---
name: south-korea-references
description: Primary source references and related open-source projects for this jurisdiction.
license: AGPL-3.0-or-later (code) / OpenAccountants Guide License v1.0 (content)
metadata:
  source: openaccountants
  jurisdiction: KR
  category: tax
  quality: source-cited draft
  openaccountants_url: "https://openaccountants.com/skills/south-korea-references"
  obligation: OTHER
---

# South Korea — Related Open-Source Projects

> **General reference only.** This skill is general tax/accounting reference material for AI-assisted workflows. It has not been reviewed for any specific person's facts, documents, elections, deadlines, residency, filing status, or local procedures. Do not rely on it to file, pay, amend, or take a tax position without review by a qualified professional in the relevant jurisdiction.

OpenAccountants is AGPL-3.0. MIT, Apache-2.0, GPL-3.0, and AGPL-3.0 content can all be incorporated with attribution. Projects below are license-compatible unless noted otherwise.

## tax-ui-kr

- Repository: [kimtoma/tax-ui-kr](https://github.com/kimtoma/tax-ui-kr)
- License: verify before reuse
- Language: Korean
- Scope: Year-end settlement (연말정산) PDF parser with AI chat analysis. Parses 원천징수영수증 (withholding tax receipts) and visualises 소득공제 (income deductions) and 세액공제 (tax credits).
- Why it matters: Directly addresses the 연말정산 workflow that most Korean salaried workers go through annually. The PDF parsing and deduction visualisation are practical features.
- Integration approach:
  - Reference for 연말정산 document structure, 소득공제/세액공제 categorisation, and Korean tax receipt parsing patterns.
  - Treat as reference-only until the license is confirmed.

## korean-tax-calc

- Repository: [chapoleon/korean-tax-calc](https://github.com/chapoleon/korean-tax-calc)
- License: verify before reuse
- Language: Korean / English
- Scope: 2026 Korean tax calculations including severance pay (퇴직금), four major social insurances (4대보험: 국민연금, 건강보험, 고용보험, 산재보험), personal income tax, and gross-to-net computation. Published as an npm package.
- Why it matters: Covers the full payroll cycle from gross salary through social insurance deductions to net pay, which is essential for Korean employment tax workflows.
- Integration approach:
  - Reference for 4대보험 contribution rates, PIT bracket calculations, and 퇴직금 tax treatment.
  - Treat as reference-only until the license is confirmed.

## KoSimpleTax

- Repository: [hyeonki-min/kosimpletax](https://github.com/hyeonki-min/kosimpletax)
- License: MIT
- Language: Korean / English
- Scope: Python payroll tax calculator based on the 근로소득 간이세액표 (simplified withholding tax table) published by NTS (국세청).
- Why it matters: MIT-licensed implementation of the official NTS withholding tables, which are the standard reference for Korean payroll tax withholding.
- Integration approach:
  - MIT is fully compatible. Withholding table logic and rate schedules directly usable.
  - Reference for 근로소득 간이세액표 structure and monthly withholding calculations.

---

_Source: [OpenAccountants](https://openaccountants.com/skills/south-korea-references) — open tax Guides for AI, reviewed by named CPAs/CAs/EAs. Quality: **source-cited draft**. For always-current figures and named-accountant backing, connect the OpenAccountants MCP server (`openaccountants-mcp`)._