Separation of Assets in a Thai Divorce: Sin Somros and Sin Suan Tua

Reviewed by ThaiLawOnline, a licensed Thai law firm practising in Thailand since 2006. Thai lawyer of record: Wichuda Atthamethakon, LL.M., Thai Bar Licence 3149/2556.

Last updated on 29 September 2026

Co-owned assets and a spouse’s power to sell

Unregistered partners do not acquire the statutory marital-property regime merely by living together. They may nevertheless establish co-ownership of assets acquired through their joint earning activity. In Supreme Court Decision No. 97/2569, the court recognised equal shares in two plots derived from the partners’ joint business before marriage. Their later marriage did not turn those assets into marital property. Preserve evidence of the joint business, payments and acquisition history. This ruling does not give a foreign partner a general right to own Thai land. See our analysis of unmarried couples and property.

Selling or mortgaging marital immovable property generally requires joint action or the other spouse’s consent under Section 1476 of the Civil and Commercial Code. Section 1480 permits an annulment claim, subject to ratification, protection for a third party acting in good faith for value, and the one-year knowledge and ten-year transaction limits. In Supreme Court Decision No. 3228/2569, two 2017 transfers were revoked in full and the recipient was ordered to leave those plots. The challenges to two 2006 transfers were time-barred. The decision did not undo all four sales. Check the acquisition date, marital status, source of funds and consent before registration. See our spousal-consent analysis.

Separating assets for a divorce in Thailand is one of the most important and sensitive parts of the process. Whether you are married to a Thai citizen or a foreigner, knowing how Thai law divides property is important. This guide explains the key legal principles, processes, and tips to help you protect your interests, including separation of assets for a divorce in Thailand.

The classification of marital and personal property is introduced in our overview of family law in Thailand.

Legal Basis for Separation of Assets in Thailand

Under the Thai Civil and Commercial Code, there are two main types of property. These are used for asset separation in a divorce in Thailand

Personal Property (สินส่วนตัว / Sin Suan Tua)

This include, according to section 1471 of the Civil Code:

• Assets owned before the marriage
• Personal gifts or inheritance
• Tools or equipment used for a profession
• Khongman gifts (traditional Thai engagement gifts)

Personal property remains with the person who owns it and is not divided during divorce. According to Section 1472, if someone sells or exchanges personal property, they still own the replacement or money.

Marital Property (สินสมรส / Sin Somros)

When discussing asset division in a divorce in Thailand, it’s important to understand two types of property. These are personal property and marital property. Marital property, according to section 1470 and section 1474 of the Civil and Commercial Code, includes:

One caution before the list, because it is the most common error in English-language writing on this topic: Section 1471 defines PERSONAL property, not marital property. Marital property is section 1474, and section 1470 states the residual rule that everything not set apart as personal property is marital. A source that cites section 1471 for the definition of marital property has the two categories the wrong way round.

• Property acquired during the marriage
• Gifts or inheritance expressly declared as marital property
• Income generated from personal property

Marital property is divided equally between the spouses on divorce. Section 1533 of the Civil and Commercial Code states it without qualification: on divorce, the marital property shall be divided equally between the spouses. The word to resist here is “usually”. The equal split is the rule, and the argument in a Thai divorce is about which assets are marital in the first place, not about what proportion each spouse deserves.

Table: Personal vs Marital Property

In divorce cases in Thailand, marital property is divided equally and personal property stays with its owner.

Property Type	Description	Divided Upon Divorce?
Sin Suan Tua	Owned before marriage, personal gifts, inheritance	No
Sin Somros	Acquired during marriage, income from personal property	Yes

The Separation Process

Step 1: Identify and Document Assets

Each spouse must disclose all personal and marital property. Supporting documents like bank records, title deeds, or invoices help establish ownership and value.

Step 2: Asset Valuation

Professional appraisals may be needed for real estate, businesses, or valuable personal property. Assets without proper documentation may be presumed to be Sin Somros.

Step 3: Negotiation or Mediation

Many couples reach agreements without court. Mediation or lawyer-assisted negotiation can help avoid long and costly disputes.

