Does this skill support the Japanese Invoice System?

Yes, it specifically includes logic for the '20% Special Provision' (2-wari tokurei) applicable to businesses that became taxable entities due to the Invoice System.

What tax filing methods are supported?

The skill supports three primary methods: the 20% Special Provision, Simplified Tax (Kanni kazei), and the Principal Tax (Honzoku kazei) method.

Can I use this skill for corporate tax filing?

This skill is primarily optimized for individual business owners (Kojin Jigyo) in Japan following the standard January to December fiscal year.

How does it handle different tax rates?

It accurately categorizes transactions into standard 10% and reduced 8% tax rates based on your ledger's tax classification rules.

Does it directly submit to e-Tax?

The skill prepares the calculations and summaries required for e-Tax; the final submission is intended to be handled via the /e-tax skill using Claude in Chrome.

Japan Consumption Tax Assistant

Name: Japan Consumption Tax Assistant
Author: kazukinagata

bykazukinagata

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323

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Productivity & Workflow

Calculates Japanese consumption tax (Shohizei) and determines the optimal filing method based on ledger data and invoice system rules.

The consumption-tax skill is a specialized component of the Shinkoku automated tax filing agent designed for Japanese sole proprietors and freelancers. It automates the complex process of calculating consumption tax liability by analyzing ledger data and determining eligibility for various filing methods, such as the 20% Special Provision (2-wari tokurei), Simplified Tax (Kanni kazei), and Principal Tax (Honzoku kazei). By accurately distinguishing between 8% and 10% tax rates and integrating with existing project configurations, it provides a comprehensive tax summary and generates progress reports ready for e-Tax input, significantly reducing the manual overhead of tax compliance.

Key Features

01Generates detailed Markdown progress reports for session continuity and e-Tax preparation.

02323 GitHub stars

03Tax-efficiency comparison tool to visualize the most favorable filing method.

04Seamless integration with shinkoku.db and local ledger files for automated data extraction.

05Automated determination of filing eligibility for 20% Special, Simplified, and Principal tax methods.

06Precise calculation of tax amounts across standard (10%) and reduced (8%) tax rate categories.

Use Cases

01Calculating annual consumption tax totals from ledger entries for year-end tax filing.

02Determining if the 20% special provision is applicable after registering for the Japanese Invoice System.

03Comparing tax liabilities between simplified and principal methods to optimize business expenses.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add kazukinagata/shinkoku consumption-tax

For use in Claude.ai and ChatGPT

Download Skill