Korea Payroll & Tax API › shutdown-allowance

South Korea business shutdown allowance (hyueop sudang)

South Korea business shutdown allowance (hyueop sudang): 70% of average wage, or the ordinary wage if that is lower, for days the employer suspends work (5+ employee workplaces).

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

Input

Field	Type	Required	Description
`monthlyAverageWage`	number	yes	Monthly average wage (KRW)
`monthlyOrdinaryWage`	number	yes	Monthly ordinary wage (KRW)
`days`	number	yes	Shutdown days
`fiveOrMoreEmployees`	boolean		Workplace has 5 or more employees; default true

Example request

curl -X POST https://api.kkuldogu.com/v1/shutdown-allowance -H "content-type: application/json" \
  -d '{"monthlyAverageWage":3200000,"monthlyOrdinaryWage":2900000,"days":30}'

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": "shutdown-allowance",
  "input": {
    "monthlyAverageWage": 3200000,
    "monthlyOrdinaryWage": 2900000,
    "days": 30
  },
  "result": {
    "total": 2209315,
    "dailyAverageWage": 105205,
    "seventyPctDaily": 73644,
    "dailyOrdinaryWage": 111005,
    "appliedDaily": 73644,
    "ordinaryWageApplied": false
  }
}

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