Step 4: Court Resolution (if no agreement)

If no agreement is reached, a Thai family court divides the marital property under section 1533, which says in terms that on divorce it shall be divided equally. Thai law has no equitable-distribution discretion. A judge does not weigh the length of the marriage, the relative contributions of each spouse, their needs or their conduct in order to arrive at a different ratio, and any page that says otherwise is describing English or Canadian law rather than Thai law. What the court actually decides is:

• Which assets are sin somros and which are sin suan tua, because that classification, not the ratio, is what the money turns on
• Whether a spouse disposed of marital property for their own benefit, to injure the other, or without a consent the law required. Under section 1534 that property is counted as if it still existed, and the spouse at fault makes up the shortfall out of their own half or even out of their personal property
• The valuation and the practical mechanics of splitting indivisible assets such as a house or a business

So the answer to the question everyone asks is that the split is one half each, and the argument worth having is about classification and about section 1534 add-backs, not about persuading a judge you deserve more than half. Note also section 1535: on termination of the marriage the spouses are liable for common debts equally.

Special Situations

Prenuptial Agreements

A legally valid prenuptial agreement (สัญญาก่อนสมรส) can define which property remains personal. It is valid only if it is made in writing, signed by both spouses and at least two witnesses, and recorded in the marriage register at the moment the marriage is registered (Section 1466); a clause contrary to public order or good morals, or one choosing a foreign law to govern the property, is void (Section 1465). There is no separate fairness test.

Read more about Prenuptial Agreements in Thailand

Debts and Liabilities

A debt is not joint merely because it was incurred during the marriage. Section 1490 makes joint only debts for running the household and the family’s needs, maintenance, medical care and the children’s education; debts connected with marital property; debts from work the spouses do together; and a debt one spouse took for their own benefit that the other ratified. Other debts, such as gambling losses, stay personal. On termination of the marriage the joint debts are shared equally (Section 1535).

Businesses and Companies

If one spouse owns a company or shares, valuation and division can be complex. Shares or a business acquired during the marriage are marital property and split equally like any other (Section 1533); contribution does not change the ratio, and the argument is about classification and valuation. A business owned before the marriage stays personal, but the profits it paid out during the marriage are marital (Section 1474(3)).

Foreign Assets

Thai courts generally do not divide foreign property, but it must be disclosed. You may need lawyers in other countries to secure your share abroad.

What to Do When Your Spouse Gives Marital Assets Away

One of the most common things we see before a divorce filing is not a hidden account. It is a gift. Money moved to a partner. A car put in a sibling’s name. A condo signed over to a parent “for safekeeping.” Thai law has a specific remedy for this, and it has a deadline that most people miss.

File early, because waiting costs you twice

This is the single most important point on this page, so it goes first.

Under CCC section 1480, an action to revoke an unauthorised dealing with marital property is barred:

• one year after you learn of the grounds for revocation; and
• ten years after the transaction itself, in any event.

The one-year clock starts when you find out, not when you separate, not when you file for divorce, and not when you finally decide to do something about it. Discovering a transfer and then spending eight months deciding whether to act can extinguish the claim outright.

There is a second, less obvious cost to waiting, confirmed by the Supreme Court in Decision 139/2569: a gift of marital property remains valid until a court revokes it. That means the recipient is not in default until judgment, and interest on the money only starts running from the date of the judgment, not from the date the money left the account. In that case, a wife recovered THB 1,431,731 in full but lost roughly two years of interest on it, purely because of timing.

When can a gift of marital property be revoked?

CCC section 1476 lists the dealings with sin somros that spouses must manage jointly or with the other’s consent. Subsection (5) covers gratuitous gifts (hai doy sanaeha / ให้โดยเสน่หา). A gift made by one spouse alone is revocable unless it clears a narrow two-part exception. The gift must be both:

• for charitable purposes, for social purposes, or made in accordance with moral obligation; and
• proportionate to the family’s station in life.

This is frequently misstated as four separate exceptions, which would let any gift through so long as it was proportionate to the family’s means. It does not work that way. A gift must satisfy both limbs. A temple donation of a sensible size is covered. A customary family wedding gift is covered. A seven-figure transfer to a romantic partner fails both.

