Segregated management, the Japan Investor Protection Fund’s ¥10m ceiling, what is and is not protected, and how to verify registration.
Japanese securities firms must keep customer assets segregated from their own, so if a firm fails those assets should ordinarily be returned; if segregation failed, the Japan Investor Protection Fund can compensate eligible customers up to ¥10m — but neither protects against market losses.
The primary protection is structural. Japanese securities firms are required to segregate customer assets — cash and securities — from the firm’s own assets. Because your holdings are not the firm’s property, if the firm fails while segregation has been properly maintained, your assets should ordinarily be returned or transferred to another institution rather than lost in the bankruptcy.
This is very different from a bank deposit, which is a loan to the bank. In a properly run brokerage, your shares and funds remain yours; the firm is only the custodian and intermediary.
Segregation can, in rare cases, fail — through fraud or error. For that residual risk, the Japan Investor Protection Fund (JIPF) exists: if customer assets cannot be returned because segregation failed, JIPF can compensate an eligible customer up to ¥10m. It is a backstop for the failure of the safekeeping system, not routine insurance for every loss.
Critically, JIPF does not compensate normal market losses, an issuer defaulting on your bond, or a fund’s price falling. If your investment simply drops in value, that is investment risk, entirely outside the scope of investor protection.
Protection assumes a legitimately registered firm. Before transferring money, verify the firm in the FSA’s registry of financial instruments business operators and, where applicable, JSDA’s member list. Registration proves legal authorization to operate; it does not guarantee investment performance or the wisdom of any product.
A crucial modern caution: a legitimate brokerage registration does not make a social-media account or website claiming to represent it legitimate. Scammers clone brand names and impersonate real firms. Confirm you are dealing with the genuine, registered entity — not just a familiar-looking name — before sending funds or documents.
Brokerage (NISA/iDeCo) · Rakuten Securities
A leading low-cost brokerage for NISA and index-fund investing, integrated with Rakuten points and Rakuten Bank.
Fees: Many domestic funds and trades are low- or no-commission — verify current fee schedule.
Brokerage (NISA/iDeCo) · SBI Securities
Japan’s largest online brokerage by accounts, with a very broad low-cost fund lineup and full NISA/iDeCo support.
Fees: Many trades and funds are low- or no-commission — verify current fee schedule.
Brokerage (NISA/iDeCo) · Monex
An established online brokerage often chosen for US-stock access and research tools, with NISA and iDeCo support.
Fees: Commissions vary by product; some funds/trades are low-cost — verify current schedule.
This is education, not a recommendation. Most beginners research low-cost, broadly diversified index funds — for example all-country (全世界株式) or S&P 500 trackers — rather than picking individual stocks, because low fees and diversification are within your control while returns are not. Understand that values fall as well as rise, match the risk to your time horizon, and never invest money you may need soon.