Practice founded in Kolkata
A contemporary firm
built on five legacies.
ATPM and Co is a partnership firm registered with the Institute of Chartered Accountants of India, constituted on 17 June 2013 under Firm Registration Number 328278E.
Regulatory rigour, technology-led delivery.
ATPM and Co is a contemporary Chartered Accountancy firm headquartered in Kolkata, formed by the union of five established practices under a single name - bringing audit, taxation, advisory and technology-enabled compliance onto one platform.
We serve individuals, MSMEs, startups and corporates, combining deep regulatory expertise with AI-driven automation, forensic analytics and data-protection compliance.
"Clarity. Confidence. Sustainable Growth."
What we're building.
To be the preferred professional organisation, trusted for excellence in accounting, taxation and business advisory - where regulatory rigour converges with technology-led innovation.
- Deliver high-quality, practical services exceeding client expectations through integrity and independence.
- Integrate AI-enabled automation, forensic analytics and DPDPA compliance into advisory.
- Provide transparent, ethical guidance across audit, tax, litigation, M&A and regulatory matters.
- Foster a dynamic, learning-oriented team that adapts to emerging regulations and technologies.
How the firm grew.
An event-led timeline of the milestones that shaped ATPM And Co.
- 2013Milestone 01
- 2016Milestone 02
Reconstituted as a partnership firm
- 2018Milestone 03
Partnership expanded
- 2026Milestone 04
Five practices merge into one
- 2026Milestone 05
Renamed ATPM And Co
Every practice carried forward.
Merged with effect from 29 June 2026 into a single firm - the combined depth of five established practices.

Kolkata · Hyderabad · Bengaluru
Unit 608, 6th Floor, Active Business Park, 54/10 D C Dey Road, Tangra, Kolkata 700015
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