CASC

Our Services

Comprehensive solutions for your business

Accounting record-keeping and compliance with clients’ tax obligations.
Tax advisory services.
Custom design and implementation of cost accounting systems.
Administrative filings with Mexico’s Tax Administration Service (SAT) and local tax authorities.
Net worth statements; support for international investors.

Due diligence for the acquisition of companies.
Support during negotiations for the sale or acquisition of companies.
Assessment of information systems and internal control.
Capital raising support for companies.
Advisors and statutory auditors (comisarios) to various companies, based on corporate governance and accounting best practices.
Legal representation in testamentary probate proceedings.
Advisory and support for company incorporation and structuring.
Analysis and advice on selecting the most suitable corporate form.
Drafting of corporate purpose and bylaws.
Document management and filing with a Notary Public.
Support during execution/signing of the articles of incorporation.
Registration with the SAT and onboarding of tax obligations.

Our Alliances

Global audit, tax, and accounting network

Audit & Assurance
Tax & Legal Services
Accounting & BPO
Global presence in 30+ countries

Multidisciplinary strategic consulting firm

Business Intelligence
People Solutions
Investment Banking
Accounting & BPO

Our mantra:
Be your most trusted asset

About Us

OUR MISSION

Deliver high-quality services, grounded in our experience, that benefit our clients by pursuing innovative solutions that enable their development and growth.

VISION

To be a public accounting firm that meets our clients’ accounting, tax, and administrative advisory needs within the globalization of international trade.

VALUES

The values of Calleja, Antúnez y Asociados, S.C. are grounded in honesty and trust with our clients, our team, and the accounting profession.

Provide full dedication, professional experience, and business advisory services for the benefit of our clients.

Fulfill our social responsibility by dedicating time, effort, and resources to strengthening the profession and the country.

Offer each team member ample opportunities for progress so that, through their effort and drive for improvement, they can achieve professional, financial, and personal fulfillment. Our retention over time speaks for itself.

HISTORY

The firm was founded in 1993 through the partnership of certified public accountants Enrique Calleja Pinedo and Juan Alfredo Antúnez Sin.

In 1995, C.P.C. Conchita Pastrana joined as an associate through her firm Pastrana Rodríguez y Asociados, S.C.

Since 2021, both firms have been members of ALTAC INTERNATIONAL.

Founding Partners

Partner C.P.C. Enrique Calleja Pinedo

Certified Public Accountant (C.P.C.), graduate of Universidad Iberoamericana, with a Master's in Business Administration from Instituto Tecnológico de México.

He worked in the tax practice of Price Waterhouse (now PricewaterhouseCoopers) and served as Corporate Tax Manager at Química Hoechst de México.

He was an adjunct professor at Universidad Iberoamericana and Universidad Intercontinental, respectively.

Member of the Instituto Mexicano de Contadores Públicos (IMCP), the Colegio de Contadores Públicos de México, and the Instituto Mexicano de Ejecutivos de Finanzas (IMEF).

He served on the IMCP Commission for the Analysis and Dissemination of Financial Reporting Standards (formerly the Commission on Generally Accepted Accounting Principles) and on the IMEF National Financial Information Committee, which he chaired from 2004 to 2007. He also served on the Technical Advisory Council of the Consejo Mexicano Emisor de Normas de Información Financiera (CINIF) from 2010 to 2013.

He is currently authorized by the following agencies to issue statutory audit reports: the Administración General de Auditoría Fiscal Federal and the Instituto del Fondo Nacional de la Vivienda para los Trabajadores.

Partner leading the Audit practice C.P.C. Juan Alfredo Antúnez Sin

Certified Public Accountant (C.P.C.), graduate of Instituto Tecnológico Autónomo de México. He holds a specialization in Tax Law from Universidad Panamericana and postgraduate studies in Foreign Trade and Taxation at Instituto Tecnológico Autónomo de México.

He worked at KPMG in the tax practice at its Mexico City office.

Member of the Instituto Mexicano de Contadores Públicos and the Colegio de Contadores Públicos de México.

He was an active member of the IMEF National Financial Information Committee, serving as Vice President for the 2008–2009 term.

He is currently authorized by the following agencies to issue statutory audit reports: the Administración General de Auditoría Fiscal Federal, the Instituto del Fondo Nacional de la Vivienda para los Trabajadores, the Instituto Mexicano del Seguro Social, and the Treasury of the Government of the Federal District.

Partner C.P.C. Concepción Pastrana Rodríguez

Certified Public Accountant (IMCP certified), graduate of Universidad Cristóbal Colón with honors, with a Master's in Taxation from the Instituto de Especialización para Ejecutivos. Her thesis was titled “Corporate spin-offs as a tool to address the issue of a legacy of property not owned by the testator in the case of real estate within a testamentary succession.”

She has worked in the construction sector, managing both residential and commercial projects in several cities.

She has studies in Finance and Tax and Corporate Law. She has carried out investment project evaluations, primarily in the hospitality sector.

She currently serves as Statutory Auditor (Comisario) and Board Member for various companies in Mexico.

She is authorized to issue statutory audit reports for: the Administración General de Auditoría Fiscal Federal and the Secretaría de Finanzas y Planeación del Estado de Veracruz.