When can I apply to extend my F-1 (Visiting and Residing) period of stay, and what documents do I need?

The materials provided do not confirm a specific "how many days before" rule for the extension application period, so the timing is explained only based on the law.

When to apply

• You must apply before your period of stay ends.¹²
• In general, it is safer to prepare early rather than right before the expiration date. You need to check how many days before expiration applications are accepted. Please check with HiKorea or 1345.
• If the expiration date passes, it may count as a violation of your stay. In this case, we recommend consulting an administrative agent (행정사).

How to apply

• Attach the documents to the application form and submit them to the Immigration Office (출입국·외국인청) (office or branch) that has jurisdiction.²
• If approved, the permitted period is written on your Alien Registration Card (외국인등록증).²

Common documents

• Application form (Annex Form No. 34), passport, Alien Registration Card, fee [5]
• Proof of residence: lease contract, accommodation confirmation letter, utility bill receipt, etc.⁴

Additional documents by type

• Visiting relatives (F-1-1): Resident registration record of the relative in Korea, letter of identity guarantee (age 20 or older) [5]
• Household helper of a foreign diplomatic official: Official letter of cooperation from the embassy in Korea, employment contract [5]
• Settling household affairs after the end of a marriage: Marriage relation certificate showing the divorce, documents explaining why you must stay (statement of reasons, property division documents, etc.), 1 photo⁴

⚠️ Points to note

• Required documents differ by type. The Immigration Office may ask for additional documents.
• Nationals of countries with a high risk of tuberculosis may need a tuberculosis screening certificate. [5]
• Approval is not guaranteed. For final confirmation, check HiKorea (hikorea.go.kr) or 1345.