Documents to prepare

• • Passport with sufficient validity and blank pages
• • The application form for your category plus compliant photos
• • Proof of address in Thailand and a TM.30 filed by the housemaster
• • Financial evidence meeting the category rules, seasoned for the required period
• • Category-specific support: marriage certificate, company affidavit or school acceptance letter
• • Foreign documents translated and legalised through the inbound chain

Step-by-step process

1. 1. Match the category to your purpose — Confirm eligibility criteria before assembling any paperwork.
2. 2. Prepare and translate documents — Foreign records need home-country certification plus a Thai-accepted translation.
3. 3. File through the correct channel — Thai embassy abroad, the e-Visa system, or an immigration office in Thailand as applicable.
4. 4. Post-approval obligations — TM.30 notification, 90-day reporting, and a re-entry permit before leaving the country.

Pitfalls and rejection causes

• • Leaving Thailand without a re-entry permit cancels an extension of stay immediately.
• • 90-day reporting is not a visa extension — they are unrelated obligations.
• • Funds must be seasoned for the stated period, not deposited the day before filing.
• • Holding a visa is not permission to work; a separate work permit is required.

Tips from our team

• • Keep copies of every entry stamp and TM.30 for smoother extensions.
• • Read your permitted-to-stay date from the stamp, not the visa validity.
• • Always carry a spare document set; offices differ in copy requirements.

• Registration and legalisation are two separate steps

  Marriage and divorce are registered at a district office, while certification for overseas use is handled by the Legalization Division of the Department of Consular Affairs. Getting the order right avoids repeating steps.

• Discuss inheritance and wills before preparing translations

  Assets in different countries may fall under different laws. Define jurisdiction and the asset list first, then translate and certify only the documents actually required.

• Foreign divorce papers need a complete certification chain

  Foreign judgments or divorce certificates must be certified under the issuing country's system (apostille or embassy legalisation) before Thai translation and certification. Reversing the order usually means starting again.

• Obtain freshly issued civil records

  Receiving authorities often limit how old a certified copy may be. Ask about the accepted validity period first, then request the copy and start translation.

• Using records older than the accepted validity period

  Old certified copies of house registration, single-status affirmations or birth certificates can be refused even when the content is correct.

• Assuming Thai lawyers act as international notaries public

  Thailand has no notary public system. Lawyers registered with the Lawyers Council of Thailand act as Notarial Services Attorneys, and some countries require further certification by the Department of Consular Affairs.

• Submitting translations that were never legalised

  Most documents for overseas use require translation certification by the Department of Consular Affairs. A translation agency stamp alone is often not accepted.

• Overlooking the foreign spouse's documents

  Files are often complete on the Thai side while the foreign party's documents still lack the correct certification chain, blocking submission on the appointment day.