Sri Lanka’s tax landscape has changed significantly over the past year. Personal relief has increased, AIT on fixed deposits has doubled, IT/BPO companies now pay corporate tax for the first time, and from July 2026 a brand-new digital services VAT regime will affect anyone paying for Netflix, Spotify, AWS, or Microsoft 365.
Keeping track of all these changes — and knowing exactly how much tax you owe — can be overwhelming. That’s why GDP Consultants built a single, free hub of 19 IRD-compliant tax calculators covering everything from salary tax to crypto gains to vehicle import duty.
This guide walks through every calculator on TaxCalculator.lk, explains what each one does, and highlights the key 2025/2026 rule changes you need to know. No registration required — every tool is free to use.
Why Use These Calculators?
Sri Lanka’s Inland Revenue (Amendment) Act No. 02 of 2025, the VAT Amendment Act No. 04 of 2025, and the SSCL framework introduced a wave of changes effective from 1 April 2025, with more arriving from 1 July 2026. Whether you’re a salaried employee, a business owner, a landlord, an investor, or an overseas Sri Lankan managing assets back home, these tools give you an instant, accurate estimate based on the latest rates — so you can plan ahead instead of being surprised at filing time.
1. APIT / PAYE Income Tax Calculator
The most popular tool on the site. It calculates your Advance Personal Income Tax (APIT), formerly PAYE, using the full six-band IRD Table 01 structure for Year of Assessment 2025/2026.
Key 2025/26 update: The annual personal relief increased from LKR 1,200,000 to LKR 1,800,000 (LKR 150,000/month), effective 1 April 2025.
It handles:
- Monthly salary or annual income input
- Automatic 8% EPF deduction (or manual override)
- Qualifying payment deductions (up to ⅓ of net employment income)
- Mid-year joiners using IRD Table 05
- A full slab-by-slab breakdown showing exactly how much tax falls into each band (6%, 12%, 18%, 24%, 30%, 36%)
If you only use one calculator on this site, this is the one to bookmark.
2. VAT Calculator (18%)
A simple forward/reverse VAT calculator that lets you add VAT to a net amount or strip VAT out of a gross amount.
What’s new: The standard rate remains 18%, with an 8% reduced rate for specific goods. From July 2026, financial services VAT rises to 20.5%, and the VAT registration threshold drops from LKR 60Mn to LKR 36Mn per year.
Useful for invoicing, pricing, and checking whether a quoted price already includes VAT.
3. Corporate Income Tax (CIT) Calculator
Calculates corporate tax based on your business category and taxable profit.
The big change: IT/BPO companies, which previously enjoyed a 0% rate, now pay 15% CIT from 1 April 2025. Standard CIT remains 30%, SMEs with taxable profit up to LKR 5Mn pay 14%, and gaming/liquor/tobacco businesses face rates as high as 45%.
E-filing is now mandatory for all company types from Y/A 2024/25 — this calculator helps you estimate your liability before you file.
4. SSCL — Social Security Contribution Levy Calculator
The Social Security Contribution Levy (SSCL) is charged at 2.5% on turnover (not profit) exceeding LKR 120 million per quarter. This catches many businesses off guard because it applies even if the company is running at a loss.
The calculator accepts quarterly, monthly, or annual turnover figures, lets you deduct exempt supplies (exports, electricity, financial services), and shows your exact SSCL liability after the threshold deduction.
5. Withholding Tax (WHT) Calculator
Covers WHT on service fees, interest, rent, royalties, dividends, and contract payments — for both resident and non-resident payees.
Key update: WHT on interest/FD income for residents increased from 5% to 10% from April 2025. The calculator auto-fills the correct rate based on payment type, but allows manual override, and reminds you that WHT is due to the IRD by the 15th of the following month.
6. Dividend Tax Calculator
Handles two scenarios:
- Actual dividends — works out CIT first, then applies the 14% dividend WHT on the declared portion of after-tax profit, with support for splitting between multiple shareholders.
- Deemed dividends — checks whether a company has distributed at least the mandatory 25% of distributable profit within 12 months, and calculates the 14% WHT on any shortfall.
Since dividend WHT is a final tax, resident shareholders don’t need to declare it again in their personal returns — but companies need to get the distribution percentage right to avoid deemed dividend exposure.
7. Rental Income Tax Calculator
For landlords, this tool calculates net rental income after deductible expenses (repairs, rates, insurance, mortgage interest — but not capital improvements), combines it with your other annual income, applies the LKR 1.8Mn personal relief, and apportions the resulting tax liability specifically to your rental income.
This gives landlords a clear picture of their actual after-tax rental yield, not just gross rent.
8. Capital Gains Tax (CGT) Calculator
CGT in Sri Lanka is a flat 10% on the net gain from disposing of investment assets — secondary properties, listed and unlisted shares, and other investments.
