Clark Nuber
Clark Nuber PS is a Bellevue, Washington-based CPA firm providing audit, tax, advisory, and software consulting services to not-for-profits, private businesses, and high net worth individuals across the US. Ranked No. 86 on IPA's 2026 Top 500 with 70+ years of operating history.
- Company typePrivate
- Founded1950
- HeadquartersBellevue, United States
- Headcount251–500
- GTM typeB2B
- OfferingServices
What Clark Nuber does
Clark Nuber PS is a privately held CPA and consulting firm headquartered in Bellevue, Washington, founded approximately 1950, providing accounting, tax, advisory, and audit services to clients across the United States and internationally. The firm operates through four primary service lines: Audit & Assurance (including Single Audits, HUD audits, and employee benefit plan audits), Tax Services (federal, state, local, multistate, international compliance, and wealth transfer planning), Advisory Services (M&A support, fraud and forensics, IT services, family business consulting, and outsourced accounting), and Software Solutions & Training. Client-facing digital infrastructure includes a Client Portal powered by Smartsheet for secure document collaboration and an online payment system via Aiwyn.
The firm operates a single-office model from its Bellevue headquarters, serving three primary customer segments: not-for-profit organizations and government entities (the primary segment), privately held businesses and family enterprises, and high net worth individuals. A separately branded subsidiary, CN Wealth Management, provides registered investment advisory services. The firm holds B Corp certification and ranks No. 86 on INSIDE Public Accounting's 2026 IPA 500 list of the largest US accounting firms, a position it has maintained for nine consecutive years.
Clark Nuber's revenue model is based on professional services fees structured per engagement, with new client acquisition driven by direct engagement and an RFP process. The firm employs between 251 and 500 professionals, including shareholders, principals, and senior managers with credentials including CPA, CMA, CFE, CIA, and JD/LLM in Taxation. Notable visible engagements include a forensic evaluation for the King County Regional Homelessness Authority that identified $8 million in accounting gaps, and tax services for The Hotel Group in the hospitality industry. The firm differentiates through sector specialization in not-for-profit compliance, senior living, healthcare, and Washington state tax law rather than through technology or scale advantages.
Clark Nuber firmographics
Firmographics- Name
- Clark Nuber
- Legal name
- Clark Nuber, PS
- Website
- https://clarknuber.com
- Company type
- Private
- Founded year
- 1950
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- Clark Nuber PS is a Bellevue, Washington-based CPA firm providing audit, tax, advisory, and software consulting services to not-for-profits, private businesses, and high net worth individuals across the US. Ranked No. 86 on IPA's 2026 Top 500 with 70+ years of operating history.
- Ownership category
- akta.pro rank
Where Clark Nuber is headquartered
LocationHeadquarters
- HQ city
- Bellevue
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Clark Nuber business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Audit & Assurance Services: Audit, review, examination and compilation services for not-for-profit organizations, healthcare entities, private companies, and government contractors including Single Audits and HUD compliance audits.
- Tax Services: Tax compliance, planning, and controversy services including federal, state and local tax, international compliance, and wealth transfer/estate planning.
- Advisory Services: Consulting services including merger and acquisition support, fraud and forensics, IT services, family business consulting, and operational reviews.
- Software Solutions & Training: Technology consulting and training services for accounting software solutions.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Professional services engagement - pricing based on scope and complexity |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels5 records
Clark Nuber product offering
Product offeringCore offering
Clark Nuber is a CPA-led professional services firm providing audit and assurance, tax, and advisory services to privately held companies, family businesses, not-for-profits, government entities, and high-net-worth individuals. Its services include specialized audits, tax compliance and planning, fraud and forensics, M&A support, outsourced accounting, software consulting, and training, with CN Wealth Management offered as a separate investment-advisory brand.
Product overview
Clark Nuber PS is a CPA firm providing accounting and consulting services through four primary service lines: Advisory Services (including business consulting, IT services, M&A, and software solutions), Tax Services (state/local/multistate tax, international tax, IRS controversy), and Audit & Assurance Services (financial audits, Single Audits, retirement plan audits). The firm also operates CN Wealth Management as a separate registered investment advisory brand. Client-facing digital tools include a secure Client Portal powered by Smartsheet for document collaboration, and an online payment system via Aiwyn. Services are delivered to clients across diverse industries including not-for-profits, government entities, high net worth individuals, private businesses, healthcare, senior living, real estate, and technology sectors.
Differentiator
Problem solved
Functional benefit
Products and services
- Advisory Services Strategic consulting services for businesses, family businesses, and organizations, covering business advisory, fraud and forensics, IT services, mergers and acquisitions, outsourced accounting and bookkeeping, quality-of-earnings reports, and software solutions and training.
- Tax Services Tax planning, compliance, and consulting services covering state, local, and multistate tax; international compliance and consulting; IRS audits and controversies; general tax compliance and planning; and wealth transfer and estate planning.
- Audit & Assurance Services Audit, review, examination, and compilation services for organizations and companies, including Single Audits, HUD audits, employee benefit plan audits, retirement plan audits, and federal grant and contract consulting.
- Software Solutions and Training Technology consulting and training services for accounting software solutions, provided to businesses and organizations using accounting software.
- CN Wealth Management Investment advisory services offered as a separate brand and registered with the Securities Division of the Washington State Department of Financial Institutions.
Quantifiable outcome
- Improved IPA ranking from No. 88 to No. 86 in 2026
- +1 more outcomes
Companies that use Clark Nuber
Customer profileNamed customers1 record
Segments3 records
Ideal customer profiles4 records
Clark Nuber technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration2 records
Clark Nuber partnerships and signals
Strategic signalScale indicators3 records
Recent moves6 records
Expansion highlights6 records
Clark Nuber competitors and assessment
Company assessmentMarket position
Weaknesses4 records
Competitive moat5 records
Customer concentration
Clark Nuber social profiles
Digital presenceClark Nuber compliance and trust
Trust signalCompliance2 records
Clark Nuber financial estimates
Financial estimateRevenue estimate
Valuation estimate
Clark Nuber leadership team
Management profileNumber of profiles
Profiles20 records
Clark Nuber funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Clark Nuber M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Clark Nuber
What does Clark Nuber do?
Clark Nuber is a CPA-led professional services firm providing audit and assurance, tax, and advisory services to privately held companies, family businesses, not-for-profits, government entities, and high-net-worth individuals. Its services include specialized audits, tax compliance and planning, fraud and forensics, M&A support, outsourced accounting, software consulting, and training, with CN Wealth Management offered as a separate investment-advisory brand.
Is Clark Nuber a public or private company?
Clark Nuber is a private company. It is classified as management employee owned and is currently operating.
When was Clark Nuber founded?
Clark Nuber was founded in 1950. It employs 251 to 500 people.
Where is Clark Nuber based?
Clark Nuber is headquartered in Bellevue, United States, in the North America region.
How does Clark Nuber make money?
Four revenue lines are on record. Audit & Assurance Services are the primary driver. The others are tax Services, advisory Services and software Solutions & Training.
Does Clark Nuber have an API?
No public API is recorded for Clark Nuber.