Introduction
Managing personal income tax in Sri Lanka has become more complex in recent years due to changes in the Inland Revenue Act No.24 of 2017 and later amendments. Many employees, freelancers, and business owners struggle to understand how much tax they need to pay and how to prepare their Annual Income Tax Return (AITR).
To simplify this process, the FinTax LK mobile app was developed to help Sri Lankan taxpayers calculate taxes, track income, and prepare reports easily.
You can access the app here:
👉 https://app.taxcalculator.lk
Why Sri Lankan Taxpayers Need a Tax Calculator App
Many individuals face difficulties with:
- Calculating progressive income tax rates
- Managing multiple income sources
- Tracking Advance Personal Income Tax (APIT)
- Preparing AITR reports
- Understanding tax reliefs and deductions
Without proper tools, taxpayers may overpay taxes or face penalties from the Inland Revenue Department (IRD).
A dedicated tax calculator solves these issues.
Key Features of the FinTax LK Tax Calculator
1. Multi-Year Tax Calculation
The app supports multiple assessment years including:
- 2022/2023
- 2023/2024
- 2024/2025
- 2025/2026
- 2026/2027
This allows users to review previous tax years and plan future tax liabilities.
2. Income Source Tracking
The app allows users to record all income categories including:
Employment Income
- Salary
- Bonuses
- Director fees
- Pension income
Business Income
- Freelancing
- Consulting income
- Professional services
- Sole trader income
Investment Income
- Dividends
- Bank interest
- Rental income
- Royalties
Special Rate Income
- Capital gains
- Export service income
- Foreign remittances
This ensures your taxable income is calculated accurately. FinTaxLK_UserGuide
Built-in Cash Book for Financial Tracking
Another powerful feature is the cash book module, which helps users:
- Record daily income and expenses
- Monitor bank and cash balances
- Track financial transactions
This is especially useful for freelancers and small business owners.
Automatic Tax Report Generation
After entering income data, the app generates:
- Personal tax reports
- Income summaries
- Tax liability estimates
These reports can be used for filing your Annual Income Tax Return (AITR).
AI Tax Assistant
Premium users also receive access to an AI-powered tax assistant that can help explain:
- Tax reliefs
- Allowable deductions
- Tax rules under Sri Lankan law
This makes the app ideal even for people without accounting knowledge.
Free AITR Filing Support
One unique feature of the app is that Premium users receive free AITR filing support from a Chartered Accountant. FinTaxLK_UserGuide
This service alone can save taxpayers thousands of rupees.
Who Should Use This App?
This tax calculator is ideal for:
- Salaried employees
- Freelancers
- Consultants
- Small business owners
- Professionals
- Investors earning rental or dividend income
Download the Sri Lanka Tax Calculator App
If you want to simplify your personal tax management in Sri Lanka, start using the FinTax LK app today.
👉 Visit
https://app.taxcalculator.lk
and start your free trial today.

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