Korea Payroll & Tax API › ordinary-wage

South Korea ordinary wage (tongsang imgeum)

South Korea ordinary wage (tongsang imgeum): hourly and daily ordinary wage from base pay, fixed allowances and regular bonuses, the basis for overtime, unused leave and dismissal notice pay.

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

Input

Field	Type	Required	Description
`monthlyBasePay`	number	yes	Monthly base pay (KRW)
`monthlyFixedAllowances`	number		Fixed monthly allowances paid to everyone regularly (KRW)
`annualRegularBonus`	number		Regular bonuses per year (KRW)
`weeklyHours`	number		Contracted hours per week; default 40

Example request

curl -X POST https://api.kkuldogu.com/v1/ordinary-wage -H "content-type: application/json" \
  -d '{"monthlyBasePay":2800000,"monthlyFixedAllowances":300000}'

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": "ordinary-wage",
  "input": {
    "monthlyBasePay": 2800000,
    "monthlyFixedAllowances": 300000
  },
  "result": {
    "hourly": 14833,
    "monthly": 3100000,
    "monthlyHours": 209,
    "dailyHours": 8,
    "daily": 118660,
    "overtimePerHour": 22249,
    "unusedLeavePerDay": 118660,
    "dismissalNoticePay30d": 3559809,
    "belowMinimumWage": 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