"AJSH & Co LLP"    is now    "Mercurius & Associates LLP" "AJSH & Co LLP"    is now    "Mercurius & Associates LLP" "AJSH & Co LLP"    is now    "Mercurius & Associates LLP"

Who we are


Award Wining Company

15+ Years of Experience

Mercurius: Driving Excellence. Delivering Growth

Established in 2008, Mercurius & Associates LLP, formerly known as AJSH & Co LLP, is a distinguished chartered accountancy firm nurtured by a dedicated team of over 300 seasoned professionals. Our commitment to trust and expertise is underscored by registrations with the Institute of Chartered Accountants of India (ICAI), the Public Company Accounting Oversight Board (PCAOB) in the United States of America, and the Canadian Public Accountability Board (CPAB) in Canada.

Guided by the ethos of "Driving Excellence. Delivering Growth," we aspire to be a trusted partner for businesses on their growth trajectory. As a people-centric organization, our solutions focus on enhancing efficiency and performance, embodying a culture of integrity, inclusion, and an unyielding drive for innovation.


imagesOur team is backed by experienced chartered accountants, financial advisors and tax consultants aiming to render quality professional services to clients across India and abroad. We cater to Indian and multinational corporates, high net worth individuals, financial institutions, start-ups and expatriates with a client spread across various industries.


imagesMAS is registered with Institute of Chartered Accountants of India (ICAI) and Public Company Accounting Oversight Board (PCAOB) , United States of America. We are also an ISO 9001:2015 certified company.


imagesWe are affiliated with The International Accounting Group (TIAG) which is a worldwide alliance of independent accounting firms with more than 115 members based in over 65 countries.


imagesMAS is a congregation of professionally qualified and experienced personnel who are capable of providing sound business guidance to clients. Our team of chartered accountants abides by a code of conduct and have vast knowledge, professional experience and specialized skills to serve the clients better by providing sound financial advice as well as solutions to them.

Our comprehensive suite of specialized services caters specifically to the diverse needs of small to medium-sized enterprises. From Business Setup, Accounting and Bookkeeping, Audit and Assurance, Tax and Regulatory Compliance to Business Advisory and Corporate Law, each solution is accurately tailored to meet the distinct requirements of our clients.

Our dedication to quality is mirrored in our ISO 9001:2015 certification, affirming our unwavering commitment to excellence. Furthermore, our affiliations with The International Accounting Group (TIAG), comprising a network of over 290 independent accounting firms in 110 countries, and the United Tax Network (UTN) position us at the forefront of a rich global landscape steeped in expertise and collaboration.

At Mercurius, we transcend the traditional role of service provider; we are catalysts for sustainable growth and excellence. Acknowledging that success extends beyond numbers, we empower businesses to thrive in a dynamic environment. Our team’s steadfast commitment ensures meticulous attention to detail, sculpting strategies that meet and surpass expectations, significantly contributing to our clients’ growth.

Further, our steadfast dedication persists in redefining industry standards and delivering unparalleled services. Our approach isn’t merely about addressing client needs but anticipating and exceeding them. Mercurius stands ready to navigate the complexities of the business realm, offering solutions and an enduring promise of partnership and prosperity with the help of our Industry Leaders.


To be a trusted partner for businesses
in their growth journey.

"To be a people's organisation which provides client-centric solutions that enhance efficiency and performance. Building a culture that promotes integrity, inclusion and innovation."

0 +
Years of Experience
0 +
0 +
0 +


To be the most reputed, independent Chartered Accountants firm delivering quality services to our clients while providing a work environment where our firm members evolve professionally and can be responsible members of our community.


Exceeding the expectation of our clients by consistently rendering quality services and becoming one of the top consulting firms in India.

Certifications & Associations

Why us

Discover our unique edge for your success

Comprehensive Expertise

  • check A wide range of services that are suitable for your business needs.
  • check A dedicated team of experienced professionals.
  • check Guiding clients through every aspect of their business journey: business setup, accounting, audit, tax compliance and back-office support.
  • check Delivering comprehensive solutions tailored to individual requirements.

Tailored Approach

We understand that each business is unique. Our tailored solutions ensure that the services cater to your needs and industry requirements. Whether you are a startup or an established enterprise, we work closely with you to develop customized solutions that align with your goals and industry regulations.

Cost-Effective Solutions

We strive to provide premium, cost-effective solutions and streamline your investment for maximum effectiveness.

Audit Excellence

We provide comprehensive audit services that offer valuable insights and ensure accurate financial records. We are one of the few firms in India that performs PCAOB (USA) and CPAB (Canada) audits.

Dedicated Client Support

Our dedicated team is committed to providing prompt and reliable support. Our experts can assist you with strategies, compliance, and taxes.

Ready to Elevate your Business?

Client Insights

Real Experiences, Visible Impact

"I also want to take a moment to appreciate all the effort that the AJSH team puts in. We appreciate your team’s reliability and enjoy collaborating with you."

Mariya Sajan Legal Counsel, YOP Factory LLC

"AJSH’s team gives our organization great support. They are knowledgeable, responsive and thorough, and all this at an excellent value"

Nakul Sehgal Uninor

"Thank you very much for all your hard work with the audit this year. As always, it was a pleasure working with Ankit and AJSH."

Anand Patel Surya Capital Securities, LLC

"I want to thank Ankit and the team members for once again doing an excellent job for the audit this year"

Granville A. Ungerleider Whitemarsh Capital, LLC

"On your contribution to Indus Towers, I would like to say you are our crisis man and your attitude at times of stress is impressive, to say the least."

Mr Kaustav Neogi Indus Towers, Gurgaon

"MAS has been an added advantage to our organization. We are grateful for the hard work and exemplary services provided by their team. They are a pleasure to work with and always accommodating."

Ram Mukunda India Globalization Capital Inc.

"I would like to thank and congratulate MAS team for their excellent support and cooperation. It was really a great experience during the assignment."

Shashikant Goswami BorgWarner Emissions Systems India

"Your team is extremely professional, well versed in the relevant tax and regulatory matters and always courteous. We are fortunate to have found this relationship"

Stephen Nasser Coit Capital Securities, LLC

Ready to assist with your Queries