[2026 Guide] How to Become a Freelance Engineer in Japan: Visas & Earning ¥10 Million

"My current salary as a full-time employee is too low. If I become a freelancer, I could double my income..."

If you are a foreign engineer thinking this, you are absolutely right. In the Japanese IT market, switching from a full-time employee (Seishain) to a freelancer is the shortest route to an annual income of 10 million yen (approx. $67,000 USD). In fact, foreign engineers around me have successfully increased their income by 1.5 times or more after going independent.

However, you face a huge barrier that Japanese people do not: "Residence Status (Visa)" and "Social Credit."

In this article, based on thorough research by the web media "ibis," we will resolve all these anxieties.

We will reveal specific strategies to gain freedom and wealth in Japan, including legal techniques to maintain your "Engineer/Specialist in Humanities/International Services" visa while independent, agents that are "advantageous for visa renewal" for foreigners, and countermeasures for the Invoice System.

Risks and Returns of Becoming a Freelance Foreigner in Japan

First, let's look at reality. Why do so many foreign engineers take the risk to go independent?

Return: 1.5x to 2x Income is Normal

As a full-time employee, 30% to 50% of your unit price (the money the client pays) disappears as the company's margin. If you become a freelancer, you can put this margin—previously deducted as a "stability fee"—into your own pocket. A monthly unit price of 800,000 yen (annual turnover of 9.6 million yen) is not a difficult number for Java or Go engineers with 3 to 5 years of experience.

Risk: The Biggest Risk is "Losing Your Visa"

Japan does not have a residence status named "Freelance Visa." If more than 3 months pass after you leave your company without appropriate procedures, your residence status may be subject to revocation.

Conclusion: With proper preparation, freelance activities are fully possible with your existing working visa.

3 Conditions to Renew the "Engineer" Visa as a Freelancer

Visa application documents and passport

Most engineers hold the "Engineer/Specialist in Humanities/International Services" visa. To renew this as a freelancer (sole proprietorship), you must prove the following three points to the Immigration Bureau.

1. Securing a Contracting Organization (Sponsor)

Legally, you do not need to be employed as a full-time employee by a specific company, but you need a continuous contract with a "contracting organization." If you have multiple clients, the lifeline is whether you can ask your main company (or agent) to stamp the application documents (documents created by the organization of affiliation) at the time of visa renewal.

Note: Some agents take the stance that "we do not cooperate with document creation because there is no employment relationship." Choosing an agent "accustomed to dealing with foreigners," as described later, is extremely important.

2. The 3 Million Yen Wall and Tax Payment

To prove that you can live stably in Japan, you need a total contract amount of at least 3 million yen, ideally 4 million yen or more, in income before expenses. Also, failure to pay Residence Tax and National Health Insurance is fatal in the visa renewal examination. Do not fall behind by even a single yen.

3. Specialization of Work Content

Just because you are a freelancer, you cannot renew your visa by delivering for Uber Eats or doing simple data entry. You need to logically explain in the "Statement of Reasons" submitted at renewal that the work is "engineering work" consistent with your university major or past career.

Top 3 Freelance Agents Recommended for Foreign Engineers

Due to language barriers (such as N1 requirements) and differences in business practices, not all agents are friendly to foreigners. Here are 3 carefully selected agencies based on "stability of visa renewal" and "support for foreigners."

1. Midworks - Gaining Stability Comparable to Full-Time Employment

Midworks logo and engineer

For foreign engineers worried about visa renewal, "Midworks" is the most recommended choice. It is known as a hybrid agent that offers the "best of both worlds": the freedom of freelancing and the security of a full-time employee.

Benefits for Foreigners:

Salary Guarantee System: There is a system where salary (compensation) is paid even if a project ends and there is a gap. This is powerful material to appeal "income stability" to Immigration.
Social Insurance Support: Since they pay an amount equivalent to half of the insurance premiums (like a company would), your take-home pay increases significantly.

For those who say, "I want to be a freelancer, but I'm afraid it will be disadvantageous for visa renewal," Midworks is the strongest partner that allows you to maintain a status close to a full-time employee.

