A professional and welcoming photograph of a smiling, diverse couple sitting across a desk from a lawyer at PS Law & Business in Bangkok.
PS Law and Business Logo
Family Law 30 Jun 2025

Cohabitation Agreements in Thailand: Are They Recognized and Why You Might Need One

Unmarried and living together in Thailand? A cohabitation agreement can provide crucial legal protection for you and your partner, especially for foreigners.

Thailand's vibrant culture and welcoming atmosphere attract many foreigners who find love and build lives here. Often, this happens without formal marriage. While you may live as a married couple, it is crucial to understand that Thai law does not recognize common-law or "de facto" marriages. This means that without official marriage registration, you and your partner are viewed as legally separate individuals, with no automatic rights to each other’s property or assets in the event of a separation or death. This is where a Cohabitation Agreement becomes essential.

What is a Cohabitation Agreement?

A Cohabitation Agreement is a private contract between two individuals who are living together but are not married. Think of it as a prenuptial agreement for unmarried couples. Its primary purpose is to outline how assets, debts, and property will be managed during the relationship and how they will be divided if the relationship ends. For foreigners with a Thai partner, this document can provide a vital layer of financial security and clarity.

Why Thai Law Doesn't Automatically Protect Unmarried Couples

The Thai Civil and Commercial Code is clear: a marriage is only legally valid when it is officially registered with the appropriate government office (the Amphur or Khet). Religious ceremonies or simply living together for a long period do not grant marital status or the associated legal rights. Without this registration, the laws governing the division of marital property (Sin Somros) do not apply. This leaves both partners, but particularly foreign partners who may have invested significantly in property or a business, in a vulnerable position.

Key Areas a Cohabitation Agreement Can Cover:

  • Property and Assets: Clearly define which assets are separate property and which are jointly owned. This is especially important when a foreigner provides funds for a house or condo that, by law, may be registered in the Thai partner's name.
  • Financial Contributions: Document contributions made by each partner to joint expenses, investments, or property purchases. A cohabitation agreement can function similarly to a loan agreement in this respect.
  • Debt Responsibility: Specify how any joint debts will be handled during the relationship and upon separation.
  • Business Interests: If you co-own a business, the agreement can outline ownership shares and what happens to the business if you split up.
  • Support: While "palimony" is not a concept in Thai law, the agreement can stipulate terms for financial support after a separation.
  • Inheritance: In the case of death, a partner in an unmarried couple has no automatic inheritance rights. A cohabitation agreement, paired with a Last Will and Testament, is crucial to ensure your partner is provided for.

Are Cohabitation Agreements Legally Enforceable in Thailand?

While Thai law does not explicitly have a statute for "cohabitation agreements," they are generally treated as civil contracts. For the agreement to be enforceable, it must adhere to the general principles of contract law in Thailand. This means it must:

  • Be made in writing.
  • Be entered into voluntarily by both parties, without duress or fraud.
  • Not contain terms that are against the law or public morals.

The Thai Supreme Court has previously relied on the principles of co-ownership to divide property between unmarried partners, which lends weight to the utility of having a clear, written agreement. Having the agreement drafted by a qualified lawyer and potentially notarized by a notary public can further strengthen its validity.

Why Foreigners Especially Need a Cohabitation Agreement

Foreigners face unique challenges in Thailand, particularly concerning property ownership. As foreigners are generally prohibited from owning land, any land purchased during the relationship is typically registered in the Thai partner's name. A cohabitation agreement is a critical tool to:

  • Document Your Financial Contribution: It serves as evidence of your financial investment in the property, which can be crucial in recovering your funds if the relationship dissolves.
  • Establish Clear Intentions: It demonstrates the mutual understanding and agreement between you and your partner regarding asset ownership, preventing future disputes.
  • Provide Peace of Mind: Knowing you have a legally recognized document protecting your interests can bring significant peace of mind, allowing you to focus on your life together.

Conclusion

Living together without being married is common, but it's essential to understand the legal realities in Thailand. A well-drafted Cohabitation Agreement provides a necessary layer of protection that the law does not automatically grant to unmarried couples. It is a practical, proactive step to protect your assets and ensure that both you and your partner are on the same page, creating a secure foundation for your life together in Thailand.


Frequently Asked Questions (FAQ)

Q1: Is a Buddhist wedding ceremony enough to be legally married in Thailand?

A: No. While culturally significant, a Buddhist ceremony or any other religious rite does not constitute a legal marriage in Thailand. Only registering the marriage at a district office (Amphur/Khet) makes it legally binding.

Q2: If we break up, can I get back the money I put into a house that's in my Thai partner's name?

A: Without a cohabitation agreement or some form of loan agreement, this can be very difficult. The agreement is your primary evidence to prove your financial contribution and the intention for it to be returned or for you to have a share in the property's value.

Q3: Can a cohabitation agreement include details about child custody?

A: While you can state your intentions, matters of child custody are ultimately decided by the Juvenile and Family Court, based on the best interests of the child. However, the agreement can be presented as evidence of your parental intentions.

Q4: Do we both need our own lawyer?

A: While not strictly required, it is highly recommended for each partner to have independent legal advice. This ensures the agreement is fair and that both parties fully understand their rights and obligations, which strengthens its enforceability.


External Resources

Legal Blog

Family Law

PS Law & Business
PS Law & Business 03 Jun 2025
Verifying Marital Status in Thailand: Due Diligence Before Remarrying

Planning to remarry in Thailand? Crucial due diligence includes verifying your partner's current marital status to ensure a legally sound and stress-free union.

Read More

Book an appointment

Why choose PS Law & Business Services?

Client-Focused Approach

We tailor our legal strategies to meet your specific needs and goals.

Transparent Communication

We keep you informed and involved throughout the legal process.

Cost-Effective Solutions

We offer competitive rates and transparent billing practices.

Proven Results

We have a strong track record of success in achieving favorable outcomes for our clients.

Multilingual support

Our experienced attorneys are fluent in English and Thai.

Get A Quote

Contact Us

CAPTCHA
Image CAPTCHA
Enter the characters shown in the image.