Complete Timee & Gig Work Tax Guide 2026: Side Job Tax Filing in Japan

Disclaimer: This article is for general informational purposes only and does not constitute tax or legal advice. Please consult a qualified tax professional (税理士 / zeirishi) for your specific situation. Information is current as of January 2026. Disclosure: This article is published by Denpyo, a receipt and expense management service.

Introduction

"I started a side job on Timee, but do I need to file a tax return?" "Will my main employer find out about my gig work income?" "No tax has been withheld—is that okay?"

Timee, Sharefull, Shotworks, Mercari Hallo... In recent years, the number of people earning extra income through sukima baito (gap-time work) and gig work has surged in Japan. However, if you work without understanding taxes, you risk receiving unexpected tax bills later or having your side job discovered by your employer.

What you'll learn:

• How Timee income is taxed (treated as salary income)
• When you need to file a tax return
• The residence tax trap and how to handle it
• How to prevent your employer from finding out
• What qualifies as deductible expenses
• Impact of the 2026 tax reform

1. Tax Basics for Timee Income

1.1 Timee Is Treated as "Salary Income"

Money earned on Timee is treated as "salary income" (給与所得 / kyūyo shotoku). This is because Timee operates on a system where you sign a direct employment contract with each company for each job.

Source: Timee Official

This distinction is crucial for the "ordinary collection of residence tax" explained later.

1.2 Why No Tax Is Withheld

"I worked on Timee but no tax was withheld?" is a common question. This is because withholding is not required when daily pay is ¥9,300 or less.

Source: NTA Tax Answer No.2514

2. When You Need to File [Checklist]

2.1 If You're an Employee Doing Timee as a Side Job

Source: NTA Tax Answer No.1900

2.2 If Timee Is Your Main Job

2.3 If You're a Student Working Timee

2026 Change: Working Student Deduction income limit relaxed from ¥750K to ¥850K.

3. Beware the Residence Tax Trap! [Critical]

3.1 Residence Tax Filing Required Even If No Income Tax

"No tax return needed since side income is under ¥200K" ≠ No residence tax filing needed!

There is no "under ¥200K = no filing needed" rule for residence tax (住民税 / jūminzei).

Source: Local Tax Act Article 317-2

3.2 What Happens If You Forget Residence Tax?

1. Back taxes assessed: You'll receive a residence tax bill from your municipality
2. Late fees accrue: Penalties apply after the deadline
3. High risk of employer discovery: Increased payroll-deducted tax alerts your company's accounting department

3.3 How to File Residence Tax

If you don't file an income tax return, you must file residence tax separately at your municipal office.

1. Contact your municipality's tax office
2. Obtain the residence tax form (often downloadable)
3. Attach your withholding slip (from the Timee app)
4. Deadline: Around March 15 annually (varies by municipality)

4. How to Prevent Your Employer from Finding Out

4.1 The Cause of Discovery: Residence Tax

The biggest reason side jobs get discovered by employers is residence tax. After tax filing, residence tax including side income is reported to your company, and the accounting department notices the tax amount seems high for your salary.

4.2 Separate with "Ordinary Collection"...But Caution for Timee

Since Timee is salary income, ordinary collection separation is often not possible.

Source: Local Tax Act Article 321-3

4.3 Ways to Reduce Discovery Risk

1. Consult your municipality: Some may allow ordinary collection if you ask during filing
2. Keep side income small: Keep the tax increase within margin of error
3. Switch to a side-job-friendly company: The fundamental solution

5. How to Get Your Withholding Slip

You can easily get it from the Timee app:

1. Open the Timee app
2. Tap "My Page"
3. Select "Withholding Slip"
4. Choose the year and download

6. What Can Be Claimed as Expenses

Since Timee is salary income, you generally cannot claim individual expenses. Salary income automatically receives the "Salary Income Deduction," so there's no concept of itemizing individual expenses.

7. How Will the 2026 Tax Reform Change Things?

The basic deduction expands from the 2026 tax filing.

Lower-income gig workers see further tax relief with this expansion.

Summary

5 Things to Remember:

1. Timee is "salary income" - Different treatment from Uber Eats
2. No withholding ≠ tax-free - Taxes may come later
3. Residence tax filing needed even without income tax - Residence tax is separate even under ¥200K
4. Ordinary collection is difficult for salary income - Limited ways to prevent employer discovery
5. Get withholding slips from the app - Essential for tax filing

References

1. Timee Official: Tax Calculation for Side Job Income
2. Timee Lab: Do Company Employees Need to File Tax Returns?
3. NTA Tax Answer No.1900
4. NTA Tax Answer No.2514
5. Local Tax Act

Last updated: January 2026
Author: Denpyo Content Team