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Order for Enforcement of the Income Tax Act

所得税法施行令(しょとくぜいほうしこうれい)

Section 4 Calculation of Necessary Expenses, etc. (Articles 127 to 129)

The law as Cabinet Order Partially Amending the Order for Enforcement of the Income Tax Act (Cabinet Order No. 93 of 2026) leaves it, with the words it changes marked.

The main text is read a page at a time: a chapter to a page, and a long chapter in runs of articles. The whole main text, and the supplementary provisions and appended tables this amendment changes. Those it leaves untouched are on the page for the text in force.

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Article 127第百二十七条

Special Provisions on Acquisition Price of Capital Expenditure(資本的支出の取得価額の特例)
Article 127, paragraph (1)

If, among the amounts expended with respect to Depreciable Assets held by a Resident (excluding those falling under the following Article; the same applies hereinafter in this Article), there is an amount that was not included in necessary expenses, pursuant to Article 181 (Capital Expenditure), in calculating the amount of real property income, the amount of business income, the amount of timber income, or the amount of miscellaneous income for the year in which the date of expenditure falls, a Depreciable Asset of the same type and useful life as the Depreciable Asset held is deemed to have been newly acquired, with that amount as the acquisition price under paragraph (1) of the preceding Article.

居住者が有する減価償却資産(次条の規定に該当するものを除く。以下この条において同じ。)について支出する金額のうちに第百八十一条(資本的支出)の規定によりその支出する日の属する年分の不動産所得の金額、事業所得の金額、山林所得の金額又は雑所得の金額の計算上必要経費に算入されなかつた金額がある場合には、当該金額を前条第一項の規定による取得価額として、その有する減価償却資産と種類及び耐用年数を同じくする減価償却資産を新たに取得したものとする。

Article 127, paragraph (2)

In the case prescribed in the preceding paragraph, if the Resident prescribed in that paragraph has adopted the depreciation method prescribed in Article 120, paragraph (1) (Depreciation Methods for Depreciable Assets) as the depreciation method to be used for the Depreciable Assets held, the amount expended referred to in the preceding paragraph may, notwithstanding the preceding paragraph, be added to the acquisition price of that Depreciable Asset under the provisions of the preceding Article.

前項に規定する場合において、同項に規定する居住者が有する減価償却資産についてそのよるべき償却の方法として第百二十条第一項(減価償却資産の償却の方法)に規定する償却の方法を採用しているときは、前項の規定にかかわらず、同項の支出した金額を当該減価償却資産の前条の規定による取得価額に加算することができる。

Article 127, paragraph (3)

In the case prescribed in paragraph (1), if the Depreciