About Us

Mercurius Advisory Services (MAS) offers you the pleasure of sitting back in your business as we offer immaculate, insightful and analytical solutions for finance management of your business. We have a solution-based approach to suit your complex needs. Our range of services span from accounting, bookkeeping, and taxation catering to small, medium and large businesses.

We have a proficient team of in-house CPAs, ACCAs, CAs, MBAs and qualified bookkeepers certified in numerous accounting software. Our diverse clientele are spread over US, UK, Australia, Canada, Singapore, UAE, EU, etc.

MAS delivers value to get them where they want their business to be.


Siddhartha Havelia

Siddhartha Havelia

Along with the professional experience, we are driven by a set of core values to ensure a positive client experience. We have top-experts on board with international caliber and technical depth who customize their services as per the unique business needs to deliver top-notch results. We strongly believe that our employees are our greatest strength and hence believe in recognizing them solely based on their performance.
siddhartha@maspartner.com , +919811325385
Ankit Jain

Ankit Jain

We have built a large team of distinct professionals with diverse experience across sectors, which gives us a unique advantage in addressing a variety of business requirements of our clients and help them adopt sound practices. We are a one-stop shop for our clients providing tailor made solutions, right from incorporating - a company to its winding up in a cost-effective manner
ankit@maspartner.com, +91-98106-61322

Meet our Experts


Certified Public Accountant, USManvi Arora

Chartered Certified Accountant, UKYitesh Bhalla

Chartered AccountantChandramani Goel


Chartered AccountantRajeev Ranjan


Chartered AccountantRohit Kumar


Chartered AccountantGaurav Kohli


Chartered AccountantMehak Taneja


Chartered AccountantRavi Gupta


Chartered AccountantRajesh Bansal


Financial AnalystVishal More


US AssociateCraig Clayton


UK OfficeDario Grana

Our Journey,
Since 2008

2008-2010: Existence

Focus on strengthening the core

➤ Execution of medium to large scale PAN India projects
➤ Registered with PCAOB, USA
➤ Audited first US listed company
➤ Organic Growth in basic accounting services
➤ Workforce built upto 50 employees and served 100+ clients

2010-2015: Build Phase

Getting stronger foothold

➤ Became ISO 9001:2008 & ISO 27001:2008 certified
➤ Became a member firm of TAG-SP, expanding its footprints in 15+ Western Countries
➤ Became a member firm of TIAG
➤ Grew into a strong team of 100+ employees, serving 250+ clients

2016-2019: Growth Phase

Strengthening market position

➤ Expanded service offerings across countries in Europe, Asia-Pacific, Middle-East, Canada, Australia, the US and the UK
➤ Added new services to the existing bouquet including, International Tax Advisory, Bookkeeping and Accounting, HR & Payroll services, Company Formation, Overseas Compliance Support, Business Licenses and Inter-Country Tax Registrations
➤ Members accredited with CPA(USA) & ACCA(UK) certifications
➤Enrolled as member firm of UTN, expanding firm's presence in taxation internationally
➤Strength enlarged to 150+ employees and clientele expanded to 500+ clients

2020-2023: Current Phase

Making difference for our clients

➤ Collaborated with accounting firms in the US, the UK, Australia, and Japan
➤ Certified as the only "IRS Certified Acceptance Agents" in New Delhi, India
➤ Conversion of financial statements to IFRS / Ind-AS
➤ Handling audit assignments for 15 US public listed companies as well as broker/dealer firms
➤ Added new business streams including Business Formation in the US, the UK, Canada, AUS, and UAE, ITIN/EIN services, Virtual CFO Services, Business Acquisition & Valuation Services, and Business License Registrations
➤ Became ISO 9001:2015 and 27001:2013 certified
➤ Attained CPAB (Canada)
➤ Members accredited with CPA(AUS) & ICAEW(UK) certifications
➤ Professional Strength crossed 250 employees and with 750+ active clients onboard
I needed help setting up a payroll system for my new company. I also needed support with other accounts-related tasks along the way. The team was excellent: highly supportive, responsive and efficient. A real pleasure to work with. Thank you!
Deirdre Tunney
Sunshine Cleaning, Germany
MERCURIUS ADVISORY SERVICES onboarding went very smooth and without any issues. We are extremely happy with the services provided so far.
Amish Mistri Aug 7, 2021
Aug 7, 2021
We have been working with MAS for about 6 months, using their help for incorporating our US entity as well as ongoing book-keeping activities. We are very pleased with their quality of service at the price point. You get a single point of contact for all activities and they have a pretty streamlined process internally to keep your book-keeping up to date. Another positive is that they understand the Amazon's processes and terms quite well giving you the right interpretation of your numbers. We expect to continue working with them.
Aug 6, 2021
MAS provides an excellent service bookkeeping and tax filing preparation for us. We have been working with them for over 3 years and they are a pleasure to have on your side. Highly recommended!
Mark Kubala
Jul 2, 2020
The team is very knowledgable and professional in managing my monthly bookkeeping and the price is affordable. I would highly recommend their service.
Greenmile Global Support Team
Aug 6, 2021
I have used MAS for a few years now and have been very happy with the service. We get high level CPA quality work, and they have helped us not only get accurate reporting for Amazon, but also complete financials with reconciled bank accounts and credit cards. With MAS I always have an accurate P&L and balance sheet at the end of each month, as well as expert advice when I am making big financial decisions etc. I can't recommend them highly enough.
Dirobi LLC
May 29, 2020
Very good service provides that understands the Amazon business model. They know how to track inventory accurately, as well as reconcile with A2X/Xero for acurrate tracking of income/expenses in the correct account. Very impressed. Been working with them for over a year and very happy with results.
Andrey Gabets
Jun 3, 2020
We worked with them for Pre incorporation services, Bookkeeping activities and Tax compliances, their response to our queries and turn around time is very good, we are happy with overall services they have provided.
Phalada Agro Research Foundations Pvt Ltd
Aug 17, 2021
Excellent service provider, atentive to all your questions and very patient and professional
Yineri Villalobos
12 Aug, 2021