About CALCLK
Sri Lanka's trusted personal finance toolkit, built to help you make informed financial decisions.
Our Mission
CALCLK was created to provide Sri Lankans with free, accurate, and easy-to-use financial calculators. We believe everyone deserves access to tools that help them understand their finances better.
Our calculators are built using official gazette data and are regularly updated to reflect the latest regulations. We prioritize accuracy, transparency, and user experience in everything we build.
Our Values
Show Your Work
Every result shows the instrument, formula, and inputs behind it
Free Access
No registration required for basic tools
Privacy First
Calculator inputs stay on your device — no sign-in needed for basic tools
Source Transparency
Clear references to public sources and assumptions
Data Sources
Our calculators reference publicly available materials including:
- Sri Lanka Government Gazette notifications
- Central Bank of Sri Lanka (CBSL) publications
- Inland Revenue Department guidelines
- Sri Lanka Customs regulations
- Securities and Exchange Commission (SEC) data
References may change over time and may not reflect exemptions, concessions, or case-specific determinations. Always verify with the relevant authority or a licensed professional for official use.
Site Operations
calcLK's hosting, security, performance updates and uptime monitoring are managed by Optimize Manager, a UK-registered website operations service that keeps every calculator fast, accurate and available.