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Calculators

Quick answers to the tax questions you have right now.

Income tax, PAYE, WHT, capital gains, rent, ETF and more — each tool runs on the same engine as TaxWise itself.

Calculators

Nine standalone tools. No account needed.

Each calculator runs the same logic that powers a TaxWise return — but for a single question, in isolation.

Most popular
Income tax (IIT)

Estimate your annual liability across salary, freelance, interest and investment income — with 2025/2026 reliefs applied.

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Monthly
PAYE / APIT

Compute monthly APIT for a salary and standard EPF deduction. For employers and employees double-checking the payslip.

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Y/A 2025/2026
Capital gains

Investment gains on listed and unlisted securities. Holding-period rules per §11A.

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Quick
WHT on payments

Sub-contractor 5%, rent 10%, interest 5%, services 14%. Pick the payment type, get the rate and the form.

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Self-employed
Quarterly installment

If you're self-employed: estimate your Q1–Q4 installments based on prior-year liability or current-year forecast.

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On exit
ETF / Gratuity

Stepped concessionary rates on terminal benefits. For employees leaving service.

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Landlords
Rent income

25% standard deduction on gross rent, plus actual expenses if better. For landlords with one or more properties.

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Cross-border
Foreign income & DTA

Convert foreign-currency receipts at CBSL rates and apply the right tax credit under the Sri Lanka–UK / US / Singapore DTAs.

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For businesses
VAT

Output VAT vs. input VAT, threshold check (Rs. 60M / quarter), schedule-by-schedule.

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Beyond the estimate

Free calculators. Full return in TaxWise.

These tools answer one question at a time. TaxWise imports your income, applies every relief, and produces cage-by-cage schedules ready for you to submit on the IRD portal.

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No account required to use calculators · Data stays in your browser

Income tax calculator

Estimate your 2025/2026 liability in 30 seconds.

Adjust salary, other income, and filer type. No data leaves your browser.

Free calculator
Estimate your 2025/2026 tax
Personal relief, rent relief, solar QP, and progressive slabs per the IRA Amendment 2025.
Annual salaryRs. 3,600,000
Rs. 600,000Rs. 12,000,000
Other income (interest, dividends, etc.)Rs. 240,000
Rs. 0Rs. 3,000,000
Rental income (gross)Rs. 0

25% rent relief applied to assessable amount.

Rs. 0Rs. 3,000,000
Investment asset gainsRs. 0

Taxed at 10% flat. Personal relief does not apply.

Rs. 0Rs. 5,000,000
Total assessable incomeRs. 3,840,000
Personal relief− Rs. 1,800,000
Taxable income (slab base)Rs. 2,040,000
Your final tax
Rs.282,000
Effective rate 7.3% · Rs. 218,400 less than 2024/25
6%First Rs. 1,000,000Rs. 60,000
18%Next Rs. 500,000Rs. 90,000
24%Next Rs. 500,000Rs. 120,000
30%Next Rs. 500,000Rs. 12,000
Special rates not modelled here: sin industry 45%, bank-remitted foreign/service income max 15%. Source: IRA Amendment Act No. 02 of 2025.

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Filing opens Apr 2026 · Final return for Y/A 2025/2026 due 30 Nov 2026.
Estimator disclaimer

Results follow the Inland Revenue Act and the 2025 Amendment for Y/A 2025/2026 but are not tax advice. Rounding, missing inputs, and simplified assumptions can change the final figure — only a filed return counts with IRD.