Tax & audit,
handled with precision.
Year after year.
A boutique chartered accountancy practice serving founders, family businesses and multinationals across India — pairing AI-driven precision with partner-led judgment to remove the complexity from compliance, planning and statutory audit.
Seven disciplines.
One quiet team.
Whether you need a single return filed or a full statutory audit conducted across multiple entities, our partners and associates are organised into focused practice groups — pairing AI-driven precision with partner-led judgment — so the right desk picks up your file from day one.
ITR Filing
Accurate, on-time income tax returns for individuals, firms, LLPs and companies — with rectifications, refunds and notice handling end to end.
- Salaried & business returns
- Capital gains & foreign assets
- Notices, rectifications, appeals
- Refund follow-through & CPC liaison
Tax Planning
Year-round, structure-aware tax planning — designed to lower outflow without inviting scrutiny or compromising on future flexibility.
- Entity & remuneration design
- Investment & capital structuring
- Advance tax forecasting
- Family & succession positioning
GST Returns
Monthly, quarterly and annual GST compliance with ITC reconciliations, e-invoice readiness, and prompt response to departmental queries.
- GSTR-1 / 3B / 9 & 9C filings
- Input Tax Credit reconciliation
- Refunds, audits, representations
- E-invoice & e-way bill compliance
TDS & TCS Reconciliation
Vendor-level reconciliation against Form 26AS, AIS and TIS — so credits aren’t lost, defaults don’t compound, and refunds come through on time.
- Quarterly TDS / TCS returns
- 26AS · AIS · TIS matching
- Default rectification & CPC notices
- Form 16 / 16A issuance & corrections
Expat Tax & Transfer Pricing
Cross-border employees, related-party flows, and the documentation that satisfies both the assessee and the assessing officer.
- Residency & DTAA positions
- Form 3CEB · TP study reports
- Inbound & outbound assignments
- Master & local file documentation
Tax Litigation & Representation
Notices, scrutinies and assessments handled with documented responses and partner-led representation through every tier of the appeal hierarchy.
- Assessments & scrutiny replies
- Notices · show-cause · penalty
- CIT(A) & ITAT appeals
- High Court & writ representation
Statutory Audit.
An independent statutory audit conducted under the Companies Act, 2013 and applicable Standards on Auditing — with documented testing, partner sign-off and a board-ready report.
- Companies Act 2013 · Ind AS / AS
- Substantive & analytical testing
- Internal controls & CARO reporting
- Board report & management letter
Twelve names. One signature standard.
Two co-founders and ten partners — every engagement at our practice carries a name from this page. The roster rotates below — tap any card to pause.
Ankit Jain
Co-Founder— MAS LLP
Siddhartha Havelia
Co-Founder— MAS LLP
Rajesh Bansal
Partner— Tax & Regulatory
Mehak Taneja
Partner— India Business Setup
Ravi Gupta
Partner— Audit & Assurance
Gaurav Kohli
Partner— M&A and Valuation
Rohit Kumar
Partner— Global Business Setup
Vishal More
Partner— CFO Advisory
Manvi Arora
Specialist— US Accounting & Tax
Rajeev Ranjan
Partner— Canada Tax & Accounting
Yitesh Bhalla
Partner— UK Accounting & Tax
Chandramani Goel
Partner— Australia Accounting & TaxQuiet introductions, said out loud.
Mercurius has been conducting our PCAOB audit since 2020. They have a great team with high standards of professionalism and excellence in their work — indeed an incredible team to work with.
Got my ITR filed through Mercurius and had a great experience. Sakshi and Divyansh were super helpful — answered all my calls and cleared every doubt. Definitely recommend them.
For over six years, Mercurius has been our trusted partner for broker-dealer audits. Their accuracy and deep regulatory understanding make the process seamless. Reliable, on deadline, great support.
Excellent service. Competent work. They instruct as they audit, improving the company’s record keeping and control. Strict standards and practical solutions. Highly recommended.
Associated with Mercurius for over seven years — service always outstanding. Whether personal or business accounting, they consistently go above and beyond. Truly a top-notch firm.
Worked with Mercurius for four years and have had a wonderful experience. Called the PCAOB board to check them out and reviewed their SEC filings. Easy to work with, very professional.
Very professional and agile in their work. System-driven, with the approach of a large firm yet a personalised relationship with each client.
Three kinds of client. One standard.
Founders & Scale-ups
Built for the next round.
Family Businesses
Stewarded across generations.
Cross-border
Two passports, one ledger.
Open the book. Turn the pages.
