The Most Efficient and Precise Way to Prepare Accounting Books to Suit Japanse Tax Laws

【Koshida Accounting Firm Column Date:


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Hello, my name is Taisei Koshida, and I am a certified public accountant and tax accountant.

I aim to assist non-Japanese business owners who need help with reading or writing in Japanese. If you find the Japanese tax return system challenging, I can help you with your tax filings.



When you prepare an accounting book, you can do both precisely and efficiently if you do the below way.

1. Main Three Sources of Preparing Books

(1)The Information on Bank Books

It is the leading information for preparing accounting books, including payments from clients, payments to your purchases, outsourcings, salary to your employees, and so on.


(2) The Information on Payments by Cash

If you pay in cash, receipts are the information of your payments.


(3) The Information on Payments by Credit Cards

If you pay by one, monthly credit card details are sources for preparing books.


2. The Hint for Efficient Work

(1) Reducing Payments in Cash

If there are many receipts, it must lead to many efforts to enter them into accounting software or something. If you make most of your transactions with banks and credit cards, those efforts save the most minor level.


(2) Less Banks Less Works

Most banks have web systems, and you can download data from bank books. So, you don’t need to enter information from bank books. It is a very effective way to prepare books. However, if you use many bank accounts, that leads to many troubles. If you use a few bank accounts, your problem is minor.


(3) Using Credit Cards Is Efficient

Also, credit card monthly data can be downloaded. Therefore, you can save your time by avoiding entering transactions by yourself. But there is one thing you have to take care of. It would be best if you preserved all receipts, including payments by credit cards, under Japanese consumption tax law. In addition, generally, you have to check all your costs to see whether the payee is an Invoice registered business.

If you want more information about the Japanese Invoice Tax System, please refer to the blog below.


3. If You Want to Asure Fully Individual Blue Form 650,000 Yen Deduction

The qualification of this deduction requires businesses to double-entry bookkeeping. Entering bank books is the foundation of that.



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