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When is the latest date I can apply for a 30-day extension on my tourist visa while in Koh Samui?

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Stuart ********

Stuart ********

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asked May 6, 2026

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I am in koh samui at moment on a tourist visa i arrived 28 march when is the latest i would go for 30 day extension. I am also looking for an agency in Koh samui if anyone can help thanks

Answer summary

You can apply for a 30-day extension on your tourist visa during the last week of your stay in Thailand. Check your entry stamp for the date you are required to leave, as this is the ultimate deadline for applying.

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Brandon ************

Brandon ************

Look in your passport. Your entry stamp has a date on it. The date on there stamp is the last day you're allowed to be in Thailand and the last day you can apply for an extension.

Koh Samui only lets you apply during the last week of your stay.

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