Corporate vs Individual Tax Calculator

Corporate vs Individual Tax Calculator helps model Korea-related business income, expenses, tax rate, and credits in English.

Business form comparison inputs

Sole proprietor total burden

₩12,756,677

Effective rate 25.5%

Corporation total burden

₩11,247,574

Effective rate 22.5%

Recommendation

Incorporation

Difference ₩1,509,103

Corporation CEO net income

₩35,907,878

Salary plus dividends after tax and insurance.

Compares sole-proprietor and corporation tax burden using the Korean individual income tax, corporate tax, local tax, social insurance, CEO salary, dividend, and Yellow Umbrella deduction logic. This English calculator calls the same pure tax calculation function used by the Korean page. Inputs and labels are translated; the formula is not replaced by a generic value-times-rate stub.

Related calculators

Sole proprietor vs corporation tax calculator

This English page follows the Korean business-form comparison for individual income tax, corporate tax, local income tax, social insurance, CEO salary, dividends, and Yellow Umbrella deduction.

Individual business side

The sole-proprietor calculation starts with annual sales less deductible expenses. It then applies personal deductions, pension and health-insurance deductions, the Korean progressive individual income tax brackets, local income tax at 10 percent of income tax, and regional social-insurance burden.

The tax brackets reflected in the Korean source include the 6 percent bracket up to KRW 14 million, 15 percent up to KRW 50 million, 24 percent up to KRW 88 million, and higher brackets up to 45 percent.

Corporation side

The corporation side deducts CEO salary before corporate taxable income, then applies the 2026 corporate tax brackets. In this model the first KRW 200 million corporate bracket uses 10 percent, with higher brackets at 20, 22, and 25 percent.

CEO salary is taxed again as earned income. Remaining after-tax corporate profit can be retained or distributed as dividends, and dividends are modeled with 15.4 percent withholding up to the KRW 20 million financial-income threshold.

How to read the recommendation

The recommendation compares total burden, not only income tax. Social insurance, CEO take-home pay, retained earnings, dividends, and the selected dividend ratio can all change the result.

Use the output as a planning screen before incorporation. Actual incorporation decisions also depend on legal liability, credit, bookkeeping cost, payroll administration, expected investment, and dividend policy.