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In principle, the determining tax returns from January 1 to December 31, 2026.
Declaration period is expected from February 16, 2027 to March 15, 2027.
About 2027
2027 is a procedure to calculate income tax etc. for 2026.
The determining of income tax is to calculate income, deduction, and tax amount for one year, and adjust the difference between source collection and planned tax. In the case of declaring in 2027, as a rule, it is the income that occurred from January 1 to December 31, 2026.
This article is a general tax system and is not an individual tax decision. Please check the latest information of the National Tax Agency before submitting.
Expectation period
In principle, the National Tax Agency will inform you that the period of tax return is from February 16th to March 15th.
| 内容 | Period |
|---|---|
| Target income | January 1 - December 31, 2026 |
| Period | February 16 - March 15, 2027 |
| Return | may be submitted before the normal declaration period |
Tuesday, February 16, 2027, Monday, March 15 Therefore, it is expected to proceed in this period if it is normal rule. However, please check the annual guidance for details of the reception, consultation venue, and payment method of the tax office.
People who are easy to need
The following people are likely to need a final declaration:
| Case | ation Point |
|---|---|
| Freeス | 売上 sales, expenses, and income |
| Corporate Staff | Check whether income other than salary exceeds 200,000 yen |
| Investors | Check specific accounts, FX, crypto assets, and profits |
| People who use deductions | Medical expenses deduction,住宅 deduction, m、gage deduction first year, etc. |
The 200,000 yen of the sub-operation is income rather than sales. I think of the amount that deducts the necessary expenses from the sales.
In addition, stock trading of specific account (withholding) may be unnecessary, but if you use profit and loss transfer, the declaration is related.
5 steps
STEP1 Collect documents
We collect source collection slips, sales materials,経費 receipts, deduction certificates, medical expenses statements, annual report of securities companies, etc.
STEP2所得 income
It is divided into salary, business, sub-business, miscellaneous income, transfer income, etc. It is safe to start thinking because it is easy to organize trading history.
STEP3 Check Deduction
We will check basic deductions, social insurance premium deductions, life insurance premium deductions, iDeCo, small-scale enterprise copayments, medical expenses deductions,医療 deductions, etc.
STEP4 Create declaration
You can use the preparation section of the National Tax Agency's final declaration, etc. to enter the information on the screen. If you have a My Number Card, you can also use e-Tax and Mina Portal linkage.
STEP5提出ation, tax payment and refund
After submission, we will pay by the deadline if tax is required. If you want to get a refund, please check whether there is an error in the return account or the input contents.
Notes
In 2027, it is important to organize income, expenses, and deduction materials during 2026 by the end of the year.
The individual business owner can also check the rules for storingボイスs, consumption tax and electronic bookkeeping. Even if the determining tax is not necessary for the determining of income tax, the delegation of the resident tax may be required.
Cryptocurrencies and FX are areas where profit and loss calculations can be complex. Download your trading history individually and check your profits and losses at the end of the year to make it harder to up.
- In principle, income for 2026 is eligible
- Declaration period is normallyルール from February 16, 2027 to March 15, 2027
- It may be necessary for secondary business, investment and deduction use
- Collect documents, organize income, and check deductions
- Final Dates and Procedures
By the end of the year, if you divide "income," "exp," and "deduction materials", the declaration work in 2027 will be quite easy.
出典
This article is reconstructed for preparation of declarations in 2027 based on the general rules of the National Tax Agency for the final declaration.
- Date: 2026-05-09