The year 2025 brings important changes to Sri Lanka’s tax landscape, following updates in the national budget and tax laws. Staying informed about these changes is crucial for individuals and businesses to remain compliant and avoid penalties. This guide covers the essentials of income tax in Sri Lanka, including the latest tax brackets, who is liable to pay, how to file returns, and tips to avoid common filing mistakes.

What is Income Tax in Sri Lanka?

Income tax in Sri Lanka is a direct tax imposed on the income earned by individuals and entities. Administered by the Inland Revenue Department (IRD), it applies to various types of income, including salaries, business profits, dividends, and other earnings sourced both locally and, for residents, globally.

The tax system aims to generate revenue for public services while offering reliefs and deductions to eligible taxpayers.

Who is Liable to Pay Income Tax?

You must pay income tax in Sri Lanka if:

• Your annual taxable income exceeds the tax-free allowance of LKR 1,800,000.
  
• You are an individual, company, partnership, or other taxable entity earning income sourced in Sri Lanka.
  
• You are a Sri Lankan resident, subject to tax on global income, or a non-resident earning income within Sri Lanka.
  

Understanding your tax liability early helps avoid compliance issues and penalties. Now, let’s talk about the tax rates for each of these categories.

Income Tax Rates & Brackets for 2025

Sri Lanka’s income tax for 2025 features revised tax brackets designed to ease the burden on lower-income earners while applying progressive rates to higher incomes.

1. Individual Income Tax Rates

Effective from April 1, 2025, individuals earning income in Sri Lanka are subject to the following tax Brackets:

Taxable Income (LKR)	Tax Rate (%)
First 1,000,000 After 1,800,000 relief	6%
Next 500,000	18%
Next 500,000	24%
Next 500,000	30%
Balance	36%

Note: 

• The tax-free allowance has been increased to LKR 1,800,000 annually, effective from April 1, 2025.
• The maximum income tax rate applicable to the following gains and profits is 15%
  • The gains and profits earned or derived from any service rendered in or outside Sri Lanka to any person to be utilized outside Sri Lanka, where the payment for such services is received in foreign currency and remitted through a bank to Sri Lanka (Service Exports).
  • The gains and profits earned or derived from any foreign source where such gains and profits are earned or derived in foreign currency and remitted through a bank to Sri Lanka (Foreign Sources).

2. Corporate Tax Rates

The current standard corporate income tax rate is 30% for all companies in Sri Lanka, except that the special tax rate applies to the following businesses:

(a) Gains and profits from conducting betting and gaming = 45% 

(b) Gains and profits from the manufacture and sale or import and sale of any liquor or tobacco product = 45%

(c) Gains and profits from the export of any liquor or tobacco product (normal income tax rate) = 30%

(d) Gains and profits from Service Exports (similar to conditions as mentioned above) = 15% 

(e) Gains and profits from Foreign Sources (similar to conditions as mentioned above) = 15%

These rates apply to companies conducting business activities within Sri Lanka. Inland Revenue Department

3. Resident vs. Non-Resident Taxation

• Residents: Individuals who are considered residents for tax purposes are taxed on their worldwide income.
  
• Non-Residents: Non-resident individuals are taxed only on income sourced within Sri Lanka.
  

Note: The determination of residency status is based on specific criteria set by the Inland Revenue Department.

4. Withholding Tax / Advance Income Tax (AIT) rate 

• Interest or discounts paid = 10% 

**Based on the revision of individual income tax rates and the AIT rate, the Advance Personal 

Income Tax (APIT) Tables and withholding tax circulars will be issued in due course.

Estimate your tax liability instantly using the Sri Lanka tax calculator at TaxPro.lk

Reliefs & Deductions

Taxpayers can claim several reliefs and deductions to reduce their taxable income

For Individuals

• Personal Relief:
  
  • Sri Lankan individual taxpayers (except trustees, executors, or those deriving gains from investment assets) enjoy a personal relief of LKR 1,800,000 annually
    
• Qualifying Payments & Special Deductions:
  Individuals can also claim deductions for certain types of expenses or contributions. These are subject to limits and include:
  
  • Donations to approved charities or government institutions
    
  • Contributions to the President’s Fund
    
  • Investments or expenditure on film production (cost not less than LKR 5 million)
    
  • Construction or upgrading of cinemas within specified cost ranges (up to LKR 25 million for new builds, up to LKR 10 million for upgrades)
    
• The maximum deductible amount is the lower of:
  
  • One-third of the individual’s taxable income, or
    
  • LKR 75,000.
    
• Rent Relief on Investment Properties:
  Resident taxpayers earning rental income from investment assets may deduct 25% of that rental income. Alternatively, they may claim actual expenses incurred on maintenance, repairs, or depreciation, whichever is more beneficial
  

For Companies

• Qualifying Payments & Exemptions:
  Companies are eligible to deduct certain payments similar to individuals. These include:
  
  • Donations to approved charities or government institutions
    
  • Contributions to the President’s Fund
    
• The deduction is limited to the lower of:
  
  • 20% of the company’s taxable income, or
    
  • LKR 500,000
    
• Foreign Currency Income Exemptions:
  Companies earning and remitting foreign currency income, such as from export services or foreign-sourced services, are largely exempt from income tax. The goal is to encourage companies to bring in foreign currency to Sri Lanka

How to File Income Tax in Sri Lanka

Taxpayers have two primary options for filing income tax returns in Sri Lanka: online filing through the IRD e-Services portal and manual filing using paper forms. Both methods are officially accepted, but online filing is increasingly encouraged due to convenience and faster processing.

