Denpyo Blog

In-depth guides on Japan tax filing (確定申告), blue return (青色申告) benefits, 電子帳簿保存法 compliance and expense tracking — written for freelancers and small business owners.

Articles in this category

Japan's Electronic Bookkeeping Law & Denpyo: Automate Your Compliance

Japan's Electronic Bookkeeping Law & Denpyo: Automate Your Compliance

How Denpyo automatically satisfies the 3 requirements of Japan's Electronic Books Preservation Act — with practical workflows for freelancers and small businesses.

April 14, 2026
7 min read
Japan Invoice System October 2026 Changes: Consumption Tax Deduction Drops to 50%

Japan Invoice System October 2026 Changes: Consumption Tax Deduction Drops to 50%

The Qualified Invoice System (Tekikaku Seikyu Hakko Houshiki) was introduced on October 1, 2023, and represents a significant overhaul of Japan's consumption tax system. The system's most critical feature is that businesses must retain qualified invoices to claim consumption tax deductions.

April 12, 2026
10 min read
Life Insurance Premium Deduction 2026: Complete Guide to Seimei Hoken Deduction, 3 Categories & ¥120,000 Tax Savings

Life Insurance Premium Deduction 2026: Complete Guide to Seimei Hoken Deduction, 3 Categories & ¥120,000 Tax Savings

If you have life insurance in Japan, you may be eligible for up to ¥120,000 in annual income deductions (seimei hoken-ryō kōjo). This translates to significant savings on both income and residence taxes. Yet many people don't claim this deduction. Proper application often results in tax refunds or reductions worth tens of thousands of yen.

Deduction Guide
February 4, 2026
11 min read
Home Office Deduction (家事按分) Japan 2026: Calculate Work-From-Home Expenses

Home Office Deduction (家事按分) Japan 2026: Calculate Work-From-Home Expenses

Learn how to calculate Japan's home office deduction (kajianbu) for remote workers. Deduct rent, electricity, and internet using floor area or time-based allocation methods.

Deduction Guide
February 3, 2026
5 min read
Receipt Storage Requirements Guide for Japan 2026

Receipt Storage Requirements Guide for Japan 2026

You must keep receipts for a long time even after filing your taxes in Japan — 7 years if you are a blue return filer, 5 years for white return filers. This guide covers valid documents, digital storage rules, and what to do if you lose a receipt.

February 2, 2026
13 min read
Expense Categories (勘定科目) Guide for Japan Freelancers 2026

Expense Categories (勘定科目) Guide for Japan Freelancers 2026

Complete guide to Japanese expense categories (kamoku) for tax filing. Learn how to classify receipts correctly for travel, supplies, entertainment & more.

February 1, 2026
7 min read
2026 Housing Loan Deduction Guide | First-Year Filing for Japan Mortgages

2026 Housing Loan Deduction Guide | First-Year Filing for Japan Mortgages

Bought a home in Japan? Learn how to claim the housing loan deduction in your first year. Required documents, calculation methods, and e-Tax filing steps.

Deduction Guide
January 28, 2026
11 min read
Tax Filing After Resignation 2026 | How Much Refund for Mid-Year Quitting? | Denpyo

Tax Filing After Resignation 2026 | How Much Refund for Mid-Year Quitting? | Denpyo

Quit your job mid-year in Japan? Get tax refunds through filing. 2026 refund simulation, required documents, e-Tax filing guide. Covers retirement income tax and mid-year resignation procedures.

January 27, 2026
10 min read
2026 Japan Crypto Tax Guide: Calculation Methods & Tax Rates Explained | Denpyo

2026 Japan Crypto Tax Guide: Calculation Methods & Tax Rates Explained | Denpyo

Complete guide to filing cryptocurrency taxes in Japan 2026. Bitcoin, Ethereum profit calculation, tax rates up to 55%, NTA tools, and common mistakes to avoid.

January 26, 2026
14 min read