Korea Payroll & Tax API › brokerage-fee

South Korea real-estate brokerage fee ceiling (bokbi) for a sale, jeonse or monthly-rent lease of a house or officetel

South Korea real-estate brokerage fee ceiling (bokbi) for a sale, jeonse or monthly-rent lease of a house or officetel: statutory rate bracket, fee cap and VAT.

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

Input

Field	Type	Required	Description
`transaction`	sale \| jeonse \| wolse		sale, jeonse (lump-sum deposit lease) or wolse (monthly rent); default sale
`property`	house \| officetel		default house
`price`	number	yes	Sale price, or deposit for a lease (KRW)
`monthlyRent`	number		Monthly rent, wolse only (KRW)
`includeVat`	boolean		Add 10% VAT to the fee; default true

Example request

curl -X POST https://api.kkuldogu.com/v1/brokerage-fee -H "content-type: application/json" \
  -d '{"transaction":"sale","price":500000000}'

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": "brokerage-fee",
  "input": {
    "transaction": "sale",
    "price": 500000000
  },
  "result": {
    "maxFee": 2200000,
    "transactionAmount": 500000000,
    "ratePct": 0.4,
    "feeCap": null,
    "feeExcludingVat": 2000000,
    "vat": 200000
  }
}

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