The 5 Critical Mistakes Foreign Founders Make After Incorporating in Japan
- Mamiko Yamamoto
- Mar 21
- 5 min read
(And How to Avoid Costly Tax Problems)
Every year, many foreign entrepreneurs successfully incorporate a company in Japan.
They receive their Certificate of Registered Matters, celebrate the new business, and believe the difficult part is over.
In reality, incorporation is only the beginning.
The most serious compliance mistakes often happen after the company is registered.
Missing just a few required notifications can lead to:
• Tax penalties• Loss of valuable tax benefits• Problems opening bank accounts• Serious compliance risks later on
If you have recently incorporated a company in Japan, understanding the following obligations can save you significant time, money, and stress.
Mistake #1: Not Notifying the Tax Offices
Many founders assume that once their company is registered with the Legal Affairs Bureau, government agencies automatically receive that information.
Unfortunately, that is not how the system works in Japan.
After incorporation, companies must proactively notify several government offices.
In most cases, three different authorities must be notified.
1. National Tax Office (Zeimusho)
The tax office requires several initial filings, including:
• Notification of Incorporation• Notification of a Salary-Paying Office• Application for Blue Return Tax Status
Among these, the Blue Return Application is particularly important.
Companies with Blue Return status can benefit from:
• Carrying forward tax losses (up to 10 years)• Greater flexibility in expense deductions• Improved tax planning opportunities
However, this application must generally be submitted within three months after incorporation.
Missing this deadline means losing important tax benefits for the entire fiscal year.
2. Local Tax Office (Prefecture and Municipality)
In addition to the national tax office, companies must notify their local prefectural and municipal tax authorities.
These filings establish the company for corporate inhabitant tax purposes.
For companies located in Tokyo, this usually means filing notifications with the Tokyo Metropolitan Government and the local ward or city office.
Many foreign founders are unaware that local tax filings are separate from national tax filings.
3. Social Insurance Office (Nenkin Office)
In Japan, corporations are generally required to enroll in the social insurance system.
This system includes:
• Health Insurance• Employee Pension Insurance
Many foreign founders assume this requirement only applies once employees are hired.
However, even a single-person company may be required to enroll if the director receives compensation.
Social insurance procedures must be submitted by a licensed social insurance and labor consultant (sharoushi).
Tokyo Advisory does not submit these filings on behalf of clients.However, we provide guidance and practical support, including:
• Explaining the enrollment process• Preparing required company information• Coordinating with licensed social insurance specialists when necessary
This helps founders complete the process smoothly while ensuring compliance with Japanese regulations.
Mistake #2: Believing the "Zero Profit = Zero Tax" Myth
One of the most common misconceptions among new founders is this:
“If my company has no revenue yet, I don't need to worry about taxes.”
This is incorrect.
In Japan, the moment a company is incorporated, it becomes subject to Corporate Inhabitant Tax.
This includes a fixed component known as the Per Capita Levy (均等割 / Kintowari).
This tax applies even if:
• Revenue = ¥0• Profit = ¥0• No transactions have occurred• The company bank account has not been opened
Simply having a registered corporate presence in a municipality creates this tax obligation.
For small companies, this minimum tax is typically around:
¥70,000 per year
As a result, even inactive companies must still:
• File annual corporate tax returns• Pay the minimum inhabitant tax
This surprises many first-time founders.
Mistake #3: Ignoring Compliance Because the Company Is Dormant
Some founders incorporate a company but delay starting business activities.
They assume they can address tax filings later once operations begin.
However, Japanese tax rules do not treat dormant companies differently.
Even if a company has no business activity, required tax filings must still be submitted.
Failing to do so can lead to several problems.
Late Filing Penalties
Late filings may result in:
• Additional tax penalties• Late filing surcharges• Interest charges
These costs can accumulate over time.
