Siddhartha H.

I'm Siddhartha, a qualified ICAEW member, agency owner of Mercurius Advisory Services (MASPARTNER), and a finance professional with over two decades of experience working with industry giants like Grant Thornton, PwC, and American Express. At MAS, my team and I offer a full suite of financial services to clients across 30+ countries, including the USA, Canada, Australia, UK, Europe, Singapore, the Middle East, Africa, and India. Whether you need day-to-day bookkeeping, complex tax filings, or high-level CFO guidance, we've got it covered under one roof. What makes us different? Every engagement benefit from my CFO-level oversight, which means your numbers don't just get recorded; they get interpreted and acted upon. OUR CORE SERVICES -Bookkeeping & Accounting -Full-cycle bookkeeping and transaction recording -Accounts Payable & Receivable management -Bank and credit card reconciliation -Inventory and stock management -Financial and management reporting -CFO & Strategic Finance Services -Budgeting and financial forecasting -Financial planning and analysis (FP&A) -Analytical and strategic financial support -Controllership and oversight services White-Label Accounting & Tax Support for CPA Firms Reliable back-office support for CPA and tax firms looking to manage overflow work, seasonal deadlines, and ongoing client needs. Support includes bookkeeping, reconciliations, AR/AP, payroll, workpapers, financial statement assistance, tax preparation support, 1099/W-2 processing, and sales tax filings, all completed under your firm’s brand and systems. Tax Services -Personal and corporate tax (US, UK, UAE, Australia & Canada) -Sales tax registration and filings -Company and personal tax preparation -Payroll processing and compliance Business Formation & Compliance -Company registration (US, UK, Canada, UAE, Australia) -ITIN/EIN services in the US -Ongoing compliance management COUNTRIES SERVED USA | Canada | Australia | UK | Europe | Singapore | Middle East | Africa | India | UAE |30+ Countries Long-term relationships are something we genuinely value, and we work hard every day to deserve them through accurate, timely, and confidential service. Ping me directly to discuss how MAS can support your business!