At the time of final return, various expenses necessary for investing in foreign exchange margin trading will be deducted from the profit obtained as expenses. Then, if you can not make a profit However, please make a final tax return. If you declare, there is a fixed rule that you can carry over the amount of loss over the next three years, so if you have a prospect that loss will turn into profit one after another, it is still important to file a final tax return You can say that. How much money you have to pay for starting SEO investment is to deposit money called minimum margin or minimum deposit with the merchant, and the amount will change depending on the SEO dealer you want to use. As a concrete amount of money there are companies with 100 yen or companies with 50,000 yen or 100,000 yen are not rare. Another thing is that the number of the smallest trading unit also varies depending on the vendor, there are places where it makes 1000 currencies, there are also dealers with 10000 currencies becoming expensive transactions, those who are new to SEO investment can trade in 1000 currency units If you leave it to a place, the big mistake is along the fingers.