Expat Tax Thailand

24/09/2026

Missed a Thai tax filing deadline?

In many cases, you can still put things right before it becomes a bigger problem.

Our updated guide explains what happens if you file late, including:

✅ Whether you can still submit a return
✅ Late filing fines and the 1.5% surcharge
✅ What happens if no tax is due
✅ How to deal with previous tax years
✅ What to do if several years are outstanding
✅ What happens if the Revenue Department has already contacted you

If you are worried about a missed return, the first step is simply to understand where you stand and what needs to happen next.

Missed a Thai tax filing deadline? Find out how to file late, what fines and surcharges may apply and how to deal with previous years.

22/09/2026

Thailand is working towards OECD membership, with a target of 2028.

The process goes well beyond tax. It could affect regulation, investment, financial markets, business conduct and the way Thailand connects with international tax-reporting systems.

For expats with cross-border income, investments or other financial interests, the important question is what these changes could mean in practice.

Thailand is seeking OECD membership. Learn why it wants to join and what closer international regulatory alignment could mean for expats.

04/09/2026

If you live in Thailand and receive income from overseas, a Double Tax Agreement may affect which country can tax that income and how double taxation is relieved.

Our latest guide explains how Thailand’s DTAs work, what ‘taxable only in’ and ‘may be taxed in’ mean, how foreign tax credits are calculated and what records you may need when filing in Thailand.

31/08/2026

What income is taxable in Thailand — and what isn’t?

It is not simply a question of where your money is paid or which bank account it goes into.

Our new guide explains how Thailand treats salaries, pensions, investments, rental income, business income and foreign-sourced income, and the important difference between assessable income, taxable income and tax actually payable.

Read the guide at the link below.

Understand Thai tax, assessable income, Section 40, Thai and foreign-source income, pensions, investments and filing rules.

27/08/2026

Thailand’s SEC has published draft rules for locally established Bitcoin and Ethereum ETFs.

The proposals could allow investors to gain crypto exposure through funds listed on the Stock Exchange of Thailand, with new rules covering custody, investor protection and tax treatment.

Read our latest update on what this could mean for expats in Thailand.

Thailand’s SEC has published draft rules for Bitcoin and Ethereum ETFs. See what the proposals could mean for expats and Thai tax.

26/08/2026

Using an overseas document in Thailand is not always as simple as presenting the original.

Death certificates, wills, powers of attorney, marriage certificates and court documents may need to be authenticated, legalised and translated before they can be used here.

Thailand's rules are also changing. From 28 February 2027, the Apostille Convention should simplify the process for many public documents.

Our new guide explains what applies now, what is changing and the common mistakes that can cause delays.

Learn how to authenticate, legalise and translate overseas documents for use in Thailand, including the new Apostille rules from 2027.

22/08/2026

If you live in Thailand, a conventional will is not the only document worth thinking about.

A Thai living will can record certain healthcare wishes in case you become seriously ill and are no longer able to communicate them yourself.

Learn how living wills work in Thailand, whether foreigners can make one and how to record and communicate your end of life healthcare wishes.

21/08/2026

UK Inheritance Tax rules have changed, and the impact on British expats in Thailand can vary significantly.

The biggest issues include the new residence-based rules, the IHT tail after leaving the UK, UK pensions from April 2027 and the restricted spouse exemption for some British–Thai couples.

Our new guide explains what has changed and what you may need to review.

UK inheritance tax rules have changed. See what the new residence, pension and spouse rules mean for British expats living in Thailand.

30/07/2026

Wise has updated its Thailand announcement.

The planned 3 August 2026 transition for existing pre-21 January 2026 users has been delayed. Wise now says these customers can continue using their accounts as usual until October 2026, with additional verification expected in September.

The changes have been delayed, not cancelled.

We have updated our article with the revised timeline and what it may mean for expats using Wise in Thailand.

Wise’s Thailand planned update in August 2026 changes how foreign currency is handled. See what it means for remittance and expat tax.

23/06/2026

🇹🇭 🇳🇱 𝐍𝐞𝐰 𝐍𝐞𝐭𝐡𝐞𝐫𝐥𝐚𝐧𝐝𝐬–𝐓𝐡𝐚𝐢𝐥𝐚𝐧𝐝 𝐓𝐚𝐱 𝐓𝐫𝐞𝐚𝐭𝐲

Thailand and the Netherlands have signed a new tax treaty, but it is not yet in force.

We have been receiving questions from concerned Dutch expats and people planning a move to Thailand about what the treaty could mean for them.

In the article below, we answer seven key questions about pensions, AOW, Thai filing, double tax relief, remittances and future planning.

Seven key questions Dutch expats are asking about the new Netherlands–Thailand tax treaty, answered clearly.