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What are the guidelines for applying for an Extension of Stay for a Non-O visa in Thailand?

Thai Visa Extension Non-O Visa Re-entry Permit Visa Application Procedures Overstay Risks

Jul 7, 2025

7 days ago

Doug *********

ORIGINAL POSTER

Three extension of stay questions: I enter Thailand with a non O visiting Thai family with the intention of applying for the 12 month extension of stay. I am aware that immigration offices accept applications either 30 or 45 days before the non O expires.

1. If I need to leave Thailand and return (with a re-entry permit), obviously before my non O expires, what is the latest date that I can apply for EOS?

2. If the under consideration period goes beyond the expiry date of my visa, is there a danger of going on overstay?

3. Could leaving Thailand and returning as in question 1 above detrimentally affect the approval of EOS?

TIA

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TLDR : Answer Summary

The post discusses three key questions about applying for a 12-month extension of stay (EOS) on a Non-O visa while needing to leave Thailand temporarily. The user seeks clarification on the last possible date to apply for EOS when leaving the country, concerns over potential overstay if the application processing exceeds the visa expiry, and whether the act of leaving and returning would negatively affect the EOS approval. Responses indicate that the latest application date is the day of the 90-day entry stamp's expiration, that there is no risk of overstay if a valid application is submitted, and that leaving Thailand for a re-entry should not hinder EOS approval.

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Wylie *******

I would check with the immigration office you plan on using as far as the last day you can apply. I went about 2 weeks prior to my current expiration and they were not too happy about it. They said next time come 4 weeks before. Even with 2 weeks I barely got the application finished since they wanted a bunch of extra documents from my landlord that he was not willing to give.

7 days ago

Doug *********

ORIGINAL POSTER

@Wylie ******

Useful info, thank you.

7 days ago

Reply to

Doug *********

Tod *********

𝟭. 𝗜𝗳 𝗜 𝗻𝗲𝗲𝗱 𝘁𝗼 𝗹𝗲𝗮𝘃𝗲 𝗧𝗵𝗮𝗶𝗹𝗮𝗻𝗱 𝗮𝗻𝗱 𝗿𝗲𝘁𝘂𝗿𝗻 (𝘄𝗶𝘁𝗵 𝗮 𝗿𝗲-𝗲𝗻𝘁𝗿𝘆 𝗽𝗲𝗿𝗺𝗶𝘁), 𝗼𝗯𝘃𝗶𝗼𝘂𝘀𝗹𝘆 𝗯𝗲𝗳𝗼𝗿𝗲 𝗺𝘆 𝗻𝗼𝗻 𝗢 𝗲𝘅𝗽𝗶𝗿𝗲𝘀, 𝘄𝗵𝗮𝘁 𝗶𝘀 𝘁𝗵𝗲 𝗹𝗮𝘁𝗲𝘀𝘁 𝗱𝗮𝘁𝗲 𝘁𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗮𝗽𝗽𝗹𝘆 𝗳𝗼𝗿 𝗘𝗢𝗦?

the last day you can apply is the day your 90 day entry stamp from the Non-O visa runs out

𝟮. 𝗜𝗳 𝘁𝗵𝗲 𝘂𝗻𝗱𝗲𝗿 𝗰𝗼𝗻𝘀𝗶𝗱𝗲𝗿𝗮𝘁𝗶𝗼𝗻 𝗽𝗲𝗿𝗶𝗼𝗱 𝗴𝗼𝗲𝘀 𝗯𝗲𝘆𝗼𝗻𝗱 𝘁𝗵𝗲 𝗲𝘅𝗽𝗶𝗿𝘆 𝗱𝗮𝘁𝗲 𝗼𝗳 𝗺𝘆 𝘃𝗶𝘀𝗮, 𝗶𝘀 𝘁𝗵𝗲𝗿𝗲 𝗮 𝗱𝗮𝗻𝗴𝗲𝗿 𝗼𝗳 𝗴𝗼𝗶𝗻𝗴 𝗼𝗻 𝗼𝘃𝗲𝗿𝘀𝘁𝗮𝘆?

Nope, if they take your money (the 1900baht) and give you a receipt with a return date you'll get approved. They won't even let you apply if you're not gonna get the extension

𝟯. 𝗖𝗼𝘂𝗹𝗱 𝗹𝗲𝗮𝘃𝗶𝗻𝗴 𝗧𝗵𝗮𝗶𝗹𝗮𝗻𝗱 𝗮𝗻𝗱 𝗿𝗲𝘁𝘂𝗿𝗻𝗶𝗻𝗴 𝗮𝘀 𝗶𝗻 𝗾𝘂𝗲𝘀𝘁𝗶𝗼𝗻 𝟭 𝗮𝗯𝗼𝘃𝗲 𝗱𝗲𝘁𝗿𝗶𝗺𝗲𝗻𝘁𝗮𝗹𝗹𝘆 𝗮𝗳𝗳𝗲𝗰𝘁 𝘁𝗵𝗲 𝗮𝗽𝗽𝗿𝗼𝘃𝗮𝗹 𝗼𝗳 𝗘𝗢𝗦?

Nope, not in the least

7 days ago

Doug *********

ORIGINAL POSTER

@Tod ********

Thank you for the prompt response, Tod. Much appreciated.

7 days ago

Tod *********

@Doug ********

while you can apply for an extension right up until the day your 90 day stamp runs out I sure wouldn't cut it that close, because if you don't get all the documents etc correct and you're on the last day you can run yourself out of time. 😮 Best of luck with it ...

7 days ago

Doug *********

ORIGINAL POSTER

@Tod ********

Thank you, yes, I will make sure I have immigration's list of requirements.

7 days ago

Reply to

Doug *********

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