The calculator automatically flags exempt assets — your primary owner-occupied residence and government securities/T-Bills — so you don’t accidentally calculate tax on a sale that isn’t taxable. It also reminds you that capital losses can only offset gains in the same year and cannot be carried forward.
9. Stamp Duty Calculator
Covers four transaction types with the rates updated as of January 2025:
- Property transfers — tiered: 3% up to LKR 1Mn, 4% on LKR 1–4Mn, 5% above LKR 4Mn
- Lease agreements — increased to 2%
- Mortgage bonds — flat 1%
- Gifts of immovable property — flat 4%
Enter the transaction value and select the type to get an instant duty estimate.
10. Vehicle Import Duty Calculator
Estimates the total landed cost of importing a vehicle, factoring in:
- 15% customs duty
- Excise duty (varies by engine capacity and fuel type — petrol, diesel, hybrid, or EV)
- 2.5% port and airport levy
- 18% VAT applied on top of all the above
EVs attract a much lower 10% excise rate compared to larger-engine petrol vehicles. This is an estimate only — actual duties depend on the specific HS code and current gazette notifications, so always confirm with Sri Lanka Customs before importing.
11. Fixed Deposit (FD) / AIT Calculator
Calculates your FD returns after Advance Income Tax (AIT) is deducted, supporting simple, monthly, and quarterly compounding.
Critical update: AIT on FD interest for residents doubled from 5% to 10% from 1 April 2025 (non-residents pay 15%). The calculator also checks your eligibility for self-declaration — if your total annual income from all sources is below LKR 1.8Mn, you can submit a form to your bank to stop AIT deduction entirely and avoid having your money tied up until refund season.
12. EPF / ETF Calculator
Breaks down the full statutory contribution structure:
- Employee EPF: 8%
- Employer EPF: 12%
- Employer ETF: 3%
Shows your monthly take-home before APIT, the total EPF pool building up in your name, and the total cost to your employer — plus an annual summary. Useful for employees checking their payslip and employers verifying their statutory obligations.
13. Employer Cost Calculator (Cost-to-Company) — NEW
A dedicated tool for employers and HR/finance teams budgeting for new hires. Enter a gross salary and allowances, and it instantly shows:
- EPF employer contribution (12%)
- ETF contribution (3%)
- Total monthly and annual Cost-to-Company (CTC) per employee
It also supports multi-employee calculations — enter your headcount and it totals the monthly and annual cost for your whole team. The headline takeaway: employer statutory contributions add 15% on top of gross salary, so a LKR 100,000 salary actually costs LKR 115,000/month before any bonuses.
14. Digital Services VAT Calculator (18%, from July 2026) — NEW
This is one of the most important new tools on the site. From 1 July 2026, non-resident digital service providers — Netflix, Spotify, AWS, Azure, Google Workspace, Microsoft 365, Adobe, Zoom, and similar platforms — must charge 18% VAT to Sri Lankan consumers.
The calculator includes pre-loaded pricing for popular services and lets you:
- See exactly how much extra you’ll pay per month and per year (for individual/B2C subscribers)
- Check the reverse charge treatment for VAT-registered Sri Lankan businesses (B2B), where the impact is cost-neutral since the VAT can be claimed as input tax
If your household or business runs on multiple subscriptions, this tool quickly shows the cumulative annual impact of the new rule.
15. Crypto Tax Calculator — NEW
Cryptocurrency is taxable in Sri Lanka under Capital Gains Tax at 10%. Every disposal — selling, swapping one crypto for another, or using crypto to buy goods/services — is a taxable event.
This calculator works out your net gain across multiple similar transactions (factoring in transaction fees), lets you combine the result with other capital gains or losses for the year, and applies the 10% CGT rate to the total.
Important reminder built into the tool: crypto losses cannot offset employment or business income, and cannot be carried forward — they can only offset other capital gains in the same year of assessment. From July 2026, 18% VAT also applies to crypto exchange service fees.
16. Late Filing Penalty Calculator — NEW
Missed the 30 November annual return deadline? This calculator gives you the exact cost of filing late.
The IRD penalty is the higher of:
- A flat LKR 50,000 minimum, or
- 5% of tax payable, plus 1% for every month of delay
On top of that, the IRD charges 2% per month interest on any unpaid tax. Enter your tax payable and your actual (or planned) filing date, and the tool calculates months overdue, the penalty amount, estimated interest, and your total amount due — with a visual meter showing the penalty as a percentage of your original liability.
17. Quarterly Tax Installment Calculator (SET) — NEW
The Statement of Estimated Tax (SET) requires self-employed individuals and companies with estimated annual tax of LKR 6,000 or more to make quarterly advance payments.
This calculator takes your estimated annual tax, subtracts expected APIT/WHT credits, and splits the balance evenly across the four quarterly deadlines:
- Q1 — 15 August
- Q2 — 15 November
- Q3 — 15 February
- Q4 — 15 May
It also shows the balance due on your annual return (30 November). Underpaying or missing an installment triggers 2% monthly interest on the shortfall, so getting these figures right matters.
