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In stock investment, it is impossible to think that "the tax will be reduced if you spend the study fee".

The sales gain of listed shares etc. is treated with tax declaring, and it does not deduct a wide range of expenses such as business. It is dangerous to spend books,セミナー, and communication expenses.

Exp s that are easy to misunderstand by investors

Frequently Questions

支出Notes
InvestmentAs a general rule, it is not limited to the transfer gain of shares
Seminar feeIndividual investments without business need careful decisions
Contact UsIt is difficult to segment with private
PCWe carefully check tax handling even for investment
Purchase feeIt may be related to the acquisition cost or transfer cost

"All expenses from investing" is a very dangerous idea.

Stock investment is different from business income

In the individual business, there is a way to make the necessary expenses to gain sales.

However, a general individual listed share investment is treated as a tax return tax as a transfer income etc. of listed shares. It is not a premise to deduct expenses widely as a business.

For this reason, it is important not to collect large amounts of receipts for tax saving purposes, but to accurately leave materials related to tax calculations such as transaction reports, acquisition costs, and sale fees.

3 more important management

The following three priority managements are:

Management ItemsReason
Acquisition priceBecome the foundation of transfer profit calculation
Sale fee and transaction costmay be related to profit and loss calculation
Annual ReportBecome a basis for declaration and profit and loss

Although there are many parts that the securities company calculates in a specific account, it is important to check the acquisition cost in general accounts, transfers, inheritance, and old stocks.

  • It is not possible to pay any investment book or seminar fee
  • General stock investment is different from business income
  • Management of trading fees, acquisition costs and annual trading reports is crucial
  • Exp s that are difficult to judge are checked by tax office or tax accountant

The most important part of the tax investment is to use the profit and loss, deductions, NA, and account segments correctly from the idea of "decrease by expenses".

出典

This article is based on the information of the National Tax Agency on the transfer income of shares, etc. and taxation of declaration separation.

  • Date: 2026-05-23
This article is for educational and informational purposes only, based on public information. It is not a recommendation or solicitation to buy or sell any specific security or financial product. Although care is taken with accuracy, the content and future investment outcomes are not guaranteed. Final investment decisions should be made at your own judgment and responsibility.