Sri Lanka Individual Income Tax Calculator 2023/24 — Free Online IIT Wizard for Residents & Non-Residents

IIT Wizard — 2023/24

Individual Income Tax Wizard — Y/A 2023/24

Corrected calculation: Taxable = Assessable − Total Deductions (once). Tax computed only on Taxable income.

Taxpayer details & choose income sources

Full name

Used for printable summary.

TIN (optional)

If available, enter TIN.

Year of Assessment

Residency / Citizenship

Residency affects personal relief and remittance exclusions.

Select income sources to include

Employment Business (local freelancing) Remittances / Exports Investment Other

Local freelance paid in LKR (local clients) → Business. Foreign freelance paid in foreign currency and remitted → Remittances (may be excluded if evidence supplied).

Schedule 1 — Employment

Guide: If you have a T10 provide annual salary and APIT withheld. If no T10, enter monthly salary and months employed; the widget estimates APIT (for preview only). Estimated APIT does not apply personal relief — personal relief is applied once at final computation.

I have a T10 (employer APIT certificate)

Monthly salary (LKR)

Months employed (1–12)

Bonus (year) (LKR)

Other employment income (LKR)

Estimated APIT total	0
Estimated APIT on salary	0
Estimated APIT on bonus/other	0

APIT estimate excludes personal relief here; personal relief applied once in final computation to avoid duplication.

Schedule 2 — Business (local freelancing)

Local freelancing / business income in LKR. Use activity codes if available.

Remittances / Export-of-services (foreign freelance)

To exclude foreign receipts they must meet the tests & have documentary evidence (invoice/platform payout, bank SWIFT/advice, client confirmation). If evidence missing, amounts treated as taxable.

Schedule 3 — Investment

Interest, dividend, rent. Dividend with Final WHT is treated as not assessable (final WHT shown as credit).

Gross interest (LKR)

Interest currency

Gross rent (LKR)

Net rent (included)	0
Gross rent	0
25% deduction	0

Dividend (LKR)

Dividend subject to Final WHT (15%)

Schedule 4 — Other

Schedule 5 — Reliefs

Reliefs explanation

Rent relief: 25% of gross rent (internally applied as a deduction).
Solar relief: For residents only (demo cap LKR 600,000). Enter solar expenditure — included as a deduction.
Qualifying payments: Charitable/approved payments — enter gross amount.
Personal relief: Standard personal relief (shown read-only). Important: personal relief is applied once during the final computation (Taxable = Assessable − Total Deductions). Do not subtract it earlier.

Rent gross for relief purposes (LKR)

Solar expenditure (resident only) (LKR)

Qualifying payments (LKR)

Personal relief (readonly) (LKR)

Schedule 7 — APIT / WHT credits

APIT and WHT credits reduce tax liability. Enter your installments (Q1–Q4) and final payment if any.

APIT — Salary portion (LKR)

APIT — Bonus portion (LKR)

APIT — Total (LKR)

WHT on interest (credit) (LKR)

Final WHT on dividend (readonly) (LKR)

Other manual credits (LKR)

Q1 (LKR) Q2 (LKR) Q3 (LKR) Q4 (LKR)

Final payment (LKR)

Review & Compute

Important (how tax is computed)

Assessable Income = sum of included income sources (employment, business, investment, other) after item-specific adjustments (e.g., rent 25% deduction is handled below).
Total Deductions = Rent deduction (25%) + Solar relief (if resident) + Qualifying payments + Personal relief.
Taxable Income = Assessable Income − Total Deductions (applied once). The tax is computed on this Taxable Income only.
Tax computed by slabs → Total Tax. Credits (APIT, WHT, Final WHT, installments) reduce tax to give Balance payable / Refund.

Assessable income (preview)

Assessable Income	0
Employment	0
Business (SL-source)	0
Investment (SL-source)	0
Other (SL-source)	0

Deductions & Reliefs

Total Deductions	0
Rent relief (25%)	0
Solar relief	0
Personal relief	0
Qualifying payments	0
Taxable Income	0

Tax & credits

Range	Taxable	Rate	Tax
Total Tax
Tax credits
Balance payable / Refund

Credits detail

Remittances / Export-of-services (excluded or flagged)

None

IRD cage mapping

Disclaimer: This calculator is for information and guidance only. It does not replace professional tax advice. For filing your return consult a tax professional.

Free Sri Lanka Individual Income Tax Calculator — 2023/24

Are you trying to calculate your individual income tax (IIT) for the Year of Assessment 2023/24 in Sri Lanka?
Use our interactive IIT Wizard — a comprehensive online calculator built using the latest Inland Revenue Department (IRD) guidelines.

This tool is perfect for:

Employees with or without T10 (APIT certificate)
Freelancers and business owners
Individuals earning rent, dividends, or interest income
Residents and non-residents (citizens and foreigners)
Service exporters or those receiving foreign remittances

With each step, the wizard explains the rules, applies reliefs correctly (personal, rent, solar, qualifying payments), and gives a final tax computation summary and IRD cage mapping.

🧮 Key Features

✅ Designed using IRD Guide to IIT 2023/24
✅ Resident / Non-resident / Citizen status selector
✅ Handles employment income with or without T10
✅ Calculates APIT, WHT, and installment payments
✅ Rent 25% relief, solar and qualifying payment deductions
✅ Foreign remittance & freelance income (with evidence-based exemption)
✅ Business activity code reference (2018 list included)
✅ Real-time calculation of assessable → taxable → tax payable
✅ Printable summary with IRD cage mapping
✅ Disclaimer: for guidance only — seek professional advice before filing

After embedding the calculator HTML code, add these rich content paragraphs to target SEO keywords:

How to Use the Sri Lanka Income Tax Calculator

Enter your personal and residency details.
Select your income sources — employment, business, investment, or remittances.
Enter your income and deductions.
The tool automatically applies Sri Lanka tax slabs (0%–36%) for 2023/24.
Download or print your summary for record-keeping.

Understanding Sri Lanka Individual Income Tax (IIT)

Individual income tax applies to residents on worldwide income and to non-residents on Sri Lanka–source income.
For 2023/24, the first LKR 1,200,000 of taxable income is exempt, with progressive tax rates thereafter.
The calculator reflects official IRD computations and automatically handles APIT, WHT, rent, and reliefs.

Freelance & Export-of-Service Income

If you’re a freelancer earning from overseas clients and your income is remitted through a Sri Lankan bank in foreign currency, such export-of-service income can qualify for exemption under the Inland Revenue Act, Section 7(2)(b).
The calculator helps you identify this condition automatically.

Disclaimer

This tool is for educational and informational purposes only. It does not constitute professional tax advice.
For filing or compliance support, please contact MAPA Associates (Chartered Accountants) — specialists in tax, accounting, and company secretarial services in Sri Lanka.