The Non-Immigrant O Visa: Marriage, Family and Retirement in Thailand
The Non-Immigrant O visa is Thailand's most versatile long-stay visa category. It covers foreigners married to Thai nationals, retirees aged 50 and above, parents of Thai children, dependants accompanying foreign visa holders, volunteers and those seeking medical treatment in Thailand. Each sub-category has its own eligibility criteria and financial requirements.
Looking for the premium retirement visa?
The Non-Immigrant O covers simple retirement cases. For the 1-year multiple-entry retirement visa with mandatory health insurance from the outset, see the Non-Immigrant OA guide.
See the retirement visa guide →The information on this page is provided for general guidance only and is based on publicly available sources as of June 2026. Thai immigration rules change frequently. Always verify current requirements with the Royal Thai Embassy or consulate in your country and consult a qualified immigration professional for your specific situation. Expats Thailand accepts no liability for decisions made based on the information on this page.
The Six Non-O Sub-Categories
The Non-Immigrant O covers six distinct situations. Identify which one applies to you before preparing any documents.
Marriage to a Thai national
Valid for both opposite-sex and same-sex couples under the Marriage Equality Act since January 2025. Funds must be seasoned for at least 2 months before the first application and 3 months before each annual extension.
Retirement (simple route)
A straightforward long-stay option without mandatory health insurance. The Non-O retirement route gives you a 90-day initial stay which you extend to 1 year at a Thai immigration office. No mandatory health insurance required unlike the OA.
Parent of a Thai child
Provides a legal long-stay option for foreign parents who have a Thai child but are not married to a Thai national. The child must be registered as a Thai national. Extension granted on a 1-year basis, renewable annually.
Accompanying a foreign visa holder
Eligibility is based entirely on the primary visa holder's status. If the primary holder's visa expires or is cancelled, the accompanying Non-O loses its basis. You cannot work in Thailand on this category.
Volunteering
Appropriate for genuine volunteer work with established organisations officially registered in Thailand. Not appropriate for informal volunteering arrangements. Less commonly used than the marriage and retirement sub-categories.
Medical treatment
For extended treatments that require a longer stay than a visa exemption allows, such as cancer treatment, major surgery recovery or long-term rehabilitation. For short medical trips within a visa exemption, no separate visa is needed.
How to Apply for the Non-Immigrant O Visa
Applying from outside Thailand (recommended)
Submit your application at the Thai embassy or consulate in your home country. The Non-O is issued as a 90-day single-entry visa. Upon arriving in Thailand you apply for a 1-year extension at your local immigration office before the 90 days expire. Since January 2025, the Non-O marriage category can also be applied for through the Thai eVisa portal at thaievisa.go.th. Check whether your country is supported before using the online route.
Applying from inside Thailand
In some circumstances you can apply for a Non-O extension at a local immigration office without leaving the country. Most commonly used for the marriage and retirement sub-categories. You must have valid immigration status when you apply. You cannot apply if you have overstayed even by a day.
The 1-year extension
Once in Thailand on a Non-O visa, apply for a 1-year extension at your local immigration office before your 90 days expire. For the marriage category, extensions are often processed in stages: a short initial extension during document review followed by the full 1-year extension once approved. Bring all original documents plus copies. Arrive early as immigration offices are often crowded. Apply at least 30 days before expiry.
⚠️ Re-entry permit: essential if you travel
If you plan to travel outside Thailand during your 1-year extension, you must obtain a re-entry permit before leaving or your extension will be permanently cancelled. A single re-entry permit costs 1,000 THB. A multiple re-entry permit costs 3,800 THB and covers all exits during your extension. Obtain it at any immigration office or at the airport before departure.
Your Obligations Once You Are in Thailand
TM30: Address declaration within 24 hours
Every foreigner staying in Thailand must have their address declared to local immigration within 24 hours of arrival or any change of address. Your landlord is legally responsible for filing the TM30. Without an up-to-date TM30, you cannot complete your 90-day report or apply for a visa extension.
See our TM30 guide →90-day reporting: mandatory every 90 days
Even with a 1-year extension, you must report your address to Thai immigration every 90 days. This can be done in person, by post or online. Failure to report on time results in a fine of 2,000 THB. Missing by more than 7 days increases the fine to 5,000 THB.
See our 90-day report guide →Annual extension renewal
Your 1-year extension must be renewed at your local immigration office every year. Start the renewal process at least 30 days before your current stamp expires. You must continue to meet the financial requirements of your sub-category at each renewal.
Marriage sub-category: random home visits
Immigration officers conduct random home visits to verify that marriages are genuine. Be prepared to demonstrate that you and your Thai spouse actually live together. Keep evidence of your shared life including photos, shared utility bills and evidence of joint activities.
Cannot work without a separate work permit
The Non-O visa does not authorise any form of work in Thailand regardless of sub-category. Marriage to a Thai national does not give automatic work rights. If you want to work, you must obtain a Non-B visa and Thai work permit independently of your Non-O status.
See the Non-B visa guide →Frequently asked questions
Need help with your Non-O application?
Whether you are applying for a marriage visa, retirement extension or accompanying your spouse, we can connect you with trusted immigration specialists who handle the full process and know the specific requirements of each immigration office.