About TaxCalc.asia

Why This Exists

Most tax calculators are built for US or European tax systems. Freelancers in Asia have completely different rules — TRAIN Law, PPh Final, Form B, Section 44ADA — and almost no free tools cover them. This project fills that gap by implementing each country's actual tax brackets, deductions, and regime options in a simple, instant calculator.

What We Cover

How the Calculations Work

Each country's tax engine is implemented from publicly available government regulations and updated for 2026. The calculators use the actual brackets, deduction rules, and regime comparisons published by each country's tax authority — not approximations. When official tax circulars or budget announcements change the rules, the calculators are updated within weeks.

Every calculator page cites its official sources so you can verify the numbers yourself. We maintain a detailed editorial policy documenting exactly where each data point comes from.

Content Sourcing & Updates

Tax regulations change frequently — new budgets, new circulars, new thresholds. We track changes from the following official sources:

• Philippines — Bureau of Internal Revenue (BIR) revenue regulations
• Indonesia — Direktorat Jenderal Pajak (DJP) and UU HPP regulations
• Malaysia — Lembaga Hasil Dalam Negeri (LHDN) guidelines
• Thailand — Revenue Department (RD) announcements
• Vietnam — General Department of Taxation (GDT) circulars
• India — Income Tax Department and annual Finance Acts

If you spot an error or an outdated rate, let us know and we'll investigate and fix it promptly.

Why Trust These Numbers

Every calculation is based on published government tax tables and regulations. We don't estimate, guess, or approximate. The code that powers each calculator is a direct implementation of the official rules — bracket thresholds, deduction formulas, and regime criteria as published by each country's tax authority. When official sources disagree or are ambiguous, we note the discrepancy and explain our approach.

Your Privacy

All tax calculations run client-side in your browser. We don't store, transmit, or process your income data on any server. There are no analytics scripts tracking your financial information. Enter your numbers, see your results, close the tab.

Not Professional Tax Advice

TaxCalc.asia provides estimates based on standard tax rules for typical freelance situations. It doesn't cover every edge case, exemption, or personal circumstance. If your situation is complex — multiple income sources, cross-border taxation, business entities — consult a qualified tax professional in your country. If you find a discrepancy with official calculations, email us and we'll fix it.