Korea Payroll & Tax API › service-period

Length of service at a South Korean employer from the hire date

Length of service at a South Korean employer from the hire date: years, months, days, next anniversary, annual leave entitlement for the current year of service, and severance pay eligibility.

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

Input

Example request

curl -X POST https://api.kkuldogu.com/v1/service-period -H "content-type: application/json" \
  -d '{"startDate":"2022-03-02","referenceDate":"2026-11-12"}'

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": "service-period",
  "input": {
    "startDate": "2022-03-02",
    "referenceDate": "2026-11-12"
  },
  "result": {
    "years": 4,
    "months": 8,
    "days": 11,
    "totalDays": 1717,
    "nextAnniversary": "2027-03-02",
    "daysUntilNextAnniversary": 110,
    "annualLeaveDaysPerYear": 16,
    "monthlyLeaveDaysSoFar": null,
    "severanceEligible": true,
    "severanceEligibleFrom": 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