Sri Lanka's Trusted Financial Partner

Clarity in
every number.

We turn complex financials into confident decisions. Tax strategy, accounting, and business advisory — crafted for companies that move fast.

Free Consultation Explore Services
15+ Years Experience
400+ Clients Served
98% Client Retention
Tax Savings
LKR 4.2M
Saved for clients in 2025
Target78% achieved
100% Compliant
24hr Response
Financial professionals
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Trusted by businesses across
Retail & FMCG Tech Startups Construction Hospitality Healthcare Export & Trade
What We Do

Services built for
serious businesses

Whether you're a lean startup or an established enterprise, our suite of financial services is designed to scale with you.

Tax Planning & Compliance

Strategic tax structuring that legally minimises your liability while keeping you fully compliant with the Inland Revenue Act. We handle self-assessments, VAT returns, and corporate tax filings end-to-end.

  • Corporate & personal tax returns
  • VAT registration & filing
  • Tax dispute resolution
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Accounting & Bookkeeping

Accurate, real-time financial records that give you a clear picture of your business health. From payroll to management accounts, we take the numbers off your plate so you can focus on growth.

  • Monthly management accounts
  • Payroll processing
  • Accounts payable & receivable
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Financial Consulting

High-level advisory for businesses navigating growth, investment, or restructuring. We translate financial data into strategies that accelerate your business objectives.

  • Cash flow forecasting
  • Business valuation
  • Investor-ready reporting
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Audit & Assurance

Independent audit services that build stakeholder confidence. Our assurance work meets international standards and helps identify risks before they become problems.

  • Statutory audits
  • Internal audit reviews
  • Regulatory compliance checks
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Business Advisory

From company incorporation to succession planning, we provide the commercial insight that helps founders and directors make smarter decisions at every stage of the business lifecycle.

  • Company formation & secretarial
  • Mergers & acquisitions support
  • Exit & succession planning
Learn more

Not sure where to start?

Book a free 30-minute consultation and we'll map the right solution for your business.

Book Free Call
CAS team
ICASL Registered
15 Years of
Excellence
Who We Are

Financial expertise,
human at heart

We're a Colombo-based accountancy firm that combines deep technical expertise with a genuine commitment to our clients' success.

Founded in 2010, Commercial Accountancy Service has grown from a boutique tax practice into a full-spectrum financial firm. We work with businesses across Sri Lanka — from early-stage startups to multi-branch enterprises — delivering the kind of proactive, personalised service that larger firms rarely offer.

Our team of chartered accountants and financial advisors brings together decades of cross-industry experience. We don't just file returns and close books — we ask the questions that unlock opportunity.

Proactive, not reactive
Transparent pricing, always
Your dedicated account manager
ICASL & CIMA qualified team
Work With Us
How It Works

From first call to
lasting partnership

01

Free Consultation

A no-obligation 30-minute call to understand your business, your challenges, and your goals.

02

Tailored Proposal

We design a service package and clear fee structure that fits your exact requirements.

03

Seamless Onboarding

Our team takes over your financials smoothly, with minimal disruption to your day-to-day.

04

Ongoing Partnership

Regular reviews, proactive advice, and a dedicated point of contact — always in your corner.

Client Stories

What our clients say

"CAS completely transformed how we manage our finances. Their proactive tax advice saved us over LKR 800,000 in our first year. I can't recommend them highly enough."

RW
Ruchira Wijesekara Director, TechNova Lanka

"As a growing hospitality business, we needed more than just number crunching. CAS provided strategic guidance that helped us expand to three new locations confidently."

AM
Amali Mendis CEO, The Coco Group

"The team's response time is incredible — queries answered within hours, not days. They genuinely feel like an in-house finance department for a fraction of the cost."

SP
Sanjaya Perera Founder, Apex Imports
Get In Touch

Let's talk about
your finances

Ready to take control of your financial future? Reach out and one of our advisors will get back to you within 24 hours.

Office No. 669, Galle Road, Wadduwa