Loss of Blue Return Status
If filings are missed, a company may lose its Blue Return status, resulting in:
• Reduced tax benefits• Loss carryforward restrictions• Less flexibility in tax planning
Banking and Credibility Issues
Japanese banks perform strict compliance checks when opening corporate accounts.
Unfiled tax returns or incomplete registrations may make it difficult to:
• Open corporate bank accounts• Secure financing• Work with investors or large business partners
Proper compliance helps build long-term credibility.
Mistake #4: Underestimating "Deemed Dissolution"
If a company remains inactive and fails to maintain required filings for several years, another risk can arise.
The Legal Affairs Bureau may initiate a process known as:
Minashi Kaisan (みなし解散)or Deemed Dissolution.
In certain circumstances, the government may legally dissolve a company that appears to have been abandoned.
While this typically occurs after extended inactivity, many foreign founders are unaware that this rule exists.
Maintaining proper filings helps avoid this situation.
Mistake #5: Waiting Too Long to Seek Professional Advice
Japan's tax and compliance system can be complex, particularly for foreign founders.
Deadlines are strict, and many forms are available only in Japanese.
Missing a single filing can create complications later when preparing the first corporate tax return.
Many founders assume their accountant will automatically handle all initial registrations.
However, if the initial setup filings were never submitted, the issue may only become visible when the first tax return is prepared.
At that stage, it may already be too late to apply for certain tax benefits.
Setting Up Compliance Correctly From Day One
Handling the required registrations properly after incorporation helps ensure:
• Access to Blue Return tax benefits• Correct tax registration with national and local authorities• Smooth banking relationships• Clean financial records for investors and business partners
Taking the time to establish compliance early can prevent serious issues later.
Tokyo Advisory — Japan Tax Setup Services
Tokyo Advisory supports foreign founders, startups, and freelancers with post-incorporation tax setup in Japan.
We assist clients in completing the required tax notifications and registrations so they can focus on growing their business.
Corporate Starter Package
🚀 ¥150,000 (excluding tax)
Comprehensive tax setup support for newly incorporated companies.
Includes:
• Notification of Incorporation• Initial Tax Office Notifications• Application for Blue Return Tax Status• Registration as a Consumption Taxable Enterprise (including Simplified Tax option)• Tax Representative Setup• Tax Payment Proxy Setup• Invoice System Registration
A La Carte Services
Service | Price (excl. tax) |
Notification of Incorporation / Changes | ¥40,000 |
Application for Blue Return Tax Status | ¥25,000 |
Registration as a Consumption Taxable Enterprise | ¥40,000 |
Tax Representative for Foreign Corporations | ¥50,000 |
Tax Payment Proxy Setup | ¥20,000 |
Invoice System Registration | ¥50,000 |
Individual / Sole Proprietor Starter Package
🌱 ¥100,000 (excluding tax)
Tax setup support for freelancers and sole proprietors.
Includes:
• Notification of Opening a Sole Proprietorship• Application for Blue Return Tax Status• Notification of Blue Return Family Employee Salary (if applicable)• Tax Representative Setup (if necessary)• Tax Payment Proxy Setup• Invoice System Registration
A La Carte Services
Service | Price (excl. tax) |
Notification of Opening a Sole Proprietorship | ¥30,000 |
Application for Blue Return Tax Status | ¥25,000 |
Notification of Blue Return Family Employee Salary | ¥20,000 |
Tax Representative (for Non-residents) | ¥50,000 |
Tax Payment Proxy | ¥30,000 |
Invoice System Registration | ¥50,000 |
Final Advice for Foreign Founders
Incorporating a company in Japan is an exciting step.
However, registration alone does not complete the process.
Understanding the required filings and compliance obligations from the beginning helps ensure your business starts on the right foundation.
For founders unfamiliar with Japan’s tax system, obtaining guidance early can prevent costly problems later.
If you have recently incorporated a company in Japan and want to ensure everything is set up correctly, Tokyo Advisory can help guide you through the process.
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