A Complete Guide to Prop Firms for Domestic FX Traders [2026 Edition]

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かいたい先生


“I’m winning in domestic FX, but I don’t have enough capital to earn big.”

Are you struggling with this problem?

In fact, there is a place that can maximize your “winning potential”.

That is the prop firm.

Shinjo-kun
Shinjo-kun
Teacher, I’ve been hearing a lot about “prop firms” lately, but does it have anything to do with me doing domestic FX?

Professor Kaitai
Professor Kaitai
On the contrary, if you’re winning in domestic FX, you should know about prop firms. Today, I’ll explain the big picture.

This article comprehensively explains all the information that domestic FX traders need to understand prop firms.

✅ What you’ll learn in this article

  • The structure of prop firms and how they differ from domestic FX
  • The “3 misconceptions” that domestic FX users have about prop firms
  • Criteria for determining who is suitable for prop firms and who is not
  • How to start a prop firm (5 steps)
  • Prop firms recommended for Japanese people
  • Tax and incorporation options
  • Risks and precautions to be aware of

【Conclusion】Those who can win in domestic FX should consider prop firms

Let me start by sharing the conclusion.

If you have the “winning potential” in domestic FX, prop firms can be an excellent choice.

💡 Conclusion

Prop firms provide a system where you can trade with the company’s capital.

With a challenge fee of $10,000, you can manage a $100,000 (about 150 million yen) account. There is also zero risk of margin calls. If you have the winning potential in domestic FX, the capital efficiency will improve dramatically.

Your situation Recommended choice
Have winning potential × Capital under 1 million yen Prop firm is the way to go
Have winning potential × Afraid of margin calls Prop firm recommended
Consistently earning over 5 million yen per year Domestic FX is also an option
Not winning yet First, improve your skills

Chapter 1: What is a Prop Firm?

A prop firm (Proprietary Trading Firm) is a business model where the company’s capital is used by traders to trade.

The basic mechanism of prop firms

The process is simple.

  1. Traders take a “challenge” exam (cost: around 10,000 to 100,000 yen)
  2. If they pass the challenge, they are given a “Funded account”
  3. They trade with the company’s capital ($25K to $400K)
  4. 70 to 90% of the profits are paid to the trader

In other words, the ability to trade with a large amount of capital without your own funds is the biggest attraction of prop firms.

Why are prop firms gaining attention now?

  • In overseas markets, they have become the mainstream career path for traders
  • Recognition is rapidly increasing in Japan as well
  • In 2024, the industry leader FTMO was acquired by OANDA, significantly improving credibility

Differences from domestic FX and overseas FX

Item Domestic FX Overseas FX Prop Firm
Capital Your own capital Your own capital Company’s capital
Maximum loss Full amount + margin calls Full amount Challenge fee only
Tax rate Fixed at 20.315% Up to 55% Up to 55% (can be reduced through a corporation)
Leverage Up to 25x 500 to 1000x 100 to 200x

Shinjo-kun
Shinjo-kun
The ability to trade with someone else’s money is an amazing system!
Professor Kaitai
Professor Kaitai
I’ve explained the details in a separate article, so if you’re interested, give it a read.


Chapter 2: The “3 Misconceptions” That Domestic FX Users Have About Prop Firms

“I’m curious about prop firms, but somehow I’m avoiding them” – this is a fact for many people.

The cause is 3 misconceptions.

Misconception 1: “I’ll lose because the tax rate is higher”

It’s true that the profits from prop firms are taxed as “miscellaneous income” at a progressive rate (up to 55%).

Compared to the fixed 20.315% rate in domestic FX, it may appear less favorable at first glance.

However, the difference in capital efficiency often outweighs the difference in tax rates.

Furthermore, by incorporating, you can compress the tax rate to 25-35%.

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