About Korea Business Calendar
Korea Business Calendar is an MCP server for Korean public holidays, business-day calculations, and tax and payroll deadlines. It serves businesses and agents that need date planning based on entity type and employee status, with holiday adjustments applied to scheduled deadlines.
Key features
- 01List holidays, substitute holidays, and election days
- 02Add or count business days
- 03Find next or previous business day
- 04Filter tax deadlines by business profile
- 05Explain individual calendar rules
Use cases
- 01Review a company's filings due this month
- 02Calculate a delivery date after business days
- 03Check adjusted tax deadlines around holidays
MCP support
Provides MCP clients with tools for Korean holiday listings, business-day calculations, and tax-calendar queries.
Configuration
Local server config is the same for every client. Copy it into your client’s MCP config file.
Tools
5Saved tool list · updated 6d ago
| Parameter | Type | Required | Description |
|---|---|---|---|
| year | integer | Yes | |
| extraHolidays | array | No | Additional holidays (e.g. from kr_holidays of the public-data server, or company days off) |
Details
From the project README@appmonster/mcp-kr-biz-calendar
MCP server for Korean business dates — no keys, no network. An agent gets:
- Public holidays with computed 대체공휴일 and election days (2025–2028 lunar table built in)
- Business-day math: "3 영업일 후", count business days between dates, next/previous business day
- Tax & payroll calendar per business profile: 부가세 확정·예정, 종합소득세, 법인세, 원천세·4대보험 매월 10일, 지급명세서, 연말정산 — each moved to the next business day when it lands on a holiday (국세기본법 §5)
한국 사업자용 세무·노무 일정과 영업일 계산. 키 없이 바로 동작.
Tools
| Tool | What it does |
|---|---|
kr_list_holidays | 연도별 공휴일 (대체공휴일·선거일 포함) |
kr_is_business_day | 영업일 여부 + 다음/이전 영업일 |
kr_add_business_days | 영업일 더하기/빼기, 두 날짜 사이 영업일 수 |
kr_tax_calendar | 사업자 유형(개인·간이·법인·면세)·고용 여부별 신고 일정, 월/다가오는 N일 필터 |
kr_tax_rule | 일정 항목 설명 (무엇을, 누가, 언제) |
Setup
{ "mcpServers": { "kr-biz-calendar": { "command": "npx", "args": ["-y", "@appmonster/mcp-kr-biz-calendar"] } } }
Examples
- "이번 달 우리 회사가 신고할 거 뭐 있어?" →
kr_tax_calendar {entity: "corporation", employees: true, month: 10} - "오늘 발송하면 영업일 3일 뒤 도착 — 언제?" →
kr_add_business_days {days: 3} - "1/25가 일요일인데 부가세 언제까지?" → calendar already returns
2026-01-26 (shifted)
Coverage & accuracy
- Lunar holidays (설날·추석·부처님오신날) are tabled for 2025–2028. For other years pass
extraHolidaysfrom the public-data server'skr_holidays(official KASI data); the tools say so innote. - Substitute-holiday rules follow the 2023 amendment (all holidays except 신정·현충일; overlaps count).
- Deadlines encode standard rules for a 12월 결산 법인 and calendar-year individuals. Special regimes (성실신고확인, 반기납부, 수정신고) are noted in
what, not computed. Always confirm with 홈택스 notices; this is a scheduling aid, not tax advice.
Development
pnpm --filter @appmonster/mcp-kr-biz-calendar test
Comments
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