What do I need to use Japan Tax Return (確定申告)?

Income; Employers; Deductions to claim; Tools; Last year.

Is Japan Tax Return (確定申告) free to use?

Yes — run it free in the browser playground (no API key needed for the sponsored trial, or bring any provider key), or install it into Claude Code, Cursor, ChatGPT and more via npx pm-claude-skills. MIT-licensed and open source.

Japan Tax Return (確定申告)

Q: How do I know the Japan Tax Return (確定申告) output is good?

The skill verifies itself against its own quality checks: The need to file is decided from the person's facts before any steps are given; Every threshold, date and form is marked to confirm with the NTA; The ふるさと納税 one-stop cancellation is stated whenever a return is filed; Side-income expenses are separated from personal spending.

🔵 Stable🕐 updated 2026-10-05 ✅ 4.8/5 🔷 SkillSpec L3 pm-japan

Use when asked 確定申告のやり方, do I need to file a tax return in Japan, how do I claim medical expense deduction, ふるさと納税の確定申告, 副業の確定申告, how to file with e-Tax, or 日本报税怎么弄. Produces whether the person must or should file, the income and deductions to declare, a step-by-step filing plan with e-Tax or on paper, the documents to gather, and the deadlines and payment options to confirm with the National Tax Agency.

▶ Run it free — no key needed 📝 Grade your existing draft ⬇ Add to Claude (works in Duet) 📱 Use as an app View SKILL.md ↗ What changed

🗣 Say this to your agent

“副業で年30万円くらい稼いだ。確定申告は必要？”“医療費が15万円かかった。医療費控除のやり方を教えて。”“How do I file my Japanese tax return with e-Tax? I'm a freelancer.”“在日本做副业要报税吗？怎么用 e-Tax？”

What to give it

▸Income — salary (from the 源泉徴収票), side or freelance income and expenses, pensions, investment income outside NISA, rent

▸Employers — how many, and whether year-end adjustment was done

▸Deductions to claim — medical expenses, ふるさと納税, housing loan (first year), donations, insurance not claimed at work

▸Tools — マイナンバーカード and a smartphone or card reader for e-Tax, or paper

▸Last year — whether they filed, and as blue (青色) or white (白色) for business income

✅ The bar it holds itself to

Every skill in this library self-verifies — these are this skill's own quality checks, straight from its definition.

✓The need to file is decided from the person's facts before any steps are given

✓Every threshold, date and form is marked to confirm with the NTA

✓The ふるさと納税 one-stop cancellation is stated whenever a return is filed

✓Side-income expenses are separated from personal spending

✓The output says it is information, not tax advice

⚠️ What it refuses to do

**Assuming an employee never needs to file.** Side income, two jobs and refunds change that.

**Filing and forgetting the one-stop donations.** They must all go on the return.

**Claiming personal costs as business expenses.** It invites a correction with penalties.

**Missing the deadline for a refund-only return.** Refund claims have their own time limit; confirm it.

Install

npx pm-claude-skills add --agent claude   # or codex · cursor · gemini · hermes
# or one-line MCP (every skill, any client):
claude mcp add pm-skills -- npx -y -p pm-claude-skills pm-claude-skills-mcp

Related skills

🔌 Embed this skill

Drop this on your blog, docs, or site — it renders a "Run this skill" card:

<div data-pm-skill="jp-tax-return"></div>
<script src="https://mohitagw15856.github.io/pm-claude-skills/embed.js" async></script>

💬 Discussion

Japan Tax Return (確定申告) is one of 1326 open-source professional AI agent skills — all SkillSpec L3. Try them all in the browser · ⭐ Star on GitHub · Browse the full catalog