Several important exemptions may reduce or eliminate your inheritance tax liability:
- Spousal exemption — the surviving spouse pays nothing.
- Estate under 100 million baht — if the total value doesn’t exceed the threshold, no tax is due.
- Deaths before the Act’s implementation (pre-2015) — estates from deaths before the law took effect are not taxed under it.
- Charities, public institutions, religious/educational entities — gifts to these bodies are exempt.
- International agreements or reciprocity — certain treaties or reciprocal arrangements may grant exemptions.


