About this Calculator

The MAPA Associates APIT (PAYE) Tax Calculator helps employees and professionals in Sri Lanka estimate their income tax liability under the Advance Personal Income Tax (APIT) system for the Year of Assessment 2025/26.

The calculation is based on the LKR 1,800,000 annual personal relief and the progressive tax slabs introduced by the Inland Revenue Department (IRD). It provides both annual and monthly tax estimates along with your effective tax rate.

This tool is ideal for payroll planning, salary negotiations, and understanding how much income tax is deducted each month under the APIT regime.

Disclaimer: This calculator is intended for general guidance only. Actual tax liabilities may vary based on allowances, exemptions, and current IRD updates.