First call to first filing — five pages, AI-assisted, partner-led.
A short call.
We listen first — to your books, your timing, and the moment you find yourself in. By the end, both sides know whether to proceed.
A written proposal.
Within forty-eight hours: deliverables, timing, quote, and the partner who will handle you. Read it before you commit.
Letter signed.
Your engagement partner is assigned by name. Everything runs through that one chair — not delegated below.
Records in hand.
First thirty days: handover from prior advisors, KYC complete, system access granted, opening position reconciled clean.
A quarterly rhythm.
Partner-led review at the close of every quarter. No surprises. No year-end scrambles. This is where the relationship lives.
Let's start the conversation.
Our Offices worldwide 6 cities
— India · USA · Japan · UAE —New Delhi
India · 110052A-94/8, Wazirpur Industrial Area, Main Ring Road.
Map BranchNoida
U.P. · 201301Cabin 010, Office Square, Tower A-1, Sector 3.
Map BranchGurugram
Haryana · 122009Cabin 210, OFIS Square, Vatika Triangle, Sushant Lok.
Map RepresentativeOakland
USA · MD 215505000 Thayer Center, Suite C, Maryland.
Map RepresentativeTokyo
Japan · 101-0051MT-O Jinbocho 3F, 1-14-3 Kanda Jinbocho, Chiyoda-ku.
Map OfficeDubai
U.A.E.Meydan Grandstand, 6th Floor, Nad Al Sheba.
Map
Tax, GST & audit —
answered plainly.
The questions clients and visitors actually search for — answered by the partner who would handle your file, and updated each year when the law changes.
I. How much does it cost to hire a CA for ITR filing in India?
The cost of hiring a chartered accountant for ITR filing in India ranges from a few hundred rupees for a simple salaried return to several thousand for returns involving capital gains, foreign assets, business income or notices.
We quote a fixed fee in a written proposal within 48 hours of your first call — and nothing is billed until the engagement letter is signed. The fee follows the complexity of your income, not a price list.
II. How do I choose a reliable CA firm for my business?
Choose a firm that is ICAI-registered, names the partner who will personally sign your work, commits to deadlines in writing, and is candid about what it does not handle. Check independent reviews and ask who reviews each deliverable before it leaves the office.
We have practised since 2007, hold a 4.9 rating across 50+ verified Google reviews, and assign a named partner to every engagement.
III. Can I switch my chartered accountant mid-year?
Yes — you can change your CA at any point in the year, and a clean handover takes roughly thirty days. With your written permission, we coordinate with your previous advisor, complete KYC, reconcile your opening position, and you sign off before we begin.
No interruption to your filings. No gap in the audit trail. We don't speak ill of the previous CA — we just pick up cleanly.
IV. Do you work with clients remotely, outside Delhi NCR?
Yes. We serve clients across India and abroad entirely remotely — secure digital handover, partner-led video reviews. Most engagements run end-to-end without a single in-person meeting.
Our offices are in New Delhi (head office), Noida and Gurugram, with international desks in the USA, UAE and Japan.
V. What is the last date to file ITR for AY 2026-27?
For FY 2025-26 (AY 2026-27), the ITR due date is 31 July 2026 for salaried individuals and others not requiring an audit, 31 August 2026 for non-audit business returns (ITR-3 / ITR-4), 31 October 2026 for audit cases, and 30 November 2026 for transfer-pricing cases.
Filing before the due date also lets you carry forward losses and avoid the late fee. Miss it, and you're into belated-return territory.
VI. What happens if I miss the ITR deadline?
You can still file a belated return, but a late fee applies under Section 234F — ₹5,000, reduced to ₹1,000 if your total income is up to ₹5 lakh — plus interest on any unpaid tax. You also lose the right to carry forward most losses.
Filing late still beats not filing. We regularly regularise overdue returns and handle the notices that follow.
VII. Do I actually need a CA to file my income tax return?
Not for a simple salaried return — you can file that yourself. A chartered accountant earns their fee when you have capital gains, foreign income or assets, business income, multiple income sources, or a notice in hand.
A CA helps you claim every eligible deduction, pick the right tax regime, and file correctly the first time — so you don't invite scrutiny.
VIII. Old or new tax regime? Which should I pick?
It depends on your income and how many deductions you claim. The new regime offers lower slab rates but removes most exemptions; the old regime suits those with significant deductions like 80C, home-loan interest and HRA.
Because slabs and rebates are revised in every Union Budget, the right choice should be recalculated each year. Our planning desk runs both scenarios before filing.
