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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.
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Before arguing over custody, establish who holds parental power and what any existing agreement or court order requires. Paying school fees, appearing on a birth certificate and providing daily care are relevant facts, but they do not necessarily answer the same legal question.
ThaiLawOnline assists parents with agreements, parentage issues and family-court proceedings. Start with the child’s present living arrangements and the specific decision in dispute: residence, schooling, contact, support or travel.
Parental power, residence, contact and support
| Issue | What needs to be settled |
|---|---|
| Parental power | Who has legal authority and which existing records or orders establish the position? |
| Residence and daily care | Where will the child live, and who will handle the ordinary school and care routine? |
| Contact | When and how will the child spend time with the other parent, including holidays and remote contact? |
| Financial support | Who pays which expenses, when are payments due, and how are exceptional costs agreed? |
| Travel and relocation | Which consent or court permission is required for the proposed journey or move? |
Do not assume a change to one arrangement automatically changes the others. Read the wording of an existing order before withholding payments, changing schools or refusing contact.
When the parents were not married
For a child born outside marriage, the father’s legal status requires particular attention. The mother’s position and the process for establishing the father’s legal parentage are addressed in the Civil and Commercial Code. A birth certificate bearing the father’s name does not, by itself, settle every question about parental power.
Review whether there has been a subsequent marriage, registration of legitimation or a court judgment. Registration has consent requirements; a court route is needed in some circumstances. The Department of Provincial Administration’s legitimation guidance explains the registration process. Bring the records before deciding which application to make.
Build the case around the child’s needs
A custody proposal should explain how the child will be cared for. Set out the school routine, housing, health needs, available caregivers and each parent’s involvement. Identify practical difficulties, including distance, working hours and language, and explain how the proposal deals with them.
Evidence matters more than labels such as “unfit” or “irresponsible.” Describe specific events, dates and their effect on the child. Preserve the original messages, school records, medical documents and payment records supporting your account. Do not coach the child or use the child to deliver threats.
If there is an immediate safety concern, explain the current risk and provide the available evidence at once. The urgent question is which protective step is available, not how to improve negotiating pressure.
Write an arrangement the parents are able to follow
An agreement saying only “reasonable access” leaves the parents to argue about its meaning. Address ordinary weekends, school holidays, collection points, late arrivals, video calls and notice of travel. Include a method for discussing changes without involving the child in the dispute.
For support, distinguish regular payments from school, medical and exceptional expenses. Record due dates and a traceable payment method. A parent’s complaint about contact should be addressed through the appropriate process, rather than by treating support as a bargaining tool.
Where terms are agreed during divorce, make sure the agreement and registration documents address the relevant parental-power and support issues. Where proceedings already exist, consider how the agreement will be recorded in those proceedings.
Cross-border families
A passport, a flight booking or the other parent’s earlier informal agreement does not settle authority for a permanent move abroad. Check the proposed travel against parental rights, existing orders and the requirements of the countries involved.
If another country has already issued an order, provide the complete order and details of the proceedings. Recognition, enforcement and any international return procedure require a separate assessment. Do not assume the Thai court will simply copy the foreign result.
What to send us
- The child’s birth certificate and parents’ identity documents.
- Marriage, divorce and legitimation records.
- Existing agreements, judgments and pending court papers.
- A short account of the child’s present routine and care.
- Relevant evidence of support, contact and any safety concern.
Include the next hearing date or planned travel date. We will assess the legal position, missing evidence and the work required. No outcome should be promised before the records are reviewed.
Arrange a child-custody consultation. For the broader legal framework, read our Thai family law guide.
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