Quick and Easy Tax Calculation for Individuals

Accurately calculate and file your taxes with Sri Lanka’s trusted tool, backed by expert support for a hassle-free experience for everyone!

Trusted by over 5000 businesses in Sri Lanka

4.9 Rating
(800+ cutomer reviews)

We’ve got you covered

No manual entry! Upload your T10 document, and watch as the data seamlessly fills into the relevant fields of your application. Simplify your tax process and save time with our smart automation


Our tool ensures accurate tax calculations while maintaining full compliance, making tax filing easy and stress-free. With a step-by-step process and expert support available anytime, filing your taxes has never been this simple or precise.


When you need expert guidance, simply book a session with one of our tax professionals. We’re here to offer personalized support, making sure your tax computation is accurate and hassle-free.

Start using our tax tool with no initial costs, giving you the freedom to explore without any commitment. Whether your returns are simple or complex, enjoy accurate and efficient tax filing from the very beginning—completely risk-free


Easily create and send auto-generated, compliance-ready tax emails or letters. Request bank statements, balances, and tax details with just a few clicks. It’s a simple, quick way to handle compliant communication with your bank.

No Manual Entries

No manual entry! Upload your T10 document, and watch as the data seamlessly fills into the relevant fields of your application. Simplify your tax process and save time with our smart automation

Accurate Calculations

Our tool ensures accurate tax calculations while maintaining full compliance, making tax filing easy and stress-free. With a step-by-step process and expert support available anytime, filing your taxes has never been this simple or precise.

Personalized Support

When you need expert guidance, simply book a session with one of our tax professionals. We’re here to offer personalized support, making sure your tax computation is accurate and hassle-free.

No Cost to Get Started

Start using our tax tool with no initial costs, giving you the freedom to explore without any commitment. Whether your returns are simple or complex, enjoy accurate and efficient tax filing from the very beginning—completely risk-free

Ready to send Letters/ Emails

Easily create and send auto-generated, compliance-ready tax emails or letters. Request bank statements, balances, and tax details with just a few clicks. It’s a simple, quick way to handle compliant communication with your bank.

3 easy steps to Calculate and File Your Taxes

1

Enter Your Details

Quickly input your income, expenses and other financial details.

2

Review and Calculate
Get an accurate tax calculation with deductions applied.

3

File with Confidence

Submit your taxes online with just a few clicks

Why Simplebooks Tax Tool for Effortless Tax Calculation?

Achieve accuracy, save time, and simplify your tax filing with our powerful, user-friendly tool—backed by expert support every step of the way

Trusted by Thousands

Expertise in Sri Lankan Taxes

Time Saving

100% Compliance Guaranteed

Help us, help you by being one of 4500+ businesses in Sri Lanka, who have relied on us to register their business.

Frequently Asked Questions

Is my data secure when using the Simplebooks Tax Tool?

Yes, your data is protected with advanced encryption and security protocols, ensuring your sensitive information remains private and secure.

Is the Simplebooks Tax Tool suitable for personal tax filings?

Yes! Our tax tool is tailored specifically for individuals, making it easy to calculate and file your personal taxes with accuracy and ease.

Is the Simplebooks Tax Tool compliant with Sri Lankan tax laws?

Yes, our tax tool is fully compliant with Sri Lankan tax laws, ensuring your tax filings are accurate and up-to-date with the latest regulations.

What kind of support can I expect if I have questions during the process?

We offer expert support through chat, email, or phone. Our team is here to guide you at any step of the filing process, ensuring a smooth experience.

How long does it take to file my taxes using Simplebooks?

The process is designed to be fast and easy. Once your financial details are entered, most users can calculate and file their taxes in just a few minutes.

How accurate are the tax calculations?

Our tax tool is regularly updated to align with the latest Sri Lankan tax laws and regulations, ensuring the highest level of accuracy in calculations.