日本を離れる外国人向け、脱退一時金（Lump-Sum Withdrawal Payment）の英語セルフサービスパックです。脱退一時金の計算、納税管理人の設定、20.42% の源泉徴収税の還付申告まで、英語で一通り解説。情報源は日本年金機構と国税庁の公式情報。 --- Leaving Japan? You may be entitled to a ¥1.65M+ pension refund (脱退一時金) — but most foreigners take only 80% of it because they skip the 20.42% tax reclaim. This pack walks you through the entire process in English, end to end: ✓ Confirm you're eligible (10-year rule, residency, deadlines) ✓ Decide between lump-sum and totalization (covers all 24 agreement countries) ✓ Calculate exactly how much you'll receive ✓ Set up a 納税管理人 (tax representative) before you leave ✓ Fill the application form correctly the first time ✓ Reclaim the 20.42% withholding via 確定申告 — typically the full amount What's inside: ・Main Guide (22 pages, PDF) — Eligibility, totalization decision, FY2026 calculation tables, 20.42% reclaim mechanics, 2025 reform status ・Interactive Calculator (HTML, works offline) — FY2026-ready ・Tax Representative Checklist (PDF) — step-by-step 納税管理人 setup ・Application Form Walkthrough (PDF) — bilingual annotation of 脱退一時金請求書 Why this pack: ・Saves you ¥336,930 on a typical 5-year claim ・One-time ¥2,500 vs. specialist services charging 10–20% of refund ・Verified against 日本年金機構 + 国税庁 (URL citations included) Not legal or tax advice. Always verify rules with 日本年金機構, 国税庁, or a licensed 税理士 before submitting any application. Format: ZIP (~400 KB) — 4 PDFs + 1 HTML calculator. No subscription. Lifetime access to v1.0.