Hire the Best Tax Advisors

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!

Hi there! I'm Manvi, a US CPA and Chartered Accountant with 15+ years of experience helping businesses across the USA, Canada, UK, Australia and Europe stay financially organized and tax compliant. I'm a freelancer working as a part of the Maspartner team. SOFTWARE & PLATFORMS: QuickBooks (Online & Desktop) | Xero | ZohoBooks | Wave | NetSuite | Appfolio BOOKKEEPING & ACCOUNTING SERVICES -Accounting software setup and integration -Bank and credit card reconciliation -AP/AR management -Payroll administration and processing -Data migration and system transitions -Month-end and year-end reporting: P&L, Balance Sheet, Cash Flow Statements -MIS reporting and business performance dashboards TAX PREPARATION, FILING & CONSULTING USA — Federal Returns: 1040, 1065, 1120, 1120S, 5471, 5472 | Non-Profits: 990 series | FBAR & FinCEN Form 114 | S-Corp Election: Form 8832 | State Annual Returns | Sales Tax Returns | Payroll Tax: 940, 941, 941X, ERC | Form 1099 & W-2 Filing | SS-4, W-7, 4562 | IRS Penalty Notice Assistance Canada — T1 & T2 Returns | GST, HST, PST Filing | T4 & T4A Payroll Slips United Kingdom — Self-Assessment SA100 | Corporation Tax CT600 | VAT Filing | PAYE & National Insurance | Annual Accounts & Confirmation Statements ACCOUNTING & FINANCIAL CONSULTING Tax planning and structuring for individuals and businesses Consultation for accounting and tax strategies Accounting software selection and implementation advisory Financial health assessments and process improvement Cash flow planning and management consulting Business setup and entity structure advisory White-Label Support for CPA & Tax Firms Overflow and busy-season capacity under your firm's brand: full-charge bookkeeping, catch-up & clean-up, AR/AP, payroll processing, workpaper preparation, financial statement compilation, tax return preparation & review support, and 1099/W-2 processing — delivered review-ready on your systems. INDUSTRIES I SERVE: Ecommerce & Retail (Amazon, Shopify, Walmart, Etsy, eBay) | IT & SaaS | Accounting, Tax & CPA Firms | Branding & Marketing | Non-Profits | Logistics & Shipping | Real Estate & Construction Clean books. Accurate filings. No last-minute scrambles. That's what I deliver. Let's build a financial system that actually works for your business. Message me to get started; I'd love to hear about your needs!

I help CPA firms, business owners, and high-income individuals legally reduce their tax liability—often saving $10,000 to $500,000+ through strategic tax planning. I’m a Senior US/UK Tax Strategist with 12+ years of experience, delivering over $1M+ in tax savings by identifying overlooked opportunities, optimizing tax structures, and ensuring full IRS and HMRC compliance. Most accountants focus on filing taxes. I focus on minimizing what you pay. 🔍 Who I Work With CPA firms needing experienced, reliable tax professionals High-income individuals looking to reduce tax burden Business owners (LLCs, S-Corps, partnerships) Clients with complex or multi-entity structures 🧾 Services I Offer ✔ Advanced tax planning & strategy ✔ Federal & State tax return preparation ✔ Tax reduction strategies (credits, deductions, restructuring) ✔ Review & correction of prior returns ✔ CPA firm support (CCH, Drake, Lacerte, ProConnect, TaxAct) 💡 Why Clients Choose Me 12+ years of specialized US tax experience Proven results: $1M+ in tax savings delivered Strong command of IRS code & compliance Detail-focused with fast turnaround Long-term partner mindset (not just one-off projects) 📩 Let’s Work Together If you're looking to reduce taxes, stay compliant, and improve financial outcomes, send me a message. I’ll review your situation and suggest the best strategy.

Behind on your bookkeeping? Dealing with messy reconciliations, inaccurate financials, or approaching tax deadlines? I help US businesses and CPA firms maintain accurate, organized, and CPA-ready books — from day-to-day bookkeeping and QuickBooks Online management to cleanup, reconciliations, financial reporting, payroll, and US tax support. Top Rated on Upwork | 100% Job Success Score | US PTIN & EIN Holder -BOOKKEEPING & ACCOUNTING • Monthly, Quarterly & Year-End Bookkeeping • QuickBooks Online & QuickBooks Desktop • Catch-Up & Cleanup Bookkeeping • Historical Bookkeeping & Transaction Cleanup • Bank & Credit Card Reconciliation • Accounts Payable & Accounts Receivable • General Ledger Maintenance • Journal Entries & Adjustments • Month-End & Year-End Close • P&L, Balance Sheet & Cash Flow Statements • Financial Reporting & Cash Flow Analysis • Payroll Processing & Payroll Reconciliation • CPA-Ready Books & Year-End Preparation -US TAX PREPARATION & SUPPORT • Individual & Business Tax Returns — 1040, 1065, 1120 & 1120-S • Nonprofit Returns — 990 Series • Payroll Tax Returns — 940 & 941 • Sales Tax Support • FBAR / FinCEN 114 • 1099 & W-2 Preparation • Book-to-Tax Reconciliation • Tax Data Organization & Preparation Support • IRS Notice & Tax Resolution Support • Entity Formation & IRS Elections -SOFTWARE & PLATFORMS QuickBooks Online | QuickBooks Desktop | Xero | NetSuite | AppFolio | Buildium | Zoho Books | Wave | FreshBooks -INDUSTRIES I SERVE • Real Estate & Property Management • eCommerce — Amazon, Shopify, Walmart, Etsy & eBay • CPA, Accounting & Tax Firms • Professional Services • Construction • Healthcare • Restaurants • Logistics • Nonprofits • Startups & Small Businesses - WHITE-LABEL SUPPORT FOR CPA & ACCOUNTING FIRMS Need additional accounting capacity without hiring another full-time employee? I work as an extension of your team, providing white-label bookkeeping, reconciliations, cleanup, financial statements, payroll support, tax preparation support, and year-end accounting services under your firm’s brand. Whether you need ongoing bookkeeping, QuickBooks Online support, catch-up or cleanup work, financial reporting, payroll assistance, or tax-season capacity, I can help your team handle the workload without adding another full-time hire. WHY CLIENTS WORK WITH ME -Top Rated Upwork Freelancer -96% Job Success Score -US PTIN & EIN Holder -QuickBooks Online & Xero ProAdvisor -CPA & Accounting Firm Support -CPA-Ready Books & Financials -Responsive Communication & Reliable Turnaround My goal is simple: keep your books accurate, your financials organized, and your business ready for what’s next. Send me a message and let’s discuss how I can help.