EisnerAmper
EisnerAmper is a New York-headquartered, PE-backed full-service advisory and accounting firm serving enterprise and middle-market clients across 20+ industries with assurance, tax, advisory, outsourcing, and wealth management services, supported by a ~900-person India Global Capacity Centre and proprietary AI audit tooling co-developed with Microsoft.
- Company typePrivate
- Founded1963
- HeadquartersNew York, United States
- Headcount1,001–5,000
- GTM typeB2B
- OfferingServices
What EisnerAmper does
EisnerAmper is a New York-headquartered full-service business advisory and accounting firm organized as an alternative practice structure, with EisnerAmper LLP providing licensed attest services (audit, SOC) and Eisner Advisory Group LLC delivering tax and business consulting. Founded in 1963 and operating as a private, PE-backed firm since TowerBrook Capital Partners' August 2021 investment, the firm reports ~4,700 colleagues and 475+ partners across 15+ U.S. cities plus owned offices in Luxembourg, London, and a ~900-person Global Capacity Centre in India. It is currently ranked the 13th largest U.S. accounting firm (March 2026), with disclosed revenue of $1.2B and a stated target to double to $2.4B over the next 3+ years.
The firm delivers five core service lines — Assurance (audit and SOC services), Tax (federal, international, private client, state and local, controversy), Advisory (AI consulting, risk, strategy and transformation, financial advisory, CFO advisory including a dedicated Energy Sector practice, government advisory, workforce solutions), Outsourcing (finance and accounting, technology and AI, growth and marketing, HR), and Wealth Management (Prosperity sub-brand plus retirement plan administration) — to enterprise and middle-market clients across 20+ industry verticals including financial services, real estate, healthcare, manufacturing, government, technology, cannabis, and restaurants. Underlying technology includes the co-developed EisnerAI Audit Design Agent (built natively on Microsoft Foundry), the EisnerAmper Investor Portal, the Next Gen Fund Solutions Practice, and ecosystem partnerships with Workday, Intuit, and Sage Intacct.
Revenue is generated through engagement-based professional services and recurring managed services (outsourcing, fund administration, wealth management), with pricing not publicly disclosed and proposals submitted via RFP. Distribution is partner-led across the U.S. office network, supplemented by the India GCC, Allinial Global membership, technology partnerships, and inbound RFP/contact channels. The firm's growth engine combines aggressive M&A (15+ acquisitions since 2019), organic partner promotions (record 23 in 2024), institutional capital from the March 2026 TowerBrook/Carlyle AlpInvest/Hamilton Lane continuation vehicle, and geographic and AI-driven product expansion.
EisnerAmper firmographics
Firmographics- Name
- EisnerAmper
- Legal name
- EisnerAmper LLP and Eisner Advisory Group LLC
- Website
- https://eisneramper.com
- Company type
- Private
- Founded year
- 1963
- Operating status
- Operating
- Headcount range
- 1,001–5,000 employees
- Short description
- EisnerAmper is a New York-headquartered, PE-backed full-service advisory and accounting firm serving enterprise and middle-market clients across 20+ industries with assurance, tax, advisory, outsourcing, and wealth management services, supported by a ~900-person India Global Capacity Centre and proprietary AI audit tooling co-developed with Microsoft.
- Ownership category
- akta.pro rank
Where EisnerAmper is headquartered
LocationHeadquarters
- HQ city
- New York
- HQ country
- United States
- HQ region
- North America
Offices16 records
Markets served
EisnerAmper business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Assurance Services: Audit, SOC, and attest services provided by EisnerAmper LLP (licensed independent CPA firm). Includes Financial & Corporate Audit Solutions, SOC Services, and Employee Benefit Plan audits (401K, ERISA, 403(b), Form 11-K). Project-based professional services fees.
- Tax Services: Federal, international, state & local, private client, and tax controversy/dispute resolution services. Includes year-end tax planning webinars, tax guide publications, and NJEDA Agreed-Upon Procedures engagements. Mix of recurring compliance and one-time advisory work.
- Advisory & Consulting: Risk advisory, strategy & transformation, financial advisory (bankruptcy, corporate finance, forensic/litigation/valuation, transactions), CFO advisory, government advisory, AI consulting, and workforce solutions. Project-based and recurring engagement fees.
