Thailand Land & Building Tax 2026 — What Owners Overlook
The Land and Building Tax is an annual tax owed by whoever owns or possesses the property on 1 January. Many assume it is trivial, but a few details — especially for idle land — can cost far more than expected.
- •Primary home gets a partial exemption
- •Vacant land: commercial rate + 0.3% every 3 years (cap 3%)
- •Late: up to 40% penalty + 1%/month
- •2026 deadline extended to ~June
Rates by use type
Residential use carries the lowest rates, and an individual primary home (owner registered in the house book) gets a partial exemption. Agricultural land is given relief; commercial and other uses are taxed higher, generally 0.3–0.7% of the assessed base.
Vacant land — the overlooked trap
Idle land is taxed at the commercial rate, and if left vacant beyond 3 years the rate rises 0.3% every 3 years, capped at 3% per year. Owners of empty plots should plan a genuine use to reduce the long-term burden.
Pay late, pay more
Late payment can incur up to a 40% penalty plus roughly 1% per month surcharge. For 2026 the deadline was extended (around June). Check the assessment notice from your local municipality.
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