# Who Needs to File a Tax Return in Japan 2026: Complete Checklist

> "Do I need to file a tax return?" 2026 brings significant changes to the basic deduction from tax reforms. A complete checklist guide explaining who needs to file and who doesn't - company employees, freelancers, side job workers, and pension recipients.

- URL: https://denpyo.com/en/blog/who-needs-tax-return-2026
- Published: 2026-01-23
- Updated: 2026-11-07
- Language: en

> **Disclaimer:** This article provides general information about Japanese tax returns for 2026. For specific tax advice, please consult a licensed tax accountant (zeirishi) or your local tax office. Tax laws are subject to change—always verify current requirements at the [National Tax Agency website](https://www.nta.go.jp/english/).

## Introduction: Do I Need to File a Tax Return?

Every year during February and March, many people in Japan wonder: "Do I need to file a tax return (kakutei shinkoku)?" This question is especially important for **2026 (Reiwa 8)** tax returns, as significant changes have been introduced—including the expansion of the "**1.03 million yen wall**" to "**1.78 million yen**."

This comprehensive guide explains who **must file**, who **doesn't need to file**, and who would **benefit from filing voluntarily**. Use our 30-second checklist to quickly determine your filing requirements, then dive into the detailed explanations for your specific situation.

## 30-Second Self-Assessment Checklist

Use this quick checklist to determine if you need to file a tax return in Japan.

### You MUST File If Any of These Apply:

- You are self-employed or a freelancer with business income
- Your annual salary exceeds 20 million yen
- You receive salary from two or more employers
- Your side income exceeds 200,000 yen
- You have rental property income
- You have stock/FX profits (in non-withholding accounts)
- Your pension exceeds 4 million yen OR other income exceeds 200,000 yen
- You received retirement income without submitting the declaration form

### Filing Is Optional But May Benefit You If:

- Medical expenses exceeded 100,000 yen this year
- You donated to 6+ municipalities via Furusato Nozei
- This is your first year claiming the mortgage deduction
- You resigned mid-year without year-end adjustment
- You had stock losses (for loss carryforward)
- You suffered losses from disaster or theft

## Who MUST File: 8 Mandatory Categories

### 1. Self-Employed and Freelancers

If your business income exceeds the **basic deduction (up to 1,040,000 yen for 2026)**, you must file a tax return. For 2026, the basic deduction has been expanded up to 1,040,000 yen, with gradual reduction for higher incomes.

| Total Income | Basic Deduction (2026 and 2027) |
| --- | --- |
| 4.89 million yen or less | 1,040,000 yen |
| 4.89M - 6.55M yen | 670,000 yen |
| 6.55M - 23.5M yen | 620,000 yen |
| 23.5M - 24M yen | 480,000 yen |
| 24M - 24.5M yen | 320,000 yen |
| 24.5M - 25M yen | 160,000 yen |
| Over 25M yen | 0 yen |

### 2. Salary Over 20 Million Yen

Employees earning more than 20 million yen annually are **not eligible for year-end adjustment** and must file a tax return.

### 3. Multiple Employers

If you receive salary from a secondary employer exceeding **200,000 yen annually**, you must file.

| Situation | Filing Required? |
| --- | --- |
| Secondary income ≤ 200,000 yen | No (but residence tax declaration required) |
| Secondary income > 200,000 yen | **Yes** |

### 4. Side Income Over 200,000 Yen

Income from blogs, affiliate marketing, freelance platforms, cryptocurrency, or selling items online that exceeds **200,000 yen** requires filing.

**Important:** Even if under 200,000 yen, you still need to file a **separate residence tax declaration**.

### 5. Real Estate Income

Any income from apartment rentals, parking lots, or vacation rentals (minpaku) requires filing.

### 6. Stock and FX Profits

| Account Type | Filing Required? |
| --- | --- |
| Specific Account (with withholding) | Generally no (yes if offsetting losses) |
| Specific Account (without withholding) | **Yes** |
| General Account | **Yes** |
| NISA Account | No (tax-exempt) |

### 7. Pension Recipients

| Condition | Filing Required? |
| --- | --- |
| Pension ≤ 4M yen AND other income ≤ 200K yen | No |
| Pension > 4 million yen | **Yes** |
| Other income > 200,000 yen | **Yes** |

### 8. Retirement Income Recipients

If you did **not** submit the "Declaration for Receiving Retirement Income" to your employer, you must file a tax return. If you did submit it, filing is generally unnecessary unless you want to claim additional deductions.

