Part-time Job

🧾International student's part-time job tax? 5 steps for May comprehensive income tax filing

2026-04-21

'Comprehensive Income Tax Return Notice' from the National Tax Service in May

Have you ever been surprised after receiving a text message?

The Korean tax terms are unfamiliar, and it’s hard to know whether you need to pay or can get a refund.

Don’t worry, this guide will clearly solve your tax concerns as an international student! ✨

Are you confused whether you need to file Korean taxes as a foreign national? In Korea, your length of stay is more important than your nationality!

Those who have received a Foreigner Registration Card are classified as 'residents' under tax law.
If you have stayed in Korea for 183 days or more, you are required to declare all domestic income.
As an exception, diplomats and US military personnel in Korea are non-residents regardless of their length of stay.

👉 If you know this, no problem adapting to Korean life!

Were you disappointed about 3.3% being deducted from your monthly wage? If you file in May, you might get it back!

If you worked part-time or as a freelancer, it is classified as business income and 3.3% is withheld from your pay.
If you paid more than your actual tax due, you can get a refund through Comprehensive Income Tax Return.
Refunds are usually deposited into your account within 30 days of filing, between late June and early July.

👉 Don’t forget to file and secure your precious allowance!

Are you worried if it’s okay not to file your taxes? Remember, missing the deadline may result in a penalty!

You must file for 2025 income from May 1, 2026 (Fri) ~ May 31, 2026 (Sun).
Since May 31 is Sunday, filing is also possible until June 1, 2026 (Mon).
If not filed within the period, a 20% penalty will be imposed on the tax. (If you file voluntarily within 1 month after the deadline, the penalty is reduced by 50%)

👉 Mark your calendar and finish in advance!