Net-to-Gross Calculator

Korea's income tax is progressive — higher income is taxed at higher marginal rates. Going from ₩3M to ₩4M monthly take-home requires roughly ₩16M more in annual gross salary, but going from ₩4M to ₩5M requires ₩18M or more. The higher your bracket, the more pre-tax raise you need for the same take-home increase.

Net-to-gross (reverse) calculation starts from your desired monthly take-home and works backwards to find the gross annual salary required. It's especially useful during job offer reviews or salary negotiations when you want to know exactly what gross salary you need to achieve a target net income.

Negotiate on gross salary — that's the standard employers use — but anchor your floor with a reverse calculation. Figure out your target take-home first, reverse-calculate the required gross (e.g., 'I need at least ₩49M gross to clear ₩3.5M/month'), then enter negotiations with that concrete number. Also clarify whether non-taxable allowances like meal and commuting subsidies are included, since they can meaningfully raise your effective take-home without changing the stated gross.

This reverse calculator assumes 1 dependent (self only). More dependents reduce income tax withholding, meaning you could achieve the same take-home with a slightly lower gross salary. Use the main salary calculator to fine-tune by adjusting the number of dependents.

Start by deciding the monthly income you need to cover your living expenses. Reverse-calculate to find the annual gross salary you should ask for. For example, if you need ₩3,500,000/month take-home, you'll need approximately ₩49,000,000 in annual salary — so request at least that amount.

National Pension (4.75%), Health Insurance (3.595% + Long-Term Care ~0.472%), and Employment Insurance (0.9%) are all deducted from gross pay, on top of income and local tax. For a ₩50M annual salary, roughly ₩7.2M is deducted annually, leaving ~₩42.8M in take-home pay. Understanding this gap is essential for realistic budgeting and salary negotiations.

Yes. Meal allowances (₩200K/mo) and commuting allowances (₩200K/mo) are excluded from taxable income, which reduces income tax and lowers the gross salary needed for a given take-home. This calculator assumes zero non-taxable allowances, so if you receive these benefits, your required gross salary will likely be lower than shown. Enter your non-taxable allowances in the full salary calculator for a more precise estimate.

Each company structures pay differently — the mix of base salary, bonuses, and non-taxable allowances varies widely. This calculator uses the standard 100% withholding rate, and actual income tax is reconciled at year-end tax settlement. For an accurate comparison, ask the company for a sample payslip, or enter your non-taxable allowance details into the full salary calculator.