Connect with us Offshore Support Solutions for Firms & Companies Worldwide
Streamlining your business processes so you can focus on your core operations.
Hand over the time-heavy back-office work — audit, accounting, payroll, taxation and KPO — to a qualified team in India that works as a seamless extension of your office. You keep control and client relationships. We take the workload off your plate.
Reliable Offshore Outsourcing for CPA Firms and Growing Businesses
Running a firm today means doing more with a smaller team. Skilled accountants are hard to find, deadlines keep piling up during busy season, and hiring full-time staff for every task is expensive. This is exactly the problem of offshore outsourcing was built to solve.
At Mercurius, we take the repetitive, documentation-heavy work off your desk so your own people can focus on judgement, advisory and clients. Whether you are a CPA firm in the US, an accounting practice in the UK or Canada, or a growing company anywhere in the world, we plug into your workflow and deliver work that is accurate, on time and ready for review.
We are a team of professionals with 18+ years of experience in accounting and financial services, including tax professionals, PCAOB-registered auditors, CPAB (Canada) professionals, and other experienced specialists. With this diverse expertise, we bring strong technical knowledge, international standards, and practical experience to every engagement—helping our clients meet the standards expected by regulators and global businesses.
Why this matters right now: The finance & accounting outsourcing market is set to cross USD 59 billion in 2026, and the US alone is facing a shortage of over 165,000 accountants a year. Firms are no longer outsourcing just to cut costs — they are doing it to keep up with the work at all.
What You Can Offshore/Outsource To Us?
We focus on five core areas where firms and businesses need the most support. Each one is handled by trained professionals, not generalists.Most requested
Audit Outsourcing |
Year-round
Accounting Outsourcing |
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We help CPA and audit firms handle the heavy lifting behind every engagement,
so your partners can focus on opinions and clients.We can help you with:
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End-to-end bookkeeping and accounting that stays clean, current, and
decision-ready — without you hiring a single extra seat.We can help you with:
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Season-critical
Taxation Outsourcing |
Every Pay Cycle
Payroll Outsourcing |
From routine filings to complex returns, we prepare accurate,
review-ready tax work so you never miss a deadline or a deduction.
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Payroll is easy to get wrong and costly when you do.
We run it accurately, on schedule, every cycle.
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Analytical Support / Decision-Focused
Knowledge Process Outsourcing (KPO) |
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For analytical and insight-driven work, not just data entry.
Our team supports analysis, interpretation, and decision-ready reporting.
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Why Firms Choose Mercurius For Offshore Support Solutions
Trusted by Businesses Worldwide
There are plenty of outsourcing providers. Here is what makes working with us different — and why US CPA firms have stayed with us for years.
1. Real qualifications, not just cheap labour
Chartered Accountants (CAs), Certified Public Accountant (CPAs), Association of Chartered Certified Accountants (ACCAs) and finance graduates trained with US, UK and international standards. PCAOB, ICAI and CPAB registered.
2. We work in your time zone advantage
The India–US time gap means you send work at the end of your day and get it back the next morning. The busy season moves faster.
3. An extension of your audit team
You keep the client relationship, the review, and the final sign-off. We work quietly in the background, seamlessly fitting into your existing workflows.
4. Your data stays protected
Secure access controls, confidentiality agreements and disciplined processes. Client data security is treated as non-negotiable.
5. Save without cutting corners
Firms typically save 30-50% versus hiring in-house — while quality and turnaround actually improves.
6. Scale up and down freely
Add capacity for tax season or a big audit, then scale back. No long hiring cycles, no idle payroll.
7. Customizable support for every need
No two firms work the same way. We tailor our services, team and workflow to fit your exact business needs — pick one service or all five.
Built for CPA & Accounting Firms (Who We Serve?)
Most of our work is with CPA firms and accounting practices across the US, UK, Canada and Australia — and it’s the work we know best. When your busy season hits, staff are stretched, or you simply can’t hire fast enough, we step in as your offshore team and clear the backlog: audit, accounting, tax preparation, bookkeeping and payroll, all done to the standards your clients and regulators expect.
We’re especially strong with audit (including Funds, Broker-Dealers, Issuers, 401(k) / Employee Benefit Plans, U.S. GAAP audits, and crowdfunding offerings), backed by years of hands-on PCAOB and AICPA audit experience. You keep the client’s relationships and the final sign-off — we handle the heavy lifting behind the scenes.
Not a CPA firm? That’s fine too. We also support small and medium businesses and growing companies worldwide that want reliable accounting, payroll and tax help — without building a full in-house finance department.
Clients Across | Offices in | 400+ |
We keep onboarding simple. Most clients are up and running within a couple of days.
We talk through your needs-A short call to understand your firm, your software and the work you want to hand off.
We build your dedicated team-We get people matched to your work — accounting, audit, payroll, tax or KPO — trained in your process.
We plug in our AI-led process-Our team pairs with AI tools to automate the repetitive work — data capture, matching, reconciliations — so your files come back faster and cleaner, every time.
We start with a pilot- A small batch of work first, so you can see the quality and turnaround before scaling.
We scale as trust grows-Once you are comfortable, we expand capacity and take more off your plate — at your pace.
FAQs
Business process outsourcing includes contracting a third party to provide specific business functions. Various operational processes are necessary to run a business; but, recruiting a permanent employee to manage each process can be costly. Business process outsourcing permits a business owner to utilize experts to handle these duties without the costs associated with hiring permanent staff members.
Outsourcing will not only save your money but time as well – time that can be utilized to focus on growing and improving your business. For example, a corporate executive’s time is best spent developing strategies in core business areas, not agonizing about the day-to-day activities that keep the company running.
Outsourcing will lower down the labour costs, operational costs and technology costs. It abolishes the budget that would be mandatory for recruitment and training. It also reduces the need to invest in office space, furniture, equipment, human resource functions, and technology. The cost savings can enable a business to maintain lower rates, which will upgrade its competitive advantage in the market.
At MAS, our team of experts will guide you through preparing Management Information System (MIS) reports and outsource accounting functions through bookkeeping & accounting, payroll, accounts payable, AR follow-up – Aging analysis and reports, bank/credit card reconciliations, P&L, balance sheet and other regular reports, preparation of tax returns and regulatory compliance
