https://www.nta.go.jp/taxes/shiraberu/s ... df/050.pdf
Pages 28-30
Form B - Page 1 - Item 14
Form B - Page 2 - Item 14
You should have received a postcard from you iDECO Provider with the numbers on it for 2021.
Sum any ① premiums paid under the mutual aid contract based on the provisions of the Small Enterprise Mutual Relief Projects Act (excluding
former second class mutual aid contract),or with ② corporate pension premiums and personal pension premiums based on the Defined Contribution Pension Act (such as premiums for iDeCo) or ③ Mentally Retarded Persons Mutual Aid Programs operated by local government.
I assume it's only
② corporate pension premiums and personal pension premiums based on the Defined Contribution Pension Act (such as premiums for iDeCo)
Form B - Page 1 - Item 14 小規模企業共済等掛金控除
Enter Total Premiums Paid here
Form B - Page 2 - Item 14 小規模企業共済等掛金控除
Enter the type of premium in the field of “Type of insurance premiums, etc.” 保 険 料 等 の 種 類 column, and the amount of premiums by type you have paid in the field of “Total of insurance premiums, etc. paid” 支払保険料等の計 column in the block “⑭ deduction for small business
mutual aid premiums,” 小規模企業共済等掛金控除, and if there is any amount to which this deduction has not been applied at the year-end
adjustment among the amounts you have entered in the field of “Total of insurance premiums, etc. paid,” write
that amount in the field of “Other than year-end adjustment” うち年末調整等以外 column.
If an employment income earner enters the amount to which this deduction has been already applied at the year end
adjustment, write “for withholding” in the field of “Type of insurance premiums, etc.”
If you took this deduction without adjustment, the amount will be written in brackets in the block of “Amount of social security premiums, etc.” of the withholding tax statement.
Form B - Page 1 - Item 25 ⑬から㉔までの計
Sum the numbers from Items 13 to 24, and enter the total number in Item 25.