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手続きation is a procedure to organize income and tax for one year and to file it to the tax office.
It may be necessary for sub-operation, investment, medical expenses deduction, hometown tax payment, etc.
What is the final declaration?
The final declaration is a procedure to collect income from January 1st to December 31st every year and calculate income tax etc.
Normal declaration period is from February 16th to March 15th the following year. The所得ling of income tax for the seventh year of Reiwa is guided from February 16 to March 16, 2026.
This article is a general tax system and is not an individual tax decision. Please check the latest National Tax Agency information as the system content may change.
T who are likely to need a final declaration
Here are some examples:
| Case | See Points |
|---|---|
| Freeス | Declaring income from sales |
| Corporate Staff | Check whether income other than salary exceeds 200,000 yen |
| Investors | Handling changes depending on account category and products |
| People who want to use deductions | Medical expenses deduction,住宅 deduction, m、gage deduction first year, etc. |
"200,000 yen" of the sub-operation is income rather than sales. For example, an income of 300,000 yen, and an income of 20,000 yen. However, even if you do not need to return the income tax, you may need to return the resident tax.
In the investment, transactions that are completed with a specific account (withholding) may be unnecessary. On the other hand, it is necessary to confirm the losses and losses of cryptocurrencies, FX, and multiple accounts.
Required documents
First, we will collect documents based on numbers.
| 書類 | Main Applications |
|---|---|
| Hot spring | Check salary and year-end adjustment |
| Payment & Sales | ation of sub-business and business income |
| Exp Receipt | Exp of business income and miscellaneous income |
| Deduction Certificate | Insurance, iDeCo, seismic insurance, etc. |
| Medical expenses | Medical expenses deduction |
| Annual Report | ation of securities transactions |
If you have a My Number Card, you can easily import some data with e-Tax and Mina Portal.
Step 5
STEP1 Ag ate income
Depending on the type of salary, sub-business, business, investment, etc. It is important to see not only sales but also incomes with reduced expenses.
STEP2 deductions
We will confirm deductions that can be used, such as social insurance, life insurance, iDeCo, medical expenses, and生命s.
STEP3 Cal tax amount
The tax rate is applied to the taxable income deducted from the income. The basic image is as follows:
Income tax = taxable income × tax rate - deductionSTEP4 Submit a declaration
You can submit your documents to the e-Tax, mail, and tax office. Even if you are a beginner, you can enter it according to the guidance of the screen by using the preparation section of the tax declaration etc.
STEP5 Check tax or refund
If you pay too much with a collection of source and planned tax, you will be refunded, if you are missing. Don’t forget to check the payment deadline or transfer tax procedures.
Common mistakes
A common failure is to confuse sales and income, eliminate deduction certificates, leak medical expenses and金s, and start to expire.
In particular, sub-businesses and investments are time-consuming when you collect trading history and financial materials later. Decide the burden of the final declaration by little by little every month.
- 手続き declaration is a procedure to calculate income and tax for one year
- It may be necessary for sub-operation, investment, and deduction use even in corporate staff
- First organize your income, expenses, deductions and certificates
- Easy to proceed with e-Tax and creation corners
- Check the latest official information for taxation and deadlines
First, you need to make a declaration, and even if you want to know the necessary documents, the work will be quite easy.
出典
This article is reconstructed for beginners based on the information of the National Tax Agency on the final declaration.
- Date: 2026-05-09