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Global income tax

lastmod 2025-07-21created 2025-07-026 edits

Global income tax (綜合所得稅) is a tax levied by aggregating the various types of income attributable to an individual. Its characteristics are that it allows fair taxation suited to an individual's ability to pay, and that its revenue is highly flexible, making it easy to adapt to increases and decreases in fiscal demand.

To file global income tax with the National Tax Service, you fill out a global income tax return (綜合所得稅申告書).

Conditions under which you do not need to file and pay global income tax

  1. A person with only earned income who has completed the year-end tax settlement
  2. Business income of insurance solicitors, door-to-door salespeople, and contract delivery salespeople whose revenue in the previous tax period was less than 75 million won and who have no other income, where the year-end tax settlement was done by their company
  3. A person with only retirement income and business income subject to year-end tax settlement
  4. A person with only tax-exempt or separately taxed income
  5. A person with other income of 3 million won or less per year who wants separate taxation
  6. Annual income of 1.5 million won or less

Even office workers must file global income tax in these cases

Anyone who has income that counts as global income and does not meet any of the 6 conditions above must file and pay global income tax.

Let's also look at the conditions under which salaried workers must file and pay global income tax. Basically, you can understand that if the year-end tax settlement was not properly completed, even an employee must file and pay global income tax. Even an employee must file and pay global income tax if any one of the following 7 conditions applies.

Conditions under which employees must file and pay global income tax

  1. An employee who worked at two or more companies in the tax period (last year) (including changing jobs after resigning) and did not combine the earned income received from the multiple companies for year-end tax settlement at one company
  2. Other income exceeding 3 million won (other income: 8.8% withheld)
  3. Private pension income of 12 million won or more
  4. Financial income (interest and dividend income) exceeding 20 million won
  5. Working as a freelancer (business income: 3.3% withheld)
  6. Having business income (including real estate rental income)
  7. An employee with only earned income who did not do the year-end tax settlement (including those who left a job during the year and did not find a new job within the same year)

Filing global income tax on Hometax

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