## Who Does NOT Need to File

### Regular Employees

- Annual salary is 20 million yen or less
- Receive salary from only one employer
- Other income is 200,000 yen or less
- Completed year-end adjustment

### Pension Recipients

- Public pension income is 4 million yen or less
- Other income is 200,000 yen or less

### Homemakers and Unemployed

- Income is at or below the basic deduction (up to 1,040,000 yen for 2026)
- Only income is from tax-withheld sources

## Optional But Beneficial: 6 Cases for Voluntary Filing

### 1. Medical Expense Deduction

If your annual medical expenses exceeded **100,000 yen** (or 5% of income if income is under 2 million yen), you can claim a refund. The Self-Medication Tax System for OTC medicines also qualifies.

### 2. Furusato Nozei to 6+ Municipalities

The One-Stop Exception only covers **up to 5 municipalities**. If you donated to 6 or more, you must file to claim the deduction.

### 3. First Year of Mortgage Deduction

The **first year** of housing loan deduction requires filing. From the second year, it can be processed through year-end adjustment.

### 4. Mid-Year Resignation

If you quit without completing year-end adjustment, you may be eligible for a **tax refund** on over-withheld taxes.

### 5. Stock Losses

To use **loss offsetting** (against other gains) or **loss carryforward** (up to 3 years), you must file a tax return.

### 6. Disaster or Theft Losses

You can claim the **casualty loss deduction** or relief under the Disaster Tax Reduction Law.

## 2026 Tax Changes: 3 Key Points

### 1. Expanded Basic Deduction (Up to 1,040,000 Yen)

The basic deduction, fixed at 480,000 yen until 2024, is **1,040,000 yen for total income up to 4.89 million yen** in 2026 and 2027 (670,000 yen up to 6.55 million yen, 620,000 yen up to 23.5 million yen). This makes it easier for part-time workers to remain tax-free.

### 2. The "1.03M Wall" Becomes "1.78M Wall"

With the employment income deduction (minimum 740,000 yen) + basic deduction (1,040,000 yen), salary up to **1.78 million yen** is free of income tax (if salary is your only income). The limit for being claimed as a dependent or spouse (total income of 620,000 yen or less) is **1.36 million yen** of salary.

| Item | Until 2024 | 2026 and 2027 |
| --- | --- | --- |
| Employment Income Deduction (min) | 550,000 yen | 740,000 yen |
| Basic Deduction (max) | 480,000 yen | 1,040,000 yen |
| Tax-Free Threshold | 1.03M yen | 1.78M yen (salary only) |

### 3. Filing Period

The filing period for 2026 tax returns is expected to be **February 16 - March 15, 2027**.

## Filing Requirements by Situation

### Employees

| Situation | Filing Required? |
| --- | --- |
| Salary ≤ 20M yen, no side income | No |
| Salary > 20 million yen | **Yes** |
| Side income > 200,000 yen | **Yes** |
| Want medical expense deduction | Optional (refund available) |

### Freelancers / Self-Employed

| Situation | Filing Required? |
| --- | --- |
| Have business income | **Yes** |
| Want 650,000 yen Blue Form deduction | Required (e-Tax) |
| Business loss | Optional (recommended for carryforward) |

### Pension Recipients

| Situation | Filing Required? |
| --- | --- |
| Pension ≤ 4M, other income ≤ 200K | No |
| Pension > 4 million yen | **Yes** |
| Want medical expense deduction | Optional (refund available) |

### Students

| Situation | Filing Required? |
| --- | --- |
| Part-time income ≤ 1.78M yen | No (possible refund if tax withheld) |
| Part-time income > 1.78M yen | **No** if all your salary comes from one employer and other income is 200,000 yen or less (two or more employers can make it necessary) |
| Freelance income | **Yes** |

