English interface

Thai section 40(1) and 40(2) income tax

Combine employment and qualifying service income using their shared expense cap.

Limited scopeHigh-impactTax year 2026 · Sections 40(1) and 40(2) only
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Only sections 40(1) and 40(2) for one taxpayer. Freelance/business income may instead be section 40(8), which is excluded, as are the alternative 0.5% method and other credits.

Enter values, then process to see the result.

How to use it

  1. Classify income before entering it.
  2. Enter annual income, confirmed allowances and withholding.
  3. Review the scope and estimated liability.

Important limitation

Only one taxpayer's sections 40(1) and 40(2). Section 40(8), alternative minimum tax, spouses and other credits are excluded.

The interactive form is fully localized in English.

Reviewed 2026-09-16; next review 2026-12-16.

The shared expense cap, progressive brackets and entered withholding credit have been checked. Section 40(8), the alternative 0.5% method, spouses and other credits are excluded.

Traceable review record

Review history

Site changelog

This is the recorded review history available in the repository, not an inferred release history. Dates are added only when evidence is recorded.

  1. Current review snapshot recorded

    The shared expense cap, progressive brackets and entered withholding credit have been checked. Section 40(8), the alternative 0.5% method, spouses and other credits are excluded.

    Method version: review-2026-09-16