Can I use this on Linux or WSL?

Yes, the skill includes a specific 'etax-stealth' script for Playwright CLI to bypass OS detection issues common on Linux/WSL when accessing the NTA website.

What happens if I need to stop in the middle of a filing?

The skill includes an interruption protocol that prompts you to save your progress as an NTA-compatible .data file, allowing you to resume exactly where you left off later.

Is my data pre-validated before entry?

Yes, the skill performs a sanity check on your calculated tax data before starting the browser session to ensure required fields like name, address, and income figures are present.

Does this skill handle the final submission of my tax return?

Yes, it guides the process through to the final electronic signature and submission, though it requires user interaction for physical My Number card authentication.

e-Tax Japanese Tax Filing Automation

Name: e-Tax Japanese Tax Filing Automation
Author: kazukinagata

bykazukinagata

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323

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浏览器自动化

Automates the electronic filing of Japanese tax returns by guiding browser-based data entry on the official NTA website.

The e-tax skill is a specialized automation tool designed to streamline the Japanese tax filing process (Kakutei Shinkoku). It functions as a bridge between calculated financial data and the official National Tax Agency (NTA) Tax Return Preparation Corner. By utilizing browser automation via Claude in Chrome, Antigravity, or Playwright, it automates the tedious entry of business income, expenses, and Blue Return (Ao-iro) data. The skill features robust state management, allowing users to safely pause and resume filings using official .data files, and provides structured guidance for physical authentication steps like My Number card QR code scanning.

主要功能

01Automated OS spoofing (etax-stealth) for seamless operation on Linux and WSL environments.

02Step-by-step guidance for Blue Returns, Income Tax, and Consumption Tax filings.

03Integrated interruption and resume protocol with .data file persistence management.

04Automated data entry for the NTA Tax Return Preparation Corner via browser agents.

05Support for multiple automation backends including Claude in Chrome and Playwright CLI.

06323 GitHub stars

使用场景

01Automating the transfer of calculated business records into the official electronic filing system.

02Navigating complex Japanese tax forms for sole proprietors and freelancers automatically.

03Managing multi-step filing sessions that require periodic physical authentication or manual review.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add kazukinagata/shinkoku e-tax

For use in Claude.ai and ChatGPT

Download Skill