- Outsourced Finance, Accounting, IT, HR, and Fund Administration: Recurring managed services including outsourced accounting, CFO services, fund accounting/administration, managed IT, cybersecurity, virtual CIO, HR advisory, and growth/marketing services. Most recurring/managed-services stream.
- Wealth Management: Holistic wealth management delivered via Prosperity (an EisnerAmper company) and corporate benefits/retirement plan administration. Recurring asset/fee-based and advisory revenue.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | — | Custom engagement-based pricing for assurance, tax, advisory, and outsourcing services |
Go-to-market motion3 records
Distribution channels5 records
Marketing channels8 records
EisnerAmper product offering
Product offeringCore offering
EisnerAmper is a full-service global business advisory and accounting firm providing assurance (audit and SOC), tax, advisory, and outsourced finance/accounting/IT/HR/fund administration services to enterprises, funds, and high-net-worth individuals across 20+ industries. The firm also delivers wealth management through its Prosperity sub-brand and operates tech-enabled service platforms including the EisnerAI Audit Design Agent built on Microsoft Foundry and the EisnerAmper Investor Portal for fund clients.
Product overview
EisnerAmper operates as a multi-service professional services platform rather than a single unified product, organized around four core service lines — Assurance, Tax, Advisory, and Outsourcing — plus a Wealth Management arm delivered in part through the Prosperity sub-brand. The Assurance line is anchored by Audit Services and SOC Services; Tax covers Federal, International, Private Client, State & Local, and Tax Controversy & Dispute Resolution; Advisory spans AI, Risk Advisory, Strategy & Transformation, Financial Advisory, CFO Advisory (including a dedicated Energy Sector offering), Government Advisory, Workforce & People Solutions, Financial Management & Disbursements, and Settlement Administration; Outsourcing covers Finance & Accounting, Technology & AI (boosted by the Fernway Solutions acquisition), Growth & Marketing (including EA Growth Solutions and MLCworks), HR, and Outsourced Industry Operations. Overlaid on this service portfolio are three standalone technology and practice offerings: the EisnerAI Audit Design Agent (an AI-powered assurance platform built natively on Microsoft Foundry), the EisnerAmper Investor Portal, and the EisnerAmper Fund Solutions Practice that bundles the Portal with CFO/controller and fund accounting services for hedge, PE, and VC clients. Acquired brands (MLCworks, Fernway Solutions) and merged firms (Tidwell Group, Prague & Company, Krost CPAs, HDA Accounting Group, Lurie LLP, Bolotin Financial Group, KLG Business Valuators) plug into these lines as sub-brands and capacity adds.
Differentiator
Problem solved
Functional benefit
Brands
- Prosperity - An EisnerAmper Company: Holistic wealth management offering for successful individuals, owners of closely held businesses, and families, operated as a dedicated sub-brand under the EisnerAmper umbrella.
- Eisner Advisory Group
- EisnerAI Audit Design Agent
- EisnerAmper Investor Portal
Products and services
- Assurance Services (Audit and SOC) Independent assurance services comprising Audit Services and System & Organization Controls (SOC) reporting for public companies, financial institutions, private enterprises, and employee benefit plans. Audit Services covers financial statement audits and integrated audit work; SOC Services delivers SOC 1, SOC 2, SOC 3, and related readiness and attestation engagements.
- Tax Services Multi-disciplinary tax practice covering Federal Tax, International Tax, Private Client services, State & Local Tax, and Tax Controversy & Dispute Resolution. Supports compliance, planning, cross-border structuring, and IRS/state audit defense for individuals and entities.
- Advisory Services Broad advisory portfolio spanning AI Consulting, Risk Advisory, Strategy & Transformation, Financial Advisory (bankruptcy, corporate finance, forensic/litigation/valuation, transactions), CFO Advisory (including a dedicated Energy Sector CFO Advisory practice), Government Advisory, Workforce & People Solutions, Financial Management & Disbursements, and Settlement Administration.
- Outsourcing Services End-to-end outsourced operations across Finance & Accounting, Technology & AI (including NetSuite consulting via Fernway Solutions), Growth & Marketing (including EA Growth Solutions and MLCworks), HR, and Outsourced Industry Operations. Delivered as dedicated managed services engagements.
- Wealth Management Services Wealth Management practice comprising Corporate Benefits Plan advisory, Retirement Plan Administration & Consulting, and the Prosperity sub-brand serving the mass affluent. Combines investment advisory, financial planning, and corporate retirement services for individuals, closely held business owners, and families.