1.  Online Filing via IRD e-Services Portal

• Registration: Taxpayers must first register on the IRD’s e-Services portal by creating an account. This requires your Taxpayer Identification Number (TIN) and other personal or business details.
  
• Filing Process: Once registered, you can log in anytime to complete and submit your income tax return electronically. The portal guides you through filling out relevant forms, including income details, deductions, and relief claims.
  
• Payment: The system allows you to calculate your tax payable and make online payments via designated payment gateways, reducing the need for physical visits.
  
• Acknowledgement: Upon submission, you receive an electronic acknowledgment receipt confirming your filing, which serves as proof of submission.
  
• Benefits: Faster processing, reduced errors through system validations, easy access to past filings, and the ability to track payment status.
  

2.  Manual Filing Using Paper Forms

• Obtaining Forms: Paper tax return forms are available at IRD offices or can be downloaded from the IRD website.
  
• Filling Out Forms: Taxpayers must carefully complete the appropriate income tax forms by hand or by typewriter, including all necessary schedules and declarations.
  
• Submission: Completed forms must be physically submitted at the designated IRD office before the filing deadline.
  
• Payment: Tax payments are typically made separately, either at banks authorised by the IRD or via cheque. Proof of payment should accompany the return.
  
• Processing Time: Manual submissions generally take longer to process due to manual data entry and physical handling.
  
• Risks: Higher chances of errors or lost forms; taxpayers must retain copies and receipts as proof.

Additionally, taxpayers must submit a Statement of Estimated Tax (SET) annually by 15 August, estimating their tax liability for the year.

Income Tax Deadlines in Sri Lanka

1. Statement of Estimated Tax (SET)

The Statement of Estimated Tax (SET) is a mandatory annual declaration submitted to the Inland Revenue Department by taxpayers who expect to have a tax liability for the upcoming assessment year.

• Purpose: It informs the IRD of the estimated amount of income tax you anticipate owing based on your projected income.
  
• Who must file: Individuals, companies, and other taxable entities whose estimated income exceeds the tax-free threshold.
  
• When to file: The SET must be submitted by August 15 each year, ahead of the relevant assessment year.
  
• Why it matters: The tax you estimate here forms the basis for your quarterly tax payments during the year. Failing to submit the SET on time may result in penalties or loss of certain payment privileges.
  

b.Quarterly Payments

Sri Lanka’s income tax system requires taxpayers to pay their estimated tax liability in four instalments throughout the assessment year:

• Schedule:
  
  • 1st instalment: August 15
    
  • 2nd instalment: November 15
    
  • 3rd instalment: February 15
    
  • 4th instalment: May 15
    
• Who pays: All taxpayers who have submitted a Statement of Estimated Tax or have a tax liability exceeding the threshold.
  
• Calculation: Each instalment generally represents 25% of your total estimated tax liability declared in the SET.
  
• Importance: Making these timely payments helps taxpayers avoid large lump-sum payments at year-end and reduces penalties for late payment.
  
• Penalties: Missing or delaying quarterly payments can result in fines and interest charges on overdue amounts.
  

C. Final Income Tax Return 

After the end of the assessment year, taxpayers must file their final income tax return reporting their actual income and tax liability:

• Deadline: The completed return must be submitted by November 30 of the year following the end of the tax period. For example, income earned in 2025 must be reported by November 30, 2026.
  
• Purpose: This return reconciles the estimated tax paid through quarterly instalments with the actual tax due based on your audited income and deductions.
  
• Additional payment or refund: If your final tax liability is higher than the installments paid, you must pay the balance by this deadline. If you overpaid, you may claim a refund.
  
• Documentation: Taxpayers must keep relevant records, receipts, and supporting documents in case of audit or verification by the IRD.
  
• Penalties: Late filing or underreporting can lead to fines, interest, or further investigations.

Common Mistakes to Avoid

• Missing the Statement of Estimated Tax deadline, leading to penalties.
  
• Underestimating quarterly tax instalments results in interest charges.
  
• Incorrectly calculating taxable income or missing relief claims increases tax liability.
  
• Failing to register or file timely may cause fines or audits.
  
• Neglecting to keep proper records for income and deductions.
  

Proper tax planning and timely filing are essential for compliance and peace of mind.

Tools & Resources

• Visit the official Inland Revenue Department (IRD) website for forms, guides, and updates.
• Use our Sri Lanka Income Tax Calculator to estimate your tax liability easily.

FAQs

• What is the financial year in Sri Lanka?
  In Sri Lanka, the financial year runs from 1st April to 31st March of the following year.
• What is the income tax rate in Sri Lanka for 2025?
  Tax rates range from 6% to 24% depending on income slabs above the LKR 1.8 million allowance.
• Who is liable to pay income tax?
  Individuals and companies earning above the threshold or receiving taxable income sourced in Sri Lanka.
• How to calculate income tax in Sri Lanka?
  Calculate taxable income by deducting reliefs from gross income, then apply the progressive rates. Use the TaxPro.lk tax calculator to calculate your income tax.
• What is the tax-free threshold for 2025?
  LKR 1,800,000 annually (LKR 150,000 per month).
• How to pay tax online in Sri Lanka?
  Use the IRD e-Services portal to file returns and make payments electronically.