Korea Payroll & Tax API › pension-savings-tax-credit

South Korea pension savings and IRP tax credit

South Korea pension savings and IRP tax credit: 16.5% or 13.2% (incl. local tax) of contributions up to KRW 9 million, and the extra refund from filling the remaining limit.

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

Input

Example request

curl -X POST https://api.kkuldogu.com/v1/pension-savings-tax-credit -H "content-type: application/json" \
  -d '{"grossSalary":50000000,"pensionSavings":4000000}'

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": "pension-savings-tax-credit",
  "input": {
    "grossSalary": 50000000,
    "pensionSavings": 4000000
  },
  "result": {
    "credit": 660000,
    "ratePct": 16.5,
    "eligibleContribution": 4000000,
    "remainingLimit": 5000000,
    "extraCreditIfMaxed": 825000
  }
}

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