credit unions, financial institutions, private equity firms, and high-net-worth family offices across multiple industries.

Product overview

Doeren Mayhew is a top 100 CPA firm offering a comprehensive suite of assurance, tax, and advisory services. The firm operates as an integrated platform combining core services (Assurance, Advisory, Outsourcing, Tax) with specialized sub-services including Valuation Advisory, Litigation Support, SBA Lender Services, and Managed Technology Solutions. The firm has expanded through strategic acquisitions, adding proprietary technology platforms including GRIFFIN Global Technologies (software development, AI automation, data analytics), DM Payroll Solutions (payroll platform), and GOLoan (SBA loan review tool), as well as acquired CPA firms like Impact Technology Group (managed IT services), Dent Moses LLP, 1RDG, and Gerald Stinnett CPA.

Differentiator

Problem solved

Functional benefit

Products and services

• Assurance Services Audit, review, and attestation services including financial statement audits, employee benefit plan audits, and SOC reporting for businesses, credit unions, and financial institutions.
• Tax Services Tax planning and compliance for businesses and individuals, including international tax, estate tax planning, cost segregation studies, and tax credits & incentives.
• Advisory Services Strategic advisory including CEO Advantage, CFO Advisory, M&A advisory, valuation, ESOP advisory, investment banking, cybersecurity/IT, digital transformation, transaction advisory, and litigation support for business owners and management teams.
• Outsourcing Services Back-office managed services including outsourced accounting, HR advisory, insurance, payroll and workforce management, recruitment, retirement plan administration, and managed technology solutions.
• DM Payroll Solutions Proprietary payroll and workforce management platform serving Doeren Mayhew clients with payroll processing and related HR capabilities.
• GOLoan (SBA Loan Review Tool)

Quantifiable outcome

• Over $170 million in revenue
• +4 more outcomes

Named customers2 records

Segments10 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Moore North America, Inc. (MNA)coreOthersDoeren Mayhew is an independent member firm of Moore North America, Inc. (MNA) Association, which is itself a regional member of Moore Global Network Limited (MGNL). This affiliation provides access to global accounting resources and international reach while maintaining independent operations.
• GRIFFIN Global TechnologiescoreTechnology or IntegrationAcquired Atlanta-based GRIFFIN Global Technologies, a software development, AI automation, data analytics and technology consulting firm. GRIFFIN continues to operate under its existing name with founder Matt Turner and CEO Dan Hoover remaining in place. The acquisition strengthens Doeren Mayhew's digital transformation and AI capabilities.
• Impact Technology Group LLCcoreTechnology or IntegrationAcquired Impact Technology Group LLC as an affiliate of Dent Moses acquisition. Impact Technology provides managed IT services, enhancing Doeren Mayhew's technology services platform. The company continues under its established name with the designation 'A Doeren Mayhew Company.'
• NASBAminorOthersDoeren Mayhew is registered with the National Association of State Boards of Accountancy (NASBA) as a sponsor of continuing professional education on the National Registry of CPE Sponsors, enabling the firm to offer CPE credits at its conferences.

Scale indicators14 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Rehmann: Michigan-based CPA and advisory firm with similar Midwest concentration, comparable service mix (audit, tax, advisory, outsourcing), and overlapping client segments including financial institutions and family offices.
• Plante Moran: Largest U.S.-based accounting and advisory firm outside the Big 4, also headquartered in Michigan (Southfield). Direct competitor across audit, tax, advisory, and outsourced accounting for middle-market and PE-backed clients with comparable vertical specialization.
• Eide Bailly: Top 20 U.S. CPA and business advisory firm with similar full-service audit, tax, advisory, and outsourcing mix. Overlapping geographic footprint in the Midwest and Southeast with comparable PE-driven growth posture.
• Wipfli: Top 20 U.S. accounting firm providing audit, tax, advisory, and technology services to middle-market clients. Closely comparable in size, geographic distribution, and industry-vertical focus including financial institutions and construction.
• CliftonLarsonAllen (CLA): Top 10 U.S. accounting firm with strong audit, tax, advisory, and outsourced accounting services. Direct competitor for middle-market and PE-backed engagements with comparable professional headcount range.
• Baker Tilly US: Top 15 U.S. accounting and advisory firm with strong Midwest presence and full-service audit, tax, advisory, and consulting offerings. Closely comparable in size, service mix, and PE-backed middle-market client focus.
• Marcum LLP: Top 20 U.S. accounting and advisory firm with strong audit, tax, and advisory practices. Comparable size and middle-market PE-backed client base, with overlapping construction, healthcare, and manufacturing specializations.
• Crowe LLP: Top 10 U.S. public accounting and consulting firm with deep audit, tax, advisory, and technology consulting capabilities. Comparable in offering breadth and middle-market PE/credit-union exposure, though larger in scale.

Broad incumbents

• BDO USA: Top 10 global accounting network's U.S. member firm offering audit, tax, advisory, and consulting. Larger and broader in scope than Doeren Mayhew, but competes for the same middle-market and PE-backed client wallet share.
• Grant Thornton US: Top 6 U.S. audit, tax, and advisory firm with national footprint and broader capabilities. Competes for larger middle-market engagements and serves as the natural 'next step up' for clients outgrowing Doeren Mayhew's scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/doerenmayhew
• Facebookfacebook.com/doerenmayhewcpa
• LinkedInlinkedin.com/company/doeren-mayhew

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A11 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Doeren Mayhew