### Homemakers

| Situation | Filing Required? |
| --- | --- |
| Part-time income ≤ 1.78M yen | No |
| Part-time income > 1.78M yen | **No** if all your salary comes from one employer and other income is 200,000 yen or less (two or more employers can make it necessary) |
| Stock dividends only (with withholding) | No (optional for refund) |

## Frequently Asked Questions

### Q1. What happens if I don't file when required?

**A.** Failing to file when required results in penalties:

- **No-filing penalty:** after a tax audit or assessment, 15% of the tax due up to ¥500,000, 20% of the part from ¥500,000 to ¥3 million and 30% above ¥3 million (for returns due on or after January 1, 2024); 5% if you file voluntarily before any audit notice
- **Late payment interest:** the statutory ceilings are 7.3% a year (first two months after the due date) and 14.6% (after that), but lower special rates apply in practice: 2.8% and 9.1% for 2026 (2.4% and 8.7% for 2022–2025)
- **Severe cases:** Heavy penalty tax (35-40%) or criminal charges

### Q2. If I file income tax, do I still need to file residence tax?

**A.** No. Your income tax return data is shared with your municipality, so a separate residence tax declaration is unnecessary. However, if your side income is under 200,000 yen and you don't file income tax, you **must file residence tax separately**.

### Q3. Is filing difficult? Can I do it myself?

**A.** For employees and pension recipients, filing has become much easier with **e-Tax** and the NTA's online preparation tools. Self-employed individuals may benefit from accounting software. The tax office also offers free consultation during filing season.

### Q4. What if I miss the deadline?

**A.** You can still file after the deadline (late filing), but penalties may apply. For refund claims, you have **5 years** to file without penalties.

### Q5. What if I made a mistake?

**A.** Before the deadline, submit a corrected return. After the deadline, file an **amended return** if tax increases, or request a **correction** (within 5 years) if tax decreases.

## Required Documents Checklist

### Everyone

- My Number Card (or notification card + photo ID)
- Bank account information for refunds
- Previous year's tax return copy (if available)

### Employees

- Withholding tax slip (gensen choshuhyo) from all employers

### Freelancers / Self-Employed

- Income and expense statement or Blue Form financial statement
- Receipts for business expenses
- Copies of invoices and contracts

### For Deductions

- Medical expense receipts and summary
- Furusato Nozei donation receipts
- Mortgage balance certificate and property registration
- Life insurance and earthquake insurance deduction certificates
- Social insurance (pension, health insurance) deduction certificates

## Summary

The 2026 tax year brings significant changes, including expanded basic deductions and the effective raising of the "1.03 million yen wall."

### Key Takeaways

- Freelancers and self-employed individuals generally **must file**
- Side income over 200,000 yen or salary over 20M yen **requires filing**
- Medical expenses and Furusato Nozei (6+ municipalities) can get you a **refund**
- Basic deduction expanded to up to **1,040,000 yen** for 2026
- Filing period: **February 16 - March 15, 2027** (expected)

When in doubt, consult a tax professional or visit your local tax office for guidance.

## Related Articles

- [What Is Kakutei Shinkoku? Complete Beginner's Guide 2026](https://denpyo.com/en/blog/what-is-kakutei-shinkoku)
- [Freelancer's Complete Guide to Blue Form Tax Filing](https://denpyo.com/en/blog/freelance-blue-form-guide)
- [Digital Receipt Management Guide 2026](https://denpyo.com/en/blog/digital-receipt-management)
- [Medical Expense Deduction: How to Apply and What Qualifies](https://denpyo.com/en/blog/medical-expense-deduction-guide)

## References

- [NTA | Filing a Final Tax Return](https://www.nta.go.jp/english/taxes/individual/12006.htm)
- [NTA | Tax Return Information (Japanese)](https://www.nta.go.jp/taxes/shiraberu/shinkoku/kakutei.htm)
- [NTA | Basic Deduction (Japanese)](https://www.nta.go.jp/taxes/shiraberu/taxanswer/shotoku/1199.htm)
- [e-Tax (National Tax Electronic Filing System)](https://www.e-tax.nta.go.jp/)