IX. How can I reduce my income tax legally?
Through year-round planning: structuring salary and business remuneration efficiently, timing capital gains, using eligible deductions and exemptions, and choosing the optimal tax regime.
The key is to plan before the financial year ends, not at filing time — lowering your outflow without inviting scrutiny. That's the line our advisory work is built around.
X. What is the turnover limit for GST registration?
GST registration is mandatory once aggregate annual turnover exceeds ₹40 lakh for goods and ₹20 lakh for services in most states (₹20 lakh and ₹10 lakh in special-category states).
It's also compulsory regardless of turnover for inter-state suppliers, e-commerce sellers and certain other categories. Below the threshold, you can still register voluntarily to claim input tax credit.
XI. What are the penalties for late GST filing?
Late GST returns attract a late fee per day of delay plus interest at 18% per annum on the tax outstanding, and persistent default can block your e-way bills and input tax credit. The exact fee depends on the return type and whether it's a nil return.
We file every GST return before its statutory due date and reconcile input tax credit in the working papers — so credits aren't lost.
XII. Do freelancers and consultants need GST registration?
Freelancers and consultants must register once annual turnover crosses ₹20 lakh (₹10 lakh in special-category states). Registration is also required, irrespective of turnover, if you supply services inter-state, sell through an e-commerce platform, or export services and want a refund.
Many register voluntarily anyway — to claim input tax credit and appear more credible to corporate clients.
XIII. Is a statutory audit mandatory for a private limited company?
Yes. Every company registered in India — private limited or public — must have its accounts audited by a chartered accountant under the Companies Act, 2013, regardless of turnover or profit. This is separate from a tax audit.
Our statutory audits run under applicable Standards on Auditing, with documented testing and partner sign-off, and a board-ready report within three weeks of a clean trial balance.
XIV. What's the difference between statutory, tax and internal audit?
A statutory audit is mandatory for all companies under the Companies Act, 2013 and gives an independent opinion on the financial statements. A tax audit under Section 44AB applies once turnover or receipts cross prescribed limits and is filed with the Income Tax Department.
An internal audit is voluntary (or applicable to larger companies) and reviews internal controls and processes. A business may need more than one.
XV. What is the tax audit turnover limit under 44AB?
A tax audit under Section 44AB is generally required when business turnover exceeds ₹1 crore (raised to ₹10 crore where cash receipts and payments are within 5% of the total), or when professional gross receipts exceed ₹50 lakh in a financial year.
These thresholds can change with the annual Budget, so confirm the limit for your specific case before assuming you're exempt.
XVI. Do NRIs need to file an income tax return in India?
An NRI must file an Indian return if income earned or accrued in India — rent, capital gains, interest — exceeds the basic exemption limit, or to claim a refund of TDS deducted at source. Income earned outside India is generally not taxable for an NRI.
We handle residency determination, DTAA relief and refund follow-through for clients across the US, UK, Canada, Australia and the Gulf.
XVII. What is transfer pricing, and who files Form 3CEB?
Transfer pricing governs the pricing of transactions between related parties across borders. Form 3CEB is a chartered accountant's report that must be filed by any taxpayer entering into international transactions (or specified domestic transactions) with associated enterprises.
The 3CEB and supporting study are due before the ITR deadline. Our TP partners prepare master file, local file and 3CEB documentation that satisfies both the assessee and the assessing officer.
XVIII. Can you handle my companies in the US, UK, Canada or Australia, abroad?
Yes. We have partners with local credentials and filing infrastructure for India, the US, the UK, Canada and Australia — so one engagement letter can cover a group across jurisdictions, with a single point of contact.
Where we don't operate locally (mainland Europe, the Gulf, Singapore), we work with vetted correspondents — and we're candid on the first call about where the line is.
XIX. How can a foreigner or NRI register a company in India?
A foreigner or NRI typically sets up a private limited company or wholly-owned subsidiary — obtaining Director Identification Numbers and digital signatures, reserving a name, filing incorporation documents with the MCA, and completing GST, PAN, TAN and bank-account registrations.
Most foreign direct investment is allowed under the automatic route. Our India Business Setup desk runs the full process and the ongoing compliance after incorporation.
XX. What does "AI-driven" mean here — and is my data safe?
AI-AssistedIt means we use automated tools for the mechanical work: 26AS / AIS / TIS reconciliation, vendor-level matching, invoice OCR, audit anomaly flagging, and first-pass drafts of routine notice responses.
Every output is partner-reviewed and signed before it reaches you or any department. The technology handles the patterns; the judgment — and the accountability — remain ours.