Thai Tax for Villa Owners — A Plain-English Guide

The short version. If you rent out a villa in Thailand you will normally face three layers of tax: (1) personal income tax on the net rental profit, (2) annual Land & Building Tax on the property itself, and (3) transaction-level taxes when you buy or sell. VAT only applies once your rental revenue passes THB 1.8 M per year, and Specific Business Tax mostly affects short-hold sales. Below is what each one really looks like in practice.

1. Personal Income Tax (PIT) on rental income

Rental income is treated as Category 5 income under the Thai Revenue Code. You can either deduct a flat 30% as standard expenses or claim actual expenses (with receipts). Net profit is then taxed at progressive rates from 0% up to 35% — the first THB 150,000 is tax-free, the next slabs rise at 5%, 10%, 15%, 20%, 25%, 30% and 35% for income above THB 5 M.

Non-resident owners (< 180 days in Thailand in a tax year) are still taxable on Thai-source rental income and must file a PND 90 / PND 91 by 31 March each year. Most of our owners engage a bilingual accountant — we're happy to introduce you to ours.

2. Land & Building Tax (annual)

Replaced the old House & Land Tax in 2020. For residential property used as a holiday rental, the rate is 0.02%–0.10% of the appraised value, tiered by value. The local amphur issues the bill each April. Your management company typically handles payment on your behalf and charges it back in your monthly owner statement.

3. Withholding Tax (on corporate tenants / agents)

If a Thai company pays you rent, they must withhold 5% at source and remit it to the Revenue Department. The withheld amount is credited against your annual PIT bill — keep the WHT certificates (ภ.ง.ด. 3) because they're evidence you've already pre-paid tax.

4. VAT — only above THB 1.8 M revenue

Short-term villa rental is considered a service. Once your 12-month rolling revenue tops THB 1.8 M, VAT registration is mandatory and you charge 7% on top of the nightly rate. Many of our luxury-tier owners cross this threshold; we re-model your pricing so the VAT doesn't crush your ADR.

5. Specific Business Tax (SBT) on sale

If you sell the villa within 5 years of buying, SBT of 3.3% of the sale price applies (plus a 0.5% stamp duty). Hold past 5 years and the 0.5% stamp duty alone replaces it. Worth planning around before you list.

6. The licensing question — Hotel Act vs. 30-night rule

Strictly speaking, Thailand's Hotel Act requires a hotel licence for any accommodation rented for less than 30 days. Enforcement is patchy on Koh Samui and most single-villa owners operate with a grey-area 30-night workaround or a consolidated licence via a management company. We'll walk you through the three legally-clean structures on your onboarding call.

What we handle for you

• Monthly accrual of Land & Building Tax and VAT (if applicable) inside your owner statement.
• Quarterly PND 3 / PND 53 filings for any WHT we deduct from your contractors.
• Annual PND 90 preparation with our accountant partner, for a flat fee.
• Bookkeeping and receipts filed in your owner portal for audit-ready records.

Tax in Thailand isn't as complicated as the internet suggests — it's just unfamiliar. The combination of a competent bilingual accountant and clean monthly bookkeeping removes 99% of the risk.

Disclaimer: this is general guidance, not personalised tax advice. Please consult a qualified Thai tax adviser before acting. Mr Property Siam can introduce you to several accountants we work with.