Does Thailand's inheritance tax reach my father's Singapore assets?

Thailand taxes the heir, not the estate

The Inheritance Tax Act B.E. 2558 (2015) was published in the Government Gazette on 5 August 2015 and came into force after 180 days. It does not tax the deceased's estate as a block. Section 11 makes three classes of recipient liable: a person of Thai nationality; a natural person of non-Thai nationality having a domicile in the Kingdom according to the law on immigration; and a person of non-Thai nationality receiving an inheritance which is an asset situated in Thailand. Section 14 then draws the line that decides this question. The first two classes pay on assets situated either in Thailand or outside Thailand; the third pays on assets situated in Thailand only. It is the heir's passport, not the father's bank, that puts a Singapore account inside the base.

The corollary deserves saying plainly, because families discover it late: two children of the same father can get different answers. A son holding Thai nationality is assessed on his share of a Singapore portfolio. A daughter who holds another nationality and has no Thai domicile under the immigration law is assessed only on what she receives that sits in Thailand. Section 11 also deems a recipient juristic person to be Thai where it is registered in Thailand or established under Thai law, or where Thai nationals hold more than fifty per cent of its registered and paid-up capital at the time of entitlement, or where more than half of those with managerial power are Thai nationals. Routing a bequest through a company does not by itself move the nationality question.

The threshold, the rates, and the 150 days

Section 12 sets the threshold per heir, per deceased person: where the aggregate value received from one deceased person, on one occasion or several, exceeds THB100 million, tax is charged on the excess only, after deducting liabilities assumed with the inheritance. The Revenue Department's own calculation page still shows the THB100 million deduction, and section 12 requires the figure to be reviewed every five years against the consumer price index and revised by Royal Decree. Section 16 sets the rate at 10 per cent, reduced to 5 per cent where the recipient is an ascendant or a descendant. Section 3(2) removes the spouse from the Act entirely: it does not apply to an inheritance received from a deceased person by that person's spouse.

Section 14 lists what is inside the base: immovable properties; securities under the law on securities and exchange; deposits or other monies of the same characteristics which the deceased could have withdrawn or claimed from a financial institution; vehicles with registration; and financial assets prescribed by Royal Decree. A Singapore deposit and a listed shareholding are both on that list. Section 17 allows 150 days from the date the inheritance is received to file and pay. Section 23 permits payment by instalments over not more than five years. Section 19 gives the heirs 180 days from the death to agree who among them files, failing which any one of them may petition the court to appoint an administrator. The clock starts on receipt, not on the funeral.

What Singapore changes, and what it does not

Singapore removed estate duty for deaths on or after 15 February 2008 and levies no inheritance, gift or net-wealth tax (IRAS). That is a real fact and a widely misread one. It means Singapore will not tax the estate as it passes. It does not mean the value passes untaxed, because Thailand's charge is on the recipient and nothing in the Thai Act asks whether the source country taxed anything first. The two systems do not net off against each other. Section 11 does contemplate relief: the Minister, with the approval of the Cabinet, may reduce or exempt tax under a convention for the avoidance of double taxation with respect to taxes on inheritances. Whether any such instrument reaches a particular estate is a question for Thai tax counsel, not an assumption to plan on.

What actually changes the answer

Three things move the analysis honestly. The first is the heir's own status, because nationality and domicile under the immigration law are the switches in section 11, and they are personal rather than family-wide. The second is timing. Value transferred during the father's lifetime is not an inheritance at all and falls instead under the Revenue Code's gift rules: maintenance, support or gifts from ascendants, descendants or a spouse are exempt up to THB20 million in a tax year (section 42(27)); gifts made in a ceremony or on customary occasions from anyone else are exempt up to THB10 million (section 42(28)); immovable property transferred without consideration to a legitimate child is exempt up to THB20 million per child (section 42(26)); and under section 48(6) the recipient may elect a flat 5 per cent on the excess instead of progressive rates.

The third is whether the heir receives an inheritance at all. Assets already held in a structure the father settled during his life may pass by the terms of that structure rather than through his estate, and whether a distribution from such a structure is an inheritance received from a deceased person for the purposes of section 12 is a characterisation question on the actual documents. That is what Thai tax counsel is paid to answer, and any adviser who answers it in a brochure has not read the deed. What a family can do while everyone is alive is establish which assets sit where, in whose name, and under which law. Those are the same three questions the Revenue Department asks afterwards, and asking them early is stewardship, not greed.