- EisnerAI Audit Design Agent AI-powered assurance platform co-developed with Microsoft and built natively on Microsoft Foundry. Deploys AI agents to modernize audit processes, rapidly synthesize information across systems, identify key patterns, and enhance risk assessment and accuracy for assurance engagements.
- EisnerAmper Investor Portal Digital platform launched February 9, 2026 as part of the Fund Solutions Practice. Provides hedge, PE, and VC fund clients with guided subscription workflows, integrated e-signatures, investor-uploaded support documentation, built-in KYC/AML checks, dashboards, document storage, secure communications, and performance reporting.
- EisnerAmper Fund Solutions Practice Dedicated practice launched February 9, 2026 serving hedge fund, private equity, and venture capital managers with outsourced CFO/controller services, in-house fund accounting, and the EisnerAmper Investor Portal. Operates alongside EisnerAmper Luxembourg S.à r.l. for European fund clients.
- Energy Sector CFO Advisory Dedicated CFO Advisory practice focused on the energy sector, serving oil and gas operators, midstream, downstream, power and utilities, renewables, and alternative energy clients. Led by energy-sector specialists and launched October 30, 2024.
- Prosperity Wealth Management Mass-affluent wealth management sub-brand of EisnerAmper's Wealth Management practice. Bolotin Financial Group combined into Prosperity in September 2025 to scale investment advisory capacity; together managing approximately $4 billion in assets for successful individuals, closely held business owners, and families.
Companies that use EisnerAmper
Customer profileNamed customers10 records
Segments8 records
Ideal customer profiles6 records
EisnerAmper technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration2 records
AI capability10 records
Feature5 records
EisnerAmper partnerships and signals
Strategic signalPartnerships
15 partnerships are on record, tiered flagship, core and minor.
- KLG Business Valuators & Forensic AccountantsflagshipStrategic combination to expand forensic accounting, business valuation, litigation support, and expert witness capabilities. KLG, founded 1980 and headquartered in Melville, NY, was courted by multiple major firms before selecting EisnerAmper. Expected to close May 2026.
- Price, Reuben, and AssociatescoreCalabasas, CA-based advisory firm providing tax and outsourced accounting services to independent restaurants across the U.S., with LA concentration. Adds 60 employees to EisnerAmper and enhances the firm's restaurant advisory practice.
- MicrosoftflagshipCollaboration to create the EisnerAI Audit Design Agent, an AI-powered assurance platform built on Microsoft Foundry, announced March 9, 2026. Designed to modernize audits, improve efficiency, and enhance risk assessment and accuracy.
- WorkdaycoreJoint webinar series and embedded AI features; EisnerAmper and Workday co-hosted webinar on AI reshaping finance functions and ERP transformation for emerging and mid-market organizations. Workday's customer reported a 50% reduction in external audit time.
- MLCworkscoreDigital marketing and growth advisory firm based in Metairie, Louisiana. Adds expertise in strategic planning, brand development, media strategy, digital advertising, and online reputation management.
- IntuitcorePartnering on Intuit Accountant Suite and Intuit Intelligence platforms; EisnerAmper among major firms beta testing AI-native platforms with over 1,100 firms to help scale operations.
- Jack Azagury (Chair of the Board, Eisner Advisory Group)flagshipBackground includes senior leadership roles at Accenture and advisory positions with TowerBrook Capital Partners. Appointed chair of the board of Eisner Advisory Group LLC.
- Fernway SolutionsflagshipAcquisition of San Francisco-based Fernway Solutions (founded 2018) with cross-border expertise. Brought over 40 professionals and offices in San Francisco, Boston, London, and Bangalore to strengthen global advisory services.
- Bolotin Financial GroupminorBoston-based wealth management firm (with Florida offices) focused on healthcare sector clients; joined Prosperity, an EisnerAmper company.
- Prague & CompanycoreMassachusetts-based CPA firm merged with EisnerAmper to expand presence in the New England region and deepen expertise in trusts, estates, foundations, and private equity sectors.
- HDA Accounting GroupminorColorado-based accounting group that combined with EisnerAmper to expand its regional presence.
- Krost CPAsminorPasadena, CA-based firm combined with EisnerAmper.
- Tidwell GroupcoreDecision to merge practices, enhancing capabilities and service offerings. Tidwell Group's Director John Newkirk (now at EisnerAmper) brought affordable housing practice expertise.
