You say that obviously not knowing that TradeStation and the like are available. And was the OP asking about online transfers by banks? Well the 101st volume leader last Friday traded 4 million shares at around 1000 yen. More misleading negativity! And you seem to be speaking from the standpoint of being able to trade through a local broker and claim commissions are too high to day trade. Yet you don't seem to know that even if you pay commissions, they can be as low as ￥80. Or you can use a broker that charges ￥0 commission for margin accounts.
Some years ago I lived in Japan and looked for brokers who allowed me to do short-selling of stock. Both IB Japan and a local broker (I forgot the name) didn't allow me to do that. Does kabu.com allow short-selling of stock for residents in Japan? If so, what do they charge for the stock you borrow for short-selling a stock? For example a stock which has a large daily trade volume?
Well so far nothing gives an indication that you know anything about Japan other than your claim you live(d) there. I provided a long list of market internals that are hostile to day trading Japanese stocks.
Why they didn't let you trade, I can't say. They should have given you the reason. Unemployed, didn't have sufficient funds to open a margin account, chose a stock that was not eligible for short selling, or whatever else the reason might have been. Most of the brokers promote margin trading. The interest rate is anywhere from 0% to around 3% depending upon how you choose to trade.
As low as 80 yen. On a 1000 yen stock that's 8%. Whichever other broker you find that offers cheap commission either they sell order flow which totally fuxxs up your order fills or you still pay a multiple in commission than other European or US market executions. And please admit at least that there is a mandatory transaction tax. Another barrier of entry. You seem to be the one who knows little to nothing about this market
Only brokers that have an agreement with Nomura will allow access to a decent lending book. All others are total crap. Trust me. Sign up for a trial and see for yourself. The claims of the other user are totally misleading.
Unemployed? That can be a reason to disable someone to short stocks? Lol. And you are accusing me to present the truth about japan's very funny sense of logic? Let me give another perfect example of Japan's twisted logic : vagina exposure is strictly prohibited in Japanese adult movies and must be masked with "mosaik". Anal exposure is 100% OK and perfectly fine to even expose children to. Awesome. Why I mention that? Because the twisted logic of Japanese culture directly feeds into absurd decisions by FSA, the regulatory body, MoF and others who allow addictive gambling everywhere but declare day traders the enemy of the state. Give it a rest pal, I can run circles around your arguments.
Yeah well even though I've been living here in Japan for half a century, I guess I don't know anything about the place. And I showed the OP and those who are interested that your claims were misleading.
By the way, the other user did not ask about margin rates. He asked about borrow rates. Its perfectly apparent now you have no clue neither about what the other guy was asking nor what you are talking about yourself. To the other user: if you can locate decent inventory then lending rates are on a comparable level with other markets. The exact rate of course depends fully on demand, availability, the quality of the lending book, the sec lending brokers interest,....