Chartered Accountants · Tirunelveli
The audit and tax partner Tirunelveli's leading businesses trust.
Karthik & Co combines rigorous, independent audit work with the hands-on, partner-led attention of a focused practice. Complex business compliance, handled with the discipline of a much larger firm.
Led personally by CA Karthik · Based in Tirunelveli · Serving businesses across Tamil Nadu
Who we are
A modern firm, built on audit discipline and personal attention.
Karthik & Co was founded in Tirunelveli in 2010 by CA Karthik, with a clear purpose: bring the technical rigor of a large audit practice to businesses that deserve better than a generic, one-size-fits-all accountant.
Over the years, that focus on getting the fundamentals right — careful audits, defensible tax positions, and compliance that holds up under scrutiny — has made the firm a trusted partner for some of the city's most established businesses. We remain proudly rooted in Tirunelveli, working with a small, capable team of accountants so that every engagement still gets Karthik's direct attention.
We believe good advisory doesn't require a big-city address — it requires discipline, currency with the law, and a genuine stake in your outcome.
What sets the practice apart
Audit-grade discipline
Audit and complex compliance work form the core of the practice, not an add-on — the reason a number of Tirunelveli’s most established businesses have chosen it as their compliance partner.
Direct partner access
There are no account managers or hand-offs. The person reviewing an audit or signing off a return is the person clients speak with.
A client base spanning the full spectrum
Established local businesses and private companies, trusts and societies, smaller enterprises, individuals, and NRIs with property and investments back home.
Rooted in Tirunelveli, current with the law
Local by choice, not limitation — proximity to clients doesn’t come at the cost of staying current with fast-changing tax and compliance regulations.
Responsive by design
Clear timelines, proactive updates, and a compliance calendar that keeps clients ahead of deadlines rather than reacting to them.
Our values
- Integrity
- Straightforward, honest advice — even when it isn't the easy answer.
- Objectivity
- Independent judgement, free of bias or conflict of interest.
- Confidentiality
- Your financial information stays within the firm, always.
- Professional Competence & Due Care
- Every engagement held to current, technically rigorous standards.
- Professional Behaviour
- Conduct that reflects well on the profession and on your trust in us.
What we do
Five practice areas, anchored by audit and complex compliance expertise.
Audit & Assurance
Rigorous, independent assurance — the same discipline larger firms bring, applied with the attention only a focused practice can give.
- Statutory Audit ·
- Tax Audit ·
- GST Audit ·
- Internal Audit & Controls Review ·
- Stock Audit ·
- Trust & Society Audit ·
- Due Diligence
Taxation
Complex business tax compliance handled with precision — and planning that keeps you ahead, not just compliant.
- Income Tax Returns ·
- Tax Planning & Advisory ·
- TDS/TCS Compliance ·
- GST Registration & Returns ·
- GST Reconciliation & Refunds ·
- Scrutiny & Appeals ·
- NRI Taxation
Accounting & Compliance
Clean books and reliable numbers, so you always know where the business stands.
- Bookkeeping & Accounting ·
- Payroll Processing ·
- MIS Reporting ·
- Financial Statements ·
- Compliance Calendar Management ·
- Virtual CFO Support
Company & Corporate Law Compliance
Start right, stay compliant — from registration to annual filings.
- Company / LLP / Trust Formation ·
- ROC Annual Filings ·
- Company Law Advisory ·
- Startup & MSME Registration
Advisory Services
Decision-grade guidance when it matters most.
- Business Structuring ·
- Capital Gains Advisory ·
- Certifications for Loans & Visas ·
- Bank Project Reports ·
- Succession Planning
Not sure which service you need? Tell us about your business and we'll point you in the right direction — no obligation.
Talk to usHow we work
A clear path from first conversation to ongoing advisory.
- 01
Discover
We begin by understanding your business, objectives, financial position and immediate priorities.
- 02
Assess
We review your compliance, financial processes and risks to identify gaps, opportunities and areas that need attention.
- 03
Deliver
We execute the agreed engagement with clear ownership, defined timelines and careful attention to accuracy and compliance.
- 04
Advise
We go beyond compliance to provide ongoing guidance, helping you make informed decisions and plan ahead with confidence.
Questions, answered
Do you only work with large or established businesses?
Not at all. While complex audit and compliance work for established businesses is a core strength, we work with companies, partnerships, trusts, smaller enterprises, and individuals too. We scope every engagement to fit where you are.
What services do you offer beyond audits?
Alongside audit and assurance, we handle direct and indirect tax compliance, day-to-day accounting and payroll, company/LLP/trust formation, ROC compliance, and financial advisory including business structuring and succession planning.
Do you work with NRIs?
Yes. We regularly assist NRIs with Indian tax filings, property transactions, and repatriation matters — a common need in Tirunelveli given how many families here have members abroad.
Where are you located, and who do you serve?
Our office is in Tirunelveli. Most of our audit and compliance clients are based here and across Tamil Nadu, and we support clients more broadly for tax filing and advisory work regardless of location.
How do we get started?
Reach out by phone, WhatsApp, or email for an initial conversation. We'll understand your situation, explain how we can help, and outline clear next steps before you commit to anything.
Insights
Resources and articles to help you stay ahead of compliance.
Resources
- EPFOProvident fund registration, contributions, and member services for employers and employees.
- GST PortalRegister for GST, file returns, and track applications and notices.
- ICAIThe Institute of Chartered Accountants of India — the profession's regulatory and standards body.
- Income Tax e-Filing PortalFile returns, check refund status, and manage PAN/Aadhaar linkage on the official portal.
- Ministry of Corporate Affairs (MCA)Company and LLP incorporation, annual filings, and ROC compliance services.
- TRACESTDS reconciliation, Form 26AS, and correction statements for tax deducted at source.
Articles
- Announcement20 September 2026
Announcement: GSTR-9 due date extended
The annual GST return filing deadline has been extended — clients should confirm their revised filing date with our office.
- Announcement10 January 2026
Announcement: Office hours during Pongal
Our office will observe revised hours during the Pongal holidays. Urgent matters can still reach us on WhatsApp.
- 15 December 2025
A year-end tax planning checklist for small businesses
A few practical steps worth reviewing before the financial year closes — from advance tax to investment proofs.
Contact
Let's talk about your business
Send a note and we'll get back to you, or reach us directly using the details below.
- Near Tirunelveli Junction, Tirunelveli – 627 001, Tamil Nadu
- Mon–Fri: 9:30 a.m. – 6:30 p.m. Sat: 9:30 a.m. – 1:30 p.m.