Weaver
Independent U.S. accounting and advisory firm with corporate tax depth across energy, financial services, real estate and middle-market industries.
- Highest 2026 tier: Tier III
- National accounting and advisory firm
- Corporate Tax Advisory
Overview
Weaver was founded in 1950 and provides audit, tax and advisory services to public and private companies, financial institutions, government entities and investment organizations. Its roots and sector depth are especially visible in Texas and the broader U.S. energy market.
Tax capabilities include federal, international, state and local, transaction and industry-specific advice. The firm also supports tax provision, credits and incentives, private equity, real estate and complex organizational structures.
Weaver is included in one 2026 Advisory Ranking category. The highest recorded classification is Tier II.
Firm facts
| Legal name | Weaver and Tidwell, L.L.P. |
| Founded | 1950 |
| Firm type | National accounting and advisory firm |
| Principal offices | Houston, Dallas, Fort Worth, Austin, San Antonio, Denver, New York, Los Angeles |
| Primary focus | Corporate, energy and middle-market tax advisory |
| Managing Partner and Chief Executive Officer | John Mackel |
| Highest 2026 Advisory Ranking tier | Tier III |
Principal activities
Corporate tax advisory
Tax planning, structuring, compliance coordination and support for corporate tax departments.
International and transaction tax
Cross-border planning, transaction support, transfer pricing and ownership-structure analysis.
Tax operations and incentives
Tax accounting, provision support, credits, incentives, indirect tax and technology-enabled processes.
Weaver works with clients on assignments that may combine strategy, specialist analysis, implementation support and organizational adoption. The precise scope depends on the mandate, sector, geography and client requirements.
Sector and mandate coverage
Sector coverage
- Corporate and private businesses
- Technology
- Manufacturing
- Financial services
- Real estate
- Consumer markets
Tax and mandate types
- Corporate tax planning
- International tax
- Transaction tax
- Tax accounting and provision
- State and local tax
- Credits and incentives
Market position
Weaver is positioned as a national accounting and advisory firm. Its relevance reflects the depth of its tax specialization, corporate-client orientation, technical delivery model and ability to support complex or recurring tax requirements.
Distinctive focus: Independent national tax advice informed by deep energy, financial-services and Southwest market experience.
Competitive context
Weaver competes with tax-led professional-services firms, independent accounting networks, specialist consultancies and tax-technology platforms. The relevant peer set varies by jurisdiction, client size, tax type and whether the mandate requires strategic advice, compliance execution, specialist documentation or software.
Comparable firms are selected according to overlap in business model, client segment, service coverage, geographic activity and mandate profile. Inclusion does not imply equivalence in scale, ranking or market position.
Leadership
| Person | Current position | Institutional background |
|---|---|---|
| John Mackel | Managing Partner and Chief Executive Officer | Firm leadership and national growth |
Leadership information reflects the public sources reviewed for this profile. View the firm’s website ↗
Corporate and regulatory information
Weaver and Tidwell, L.L.P. is a certified public accounting firm. Audit, tax and advisory services are subject to the professional requirements applicable to the engagement and jurisdiction.
View registered-entity details
| Principal entity | Weaver and Tidwell, L.L.P. |
| Professional status | Certified public accounting firm |
| Headquarters | Houston |
| Primary jurisdiction | United States |
Principal offices
- Houston
- Dallas
- Fort Worth
- Austin
- San Antonio
- Denver
- New York
- Los Angeles
Rankings and recognition
Ranking inclusion is editorially determined. The existence or maintenance of a Wiki profile does not influence ranking eligibility, tier or position.
Related Economy analysis
Selected reporting, research and market analysis from The Economy providing context for the firm’s operating environment:
- Middle-Market Private Equity: Returns, Scale and Manager Selection
- Private Equity Technology Due Diligence in the AI Era
- The Silent Reshuffle of the Advisory Market
- How AI Is Reshaping Retail Due Diligence for Private Equity
- Trade Policy Uncertainty: The Hidden Tax on Foreign Investment
Related institutions and subjects
Sources and data transparency
The profile is based on the following publicly available institutional, regulatory and editorial sources:
- Tax Services — corporate tax, specialty tax or tax-technology capabilities.
- Weaver — firm overview, services and institutional information.
- Advisory Ranking — Top 30 Corporate Tax Advisory 2026 — inclusion and tier classification.
