Korea Payroll & Tax API › severance-pay

South Korea statutory severance pay (toejikgeum)

South Korea statutory severance pay (toejikgeum): 30 days of average wage per year of service, with retirement income tax, from hire date, last working day and last 3 months of pay. Pass monthlyOrdinaryWage to apply the legal rule that the ordinary wage replaces a lower average wage (Labor Standards Act art. 2(2)); without it only the average wage is used. Rounding follows the Ministry of Employment and Labor severance calculator.

Price: $0.01 USDC per call over REST (x402 on Base, no API key). MCP: free as severance_pay at https://api.kkuldogu.com/mcp. Basis year: 2026.

Input

Field	Type	Required	Description
`startDate`	string	yes	Hire date (YYYY-MM-DD)
`lastWorkDate`	string		Last working day; default today (YYYY-MM-DD)
`monthlyPay`	number	yes	Average monthly pay for the last 3 months (KRW)
`annualBonus`	number		Bonuses paid in the last 12 months (KRW)
`annualLeavePay`	number		Annual-leave allowance paid in the last 12 months (KRW)
`monthlyOrdinaryWage`	number		Monthly ordinary wage (base pay + fixed allowances). If its daily amount (÷209×8) exceeds the daily average wage, severance is computed from it (KRW)

Example request

curl -X POST https://api.kkuldogu.com/v1/severance-pay -H "content-type: application/json" \
  -d '{"startDate":"2021-03-02","lastWorkDate":"2026-10-31","monthlyPay":3500000}'

Without payment this returns 402 with x402 payment requirements; an x402 client pays $0.01 USDC and retries.

Example response

{
  "basisYear": 2026,
  "currency": "KRW",
  "disclaimer": "For reference only, not legal or tax advice. Uses official 2026 Korean rates and the same formulas as the kkuldogu.com calculators; actual payroll, NHIS/NPS notices and tax settlement can differ.",
  "source": "https://kkuldogu.com",
  "tool": "severance-pay",
  "input": {
    "startDate": "2021-03-02",
    "lastWorkDate": "2026-10-31",
    "monthlyPay": 3500000
  },
  "result": {
    "eligible": true,
    "daysEmployed": 2070,
    "averageDailyWage": 114130,
    "averageDailyWageExact": 114130.44,
    "severancePayGross": 19417809,
    "tax": 222220,
    "severancePayNet": 19195589,
    "taxableServiceYears": 6,
    "ordinaryWageCompared": false,
    "ordinaryWageApplied": false,
    "dailyOrdinaryWage": null,
    "eligibleFrom": null
  }
}

For reference only, not legal or tax advice. Uses official 2026 Korean rates and the same formulas as the kkuldogu.com calculators; actual payroll, NHIS/NPS notices and tax settlement can differ. · Calculators for people (Korean): kkuldogu.com · API home · llms.txt · OpenAPI