18. VAT Registration Threshold Checker — NEW
Perhaps the most consequential change coming in 2026: the VAT/SSCL registration threshold drops from LKR 60 million to LKR 36 million per year (or LKR 9Mn per quarter) from 1 July 2026.
This tool takes your annual and quarterly taxable turnover and your business category (standard, exempt, export/zero-rated, or mixed supplies), then tells you:
- Whether you’re currently required to register (under the LKR 60Mn rule)
- Whether you’ll need to register from July 2026 (under the new LKR 36Mn rule)
- An estimate of your monthly VAT liability once registered
Thousands of SMEs that have never had to deal with VAT will fall into the net for the first time — this checker helps you find out now, rather than after a compliance notice arrives.
19. Net Salary / Take-Home Pay Calculator — NEW
A streamlined “what will actually land in my bank account” tool. Enter your basic salary, fixed allowances, other taxable benefits, and any non-cash benefits (vehicle, housing), and it calculates:
- Monthly EPF deduction (8%)
- Monthly APIT withholding (based on the updated LKR 150,000/month tax-free threshold)
- Total monthly take-home pay
- A full annual summary including your effective total deduction rate
This is the calculator most people will want to share with HR or use when comparing job offers — it converts a headline salary figure into the real number that matters.
How to Use These Calculators Together
Most users won’t just need one of these — they interact. For example:
- A landlord might use the Rental Income Tax Calculator (#7) alongside the APIT Calculator (#1) if they also have salary income.
- A small business owner approaching the new VAT threshold should check the VAT Registration Threshold Checker (#18), then use the VAT Calculator (#2) to model pricing once registered, and the SSCL Calculator (#4) if turnover is high enough.
- Anyone hiring staff should pair the Net Salary Calculator (#19) for the employee’s perspective with the Employer Cost Calculator (#13) for the business’s perspective — same numbers, two sides of the same transaction.
- Investors holding crypto, shares, or property should run the Crypto Tax (#15) and Capital Gains Tax (#8) calculators together, since combined gains and losses are netted off in the same Y/A.
Frequently Asked Questions
What is the APIT tax-free threshold for 2025/2026 in Sri Lanka? The personal relief is LKR 1,800,000 per year (LKR 150,000 per month), increased from LKR 1,200,000 effective 1 April 2025.
What is the standard VAT rate in Sri Lanka in 2025/2026? 18%. From July 2026, this also applies to digital services from non-resident providers, and the VAT registration threshold drops from LKR 60Mn to LKR 36Mn per year.
What is SSCL and what is the rate? The Social Security Contribution Levy is 2.5% on liable turnover exceeding LKR 120 million per quarter. It applies to turnover, not profit.
What is the AIT rate on fixed deposits now? AIT increased from 5% to 10% for resident individuals from 1 April 2025 (15% for non-residents). If your total annual income is below LKR 1,800,000, submit a self-declaration form to your bank to stop the deduction.
How is the late filing penalty calculated? The higher of LKR 50,000 minimum, or 5% of tax payable plus 1% for each month of delay from the 30 November deadline — plus 2% per month interest on unpaid tax.
What’s the total cost to hire an employee in Sri Lanka? Gross salary plus 12% employer EPF plus 3% ETF — a 15% overhead. A LKR 100,000 salary costs the employer LKR 115,000 per month.
Is cryptocurrency taxable in Sri Lanka? Yes — at 10% Capital Gains Tax. Every disposal (sale, swap, or purchase using crypto) is a taxable event.
What’s the Corporate Income Tax rate for IT companies now? IT/BPO companies pay 15% CIT from 1 April 2025, up from 0%. Standard CIT is 30%; SMEs with taxable profit up to LKR 5Mn pay 14%.
Get Expert Help from GDP Consultants
These calculators give you accurate, instant estimates — but every situation has nuances that a calculator can’t fully capture: structuring dividends efficiently, registering for VAT at the right time, claiming the right deductions, or negotiating a penalty reduction with the IRD.
GDP Consultants, Chartered Accountants and Tax Advisors, can help with:
- Personal and corporate tax return preparation and e-filing
- VAT registration and ongoing compliance (including the new digital services and threshold changes)
- Quarterly SET installment planning
- Crypto transaction reviews and IRD compliance
- Late filing and penalty negotiation support
👉 Book a consultation or explore all 19 free calculators at taxcalculator.lk/calculators.
This article is for informational purposes only and does not constitute tax advice. All figures are based on the Inland Revenue (Amendment) Act No. 02 of 2025, the VAT Amendment Act No. 04 of 2025, the SSCL Act, and 2026 Budget proposals. Always verify with IRD Sri Lanka or a qualified Chartered Accountant before filing.
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