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How to use
“My salary" is the amount of wage and salary income excluding non-taxable income.
"Number of family members qualified for deduction" is the number of dependent family members qualified for basic deduction including the filer himself/herself.
"Number of dependent children aged 20 or under" is the number of children whose age is 20 or under and qualified for basic deduction. If a child who is 20 or under earns yearly income amount exceeding 1 million won, he/she shall be excluded from "Number of family members qualified for deduction".