JungyuMarket Calculators

Website overview

About JungyuMarket Calculators

JungyuMarket Calculators is a free hub of 20 Korean tax and payroll calculators for small business owners, freelancers and employees. It covers VAT for general and simplified taxpayers, 3.3% withholding, severance pay, café menu cost ratios, jeonse-to-monthly-rent conversion, brokerage fees, loan interest, overseas stock capital gains, part-time net pay, year-end tax settlement, seller break-even ROAS, rent-to-sales ratio, card sales reconciliation, income tax, the four major insurances, dependent status on national health insurance, VAT on closing a business, key money, retirement pension (IRP) and gift tax. Each page shows the calculation formula and the legal basis beside the result, with 2026 rates, so a reader can check a figure instead of trusting it. Nothing needs an install or an account, and every number is computed in the browser with no data sent anywhere.

At a glance

Key features

• VAT calculator for general and simplified taxpayers
• Severance pay and part-time hourly net pay
• Delivery-app real margin and seller break-even ROAS
• Jeonse to monthly rent conversion with brokerage fee
• Card sales payout reconciliation against fees

Practical details

What can you use this website for?

Before setting a delivery-app menu price, a cafe owner enters average order value and the app commission rate, sees the real margin per order, and adjusts the price on the same page.

Who is it for?

Korean small business owners, store and cafe operators, online sellers, freelancers and salaried employees who need a quick, checkable number.

What to know

What makes it different?

Each result sits next to its formula, the 2026 tax rates and the legal basis in Korean, with no signup and no ads; the figures are calculated in the browser and nothing is uploaded.