The third-party defence, and why it usually fails against a gift

Section 1480 protects a third party who received the property in good faith and for value. Both limbs are required. Because a gift by definition has no consideration, the recipient of a gift cannot rely on this protection no matter how innocent they were. This is why revocation claims against a gift recipient are considerably stronger than claims against a buyer.

The practical consequence: if your spouse sold the asset to a genuine arm’s-length buyer, your claim is likely against your spouse, not the asset. If your spouse gave it away, the asset itself is recoverable.

Two separate claims, and you can run both

Where the transfer went to a romantic partner, two distinct claims arise, and they are often confused:

Claim	Provision	What it recovers	Against whom
Revocation of the gift	CCC s.1480 (with s.1476)	The property or money itself	The recipient
Compensation	CCC s.1523 para 2	Damages for the marital wrong	The third party

Decision 139/2569 settled an important procedural question here: settling one does not bar the other. The Supreme Court held that a concluded section 1523 compensation claim is not a repeat proceeding under CPC section 144, because the two claims rest on different grounds. You can run them in sequence.

But note the interaction with the limitation period. If you settle the compensation claim first and the section 1480 one-year clock has been running the whole time, you may win the first case and lose the right to bring the second. Sequence them deliberately, not by accident.

What to do, in order

1. Date your discovery. Write down when you learned of the transfer and how. This is the fact the one-year limitation period turns on, and you may have to prove it.
2. Preserve the evidence. Bank statements, transfer slips, Land Department records, chat messages, photographs of the asset. Get these before accounts are closed or access is cut off.
3. Do not ratify. Section 1480 removes your right to revoke if you have ratified the transaction. Avoid anything that reads as approval after the fact: signing consent documents, accepting a share of the proceeds, written acknowledgements. Decision 139/2569 confirms that avoiding the transaction is not ratifying it, but do not create the argument in the first place.
4. Get the injunction question answered early. If further dissipation looks likely, provisional measures to freeze the asset are worth considering before, not after, the next transfer.
5. File the section 1480 claim promptly, ahead of or alongside, any compensation claim.

If you have just discovered a transfer, the clock is already running. Speak to our family law team before the one-year period under section 1480 closes.

Foreigners and Mixed-Nationality Marriages

If one spouse is a foreigner, the Conflict of Laws Act B.E. 2481 decides which law governs the marital property: movables follow the spouses’ national law, while immovable property follows the law of the place where it is situated, so Thai law governs land and buildings in Thailand (Section 22). Under the Land Code a foreigner cannot own land in Thailand. They can only hold it through a valid structure, like a lease or usufruct.

In cases involving foreigners, our divorce lawyer in Bangkok can help ensure compliance with both Thai and international law.

Non-Married Couples

For unmarried couples who bought property together, marital property law does not apply. Instead, you may need to pursue a civil case for co-ownership or partnership dispute resolution.

Protecting Yourself

Understanding the intricacies of the separation of assets for a divorce in Thailand can make a significant difference:

• Get Legal Advice: A Thai lawyer can help draft agreements, negotiate settlements, and represent you in court.
• Gather Evidence: Collect receipts, photos, and documents showing who paid for what.
• Be Transparent: Concealing assets can harm your credibility in court.
• Avoid Conflict: Mediation is often quicker, cheaper, and less stressful.

Last reviewed: 29 September 2026. Civil and Commercial Code sections 1465, 1466, 1471, 1474, 1480, 1490, 1533, 1534 and 1535 and Conflict of Laws Act section 22 were read in Thai. The accounts of Supreme Court decisions 97/2569, 139/2569 and 3228/2569 were not re-read against the judgments in this review.

Summary

Separation of assets in Thailand is a legal process that involves identifying, valuing, and dividing marital property equally. Whether you resolve things amicably or go to court, understanding the law helps protect your financial future.
Finally, navigating the separation of assets for a divorce in Thailand requires knowledgeable legal advice. Our legal team has helped hundreds of clients with divorce and family law matters across Thailand.

Links:

• Juvenile and Family Courts in Thailand responsible in case of contested divorces