- Lurie LLPcoreMinneapolis-based accounting and advisory firm that joined EisnerAmper (closed September 2022). Expanded Midwest presence and strengthened service offerings across various industries.
- Allinial GlobalcoreMember of Allinial Global, an association of legally independent firms; supports EisnerAmper's international reach and global delivery capabilities.
Scale indicators12 records
Recent moves10 records
Expansion highlights7 records
EisnerAmper competitors and assessment
Company assessmentDirect peers
- BDO USA: Top-10 U.S. accounting and advisory firm offering audit, tax, and advisory services to middle-market clients across similar industry verticals. Direct competitor for enterprise assurance, tax, and advisory engagements.
- RSM US: Top-5 U.S. accounting firm with a strong middle-market focus on audit, tax, and consulting services. Closely comparable in scale, PE-backed growth strategy, and industry-vertical specialization.
- Grant Thornton US: Top-6 U.S. accounting firm providing audit, tax, and advisory services with similar industry coverage and PE-style growth ambition. Direct competitor for mid-market and enterprise clients.
- Crowe LLP: Top-10 U.S. public accounting firm with comparable service lines (audit, tax, advisory, consulting) and a similar PE-influenced growth posture. Direct competitor for middle-market and enterprise engagements.
- Baker Tilly US: Top-10 U.S. accounting and advisory firm with parallel industry verticals (financial services, real estate, manufacturing, government) and similar PE-backed M&A growth strategy.
- Wipfli LLP: Top-20 U.S. accounting firm with comparable size, middle-market focus, technology advisory practice, and an active acquisition-driven growth strategy.
- Plante Moran: Top-15 U.S. accounting and business advisory firm serving middle-market companies with comparable industry-specialized service lines and similar partner-led delivery model.
- Marcum LLP: Top-20 U.S. accounting firm (and the result of its own aggressive merger of legacy firms). Comparable in scale, audit/tax/advisory mix, and PE-influenced growth playbook.
- Forvis Mazars US: Top-10 U.S. accounting firm formed via merger with comparable service breadth across audit, tax, advisory, and outsourced services for middle-market clients.
Broad incumbents
- Deloitte US: One of the Big 4 global advisory firms with significantly larger scale and broader service portfolio. Competes with EisnerAmper for large enterprise audit, advisory, and tax engagements but at a different scale and pricing tier.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks5 records
Key highlights7 records
Customer concentration
EisnerAmper social profiles
Digital presenceEisnerAmper compliance and trust
Trust signalCompliance3 records
EisnerAmper financial estimates
Financial estimateRevenue estimate
Valuation estimate
EisnerAmper leadership team
Management profileNumber of profiles
Profiles13 records
EisnerAmper subsidiaries and ownership
Company hierarchySubsidiaries13 records
EisnerAmper funding detail
Funding detailFunding overview
Funding rounds4 records
Investors2 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
EisnerAmper M&A and investment
M&A and investmentM&A16 records
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about EisnerAmper
What does EisnerAmper do?
EisnerAmper is a full-service global business advisory and accounting firm providing assurance (audit and SOC), tax, advisory, and outsourced finance/accounting/IT/HR/fund administration services to enterprises, funds, and high-net-worth individuals across 20+ industries. The firm also delivers wealth management through its Prosperity sub-brand and operates tech-enabled service platforms including the EisnerAI Audit Design Agent built on Microsoft Foundry and the EisnerAmper Investor Portal for fund clients.
Is EisnerAmper a public or private company?
EisnerAmper is a private company. It is classified as private equity controlled and is currently operating.
When was EisnerAmper founded?
EisnerAmper was founded in 1963. It employs 1,001 to 5,000 people.
Where is EisnerAmper based?
EisnerAmper is headquartered in New York, United States, in the North America region.
How does EisnerAmper make money?
Five revenue lines are on record. Assurance Services are the primary driver. The others are tax Services, advisory & Consulting, outsourced Finance, Accounting, IT, HR, and Fund Administration and wealth Management.
Who are EisnerAmper's main competitors?
Direct peers on record are BDO USA, RSM US, Grant Thornton US, Crowe LLP, Baker Tilly US, Wipfli LLP, Plante Moran, Marcum LLP and Forvis Mazars US. Deloitte US is listed as a broad incumbent.
Does EisnerAmper have an API?
No public API is recorded for EisnerAmper.