Korea Payroll & Tax API › child-benefits

South Korea government cash support for a newborn

South Korea government cash support for a newborn: first-meeting voucher, parent benefit for ages 0-1 and the monthly child allowance up to age 9, with a dated schedule.

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

Input

Field	Type	Required	Description
`birthDate`	string	yes	Birth or due date (YYYY-MM-DD)
`firstChild`	boolean		First child (voucher 2M) or later (3M); default true
`area`	capital \| non_capital \| depopulation_preferred \| depopulation_special		Residence, sets the child allowance: capital area 100k, non-capital 105k, depopulation preferred 110k, special 120k per month; default capital
`daycare`	boolean		Child attends daycare at ages 0-1 (parent benefit offset by daycare fee); default false

Example request

curl -X POST https://api.kkuldogu.com/v1/child-benefits -H "content-type: application/json" \
  -d '{"birthDate":"2026-11-10"}'

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": "child-benefits",
  "input": {
    "birthDate": "2026-11-10"
  },
  "result": {
    "total": 30800000,
    "firstMeetingVoucher": 2000000,
    "parentBenefitAge0": 12000000,
    "parentBenefitAge1": 6000000,
    "childAllowanceMonthly": 100000,
    "childAllowanceTotal": 10800000,
    "schedule": [
      {
        "stage": "age 0 (months 0-11)",
        "from": "2026-11-10",
        "to": "2027-11-09",
        "monthly": 1100000,
        "note": null
      },
      {
        "stage": "age 1 (months 12-23)",
        "from": "2027-11-10",
        "to": "2028-11-09",
        "monthly": 600000,
        "note": null
      },
      {
        "stage": "age 2 to under 9",
        "from": "2028-11-10",
        "to": "2035-11-09",
        "monthly": 100000,
        "note": "child allowance only"
      }
    ]
  }
}

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