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.
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

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


US AssociateCraig Clayton


UK AssociateDario Grana

Our Journey,
Since 2008

2008-2012 - Focus On Strengthening The Core

Executed PAN India projects with 30+ clients
Registered with PCAOB, USA
Audited 1st US listed company
Professional strength crosses 50 with 100+ clients

2013-2015 - Getting Stronger Foothold

Became ISO 9001:2008 & ISO 27001:2008 certified
Became a member firm of TIAG, getting a firm foothold in Western Countries
17 countries from Africa added to International practice

2016-2020 - Making Difference For Our Clients

Professional strength crosses 125 with 600+ ongoing clients
Global footprints in countries across US, Europe & Asia Pacific, Middle East, Canada and Australia
Added new business streams:
Payroll services
A services
CFO services
Peer review clearance*
Became a member firm of UTN, expanding firm’s presence in taxation internationally
Became ISO 9001:2015 and 27001:2013 certified
Involved in audit engagement of more than 15 US registered companies including broker / dealers
Incorporated our US entity in Wyoming
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