All required fields indicated with an asterisk (*) must be filled The main tax authority in sri lanka is the inland revenue department (ird), which guarantees equitable revenue collection, encourages voluntary compliance, and supports national development projects by means of funding. But the process can feel confusing — especially with online systems, pin codes, and changing deadlines This guide from taxcalculator.lk breaks down everything you need to know to file your taxes online in sri lanka, quickly and correctly. Find the complete list of inland revenue department (ird) regional offices in sri lanka including addresses, phone numbers, and email contacts for colombo, gampaha, kandy, jaffna, and more. The inland revenue department (ird) has extended the deadline for filing income tax returns for the year of assessment 2024/2025 to 31 december 2025, in response to disruptions caused by cyclonic storm ditwah and adverse weather conditions affecting several regions of sri lanka.
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