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Get Your Market Value & Free Counseling

How much can you earn with your skills? Consult a professional about visa and tax concerns. Check your market value with a free registration!

Visit Midworks Official Site

2. PE-BANK - Transparency and Regional Projects

If you live outside of Tokyo, "PE-BANK" is a strong option.

Benefits for Foreigners:

Tax Return Support: They support complex Japanese tax processing, preventing visa renewal mistakes due to tax troubles (such as non-payment).
Regional Living OK: With branches nationwide from Hokkaido to Kyushu, even foreign engineers living in rural areas can find projects.

The margin rate (8-12%) is public, and the clean operation where you don't have to worry about being exploited is also attractive. However, the payment site is long (paid the month after next), so you need to have ample living expenses for the initial period.

Ally of Regional Engineers

If you want nationwide coverage and low margins to maximize take-home pay.

Visit PE-BANK Official Site

3. Engineer-Route - Personalized Counseling

"Engineer-Route" counselors are former engineers, so technical conversations go smoothly. Instead of the standardized response of large firms, they look for projects tailored to individual circumstances (such as visa expiration dates or family situations), making it recommended for those who value career consultation.

If you are thinking, "I'm anxious about going independent right away" or "I want to look for a company with good conditions as a full-time employee first," please also check the Complete Guide to Recruitment Agencies in Japan for IT Engineers & Programmers.

For Those Who Want Thorough Consultation

Counselors with engineering backgrounds will stand by your career.

Visit Engineer-Route Official Site

The Traps of "Taxes" and "Invoices" to Know Before Going Independent

Tax calculation and accounting software

To survive as a freelancer in Japan, "knowledge of taxes" is even more necessary than technical skills.

The Terror of Residence Tax

Japanese Residence Tax (Inhabitant Tax) is "post-paid." A high bill based on your annual income from your time as a full-time employee will arrive around June, one year after you become independent. Many foreign engineers run out of funds here. When you receive compensation, be sure to pool 20-30% in a separate account for taxes.

We explain the mechanism of residence tax and troubles that occur when returning home in detail in Why Does Take-Home Pay Decrease in Year 2? The "Post-Payment" Trap of Residence Tax Foreigners Must Know.

Countermeasures for the Invoice System

Currently, Invoice registration is becoming mandatory for many agents and clients. Previously, there was a risk that your "real name would be published" upon registration, but due to system revisions, progress is being made in keeping addresses and other details private.

A bigger problem than that is the complex accounting processing. Japan's tax system is one of the most complex in the world. If you try to do this manually, your time for main work will be stolen. It is an iron rule to introduce cloud accounting software like "freee" to automate invoice issuance and tax returns.

Automate Japan's Complex Taxes

Mistakes in tax returns can be fatal for visa renewal. With freee accounting, you can link your bank account to automatically create books.

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Roadmap to Success: What to Do Before Quitting Your Company

Resigning suddenly is dangerous. Please take the following 3 steps.

Get a Credit Card: When you become independent, your social credit temporarily drops, making it harder to pass screenings. Make a card like Rakuten Card while you are still an employee.
Build a Track Record with Side Jobs: First, take on projects as a side job and build a relationship of trust with clients (a relationship where they will stamp visa documents in the future).
Register with Agents: Have an interview with Midworks or similar agencies to confirm your market value (unit price) with your skill set. Resign only after obtaining the assurance that "there is work even if I quit."

Conclusion

Life as a freelance engineer in Japan is a wonderful career worth the risk. An annual income of 10 million yen and long vacations are within your reach, depending on your skills.

However, to protect the lifeline that is your visa, individual effort has limits. Partner with an agent with generous guarantees like "Midworks," secure a legal safety net, and take the step toward freedom.

We are cheering for your challenge in Japan to lead to great success.

First, Diagnose Your Market Value

If you aim for an income increase while receiving security comparable to a full-time employee, choose Midworks. Consult a counselor about your visa concerns.

Free Consultation with Midworks