Service guide
What legitimate tax planning in Thailand covers for individuals and companies, where the line to tax evasion sits, and how an engagement with a firm runs.
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Tax planning in Thailand means arranging your affairs, before the year runs and before transactions close, so that you pay what the law requires and nothing the law does not. It is forward-looking work: the decisions that matter are made before income arrives or a structure is set up, not when the return is due.
The work splits along one line. For individuals, it is mostly about residency and the timing of income. For companies, it is mostly about structure, incentives, and how profits move. Tax lawyers in Thailand and tax-focused advisory firms both do this work; which one fits depends on whether the question is legal interpretation or ongoing compliance.
Thai personal tax turns on residency. The Revenue Department treats you as a tax resident in any calendar year where you spend more than 180 days in Thailand, and a resident is taxed on Thai-source income plus foreign-source income brought into the country. That makes two questions genuinely plannable: when you become resident, and when foreign income becomes taxable, which can depend on residency and on when the money is brought into Thailand.
An advisor maps your income sources against those rules, checks whether a double tax agreement between Thailand and your home country changes the answer, and tells you what records to keep. The related compliance work, calculating and filing the annual return, sits with personal income tax services; planning is the step before it.
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International boutique law firm in Bangkok and Phuket, providing legal and tax services to investors, businesses, and private clients across Thailand
฿4,000–12,000 / hour
For a business, planning starts at setup and returns at every big decision. Corporate income tax is levied on juristic companies and partnerships carrying on business in Thailand, so the choice of entity, where profits are booked, and how money leaves the company all carry tax consequences that are cheaper to get right at the start.
The recurring topics are the shareholding and financing structure, dividend and service-fee flows to a foreign parent, treaty relief on cross-border payments, and whether the business qualifies for an incentive program. Board of Investment incentives are the largest of those, and assessing eligibility before committing to a structure is standard planning work. The annual computation and filing itself belongs to corporate income tax services, which planning feeds into rather than replaces.
Note: Where planning ends and evasion begins
The boundary is simple to state. Planning uses choices the law actually gives you: residency timing, treaty relief, incentive programs, sensible structures. Evasion hides or misstates the facts: unreported income, invented expenses, sham transactions, or documents that say something untrue. A legitimate advisor works entirely on the first side of that line and will put the reasoning in writing. If a proposal only works as long as the Revenue Department never sees the full picture, it is on the wrong side, whatever it is called.
Scoping and fact-finding
The firm collects the facts that drive the answer: residency pattern, income sources, corporate structure, planned transactions. Fees are quoted at this stage, once the firm can see the size of the work.
Analysis and written advice
The advisor sets out the options the law allows, what each one changes, and the position they recommend, with the legal basis stated. Written advice is what you fall back on if a position is questioned later.
Implementation
Structures are set up or amended, treaty relief is claimed, incentive applications are filed, and internal records are aligned with the advice. Some of this is legal work, some accounting; larger firms cover both under one engagement.
Annual review
Rules and personal circumstances both change, so planning positions get rechecked, usually before year end while there is still time to act. The day-to-day bookkeeping and filing that keeps the plan honest typically sits with an accounting firm.
The honest answer is: when a decision is still open. Planning advice before a move to Thailand, before a company is formed, or before a large transaction can change the outcome. The same advice after the fact usually cannot, and unwinding a poor structure costs more than designing it well.
A firm can tell you in the scoping conversation whether there is anything to plan in your situation. Sometimes the answer is that there is not, and a compliance engagement is all you need. That answer is worth having in writing too.
This page is general information, not legal advice. Rules, rates, and procedures change; for a specific situation, speak with a qualified tax professional.
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Every one of these is verified on Justenda and can take on tax planning work in Thailand.
International boutique law firm in Bangkok and Phuket, providing legal and tax services to investors, businesses, and private clients across Thailand
฿4,000–12,000 / hour
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International boutique law firm in Bangkok and Phuket, providing legal and tax services to investors, businesses, and private clients across Thailand
฿4,000–12,000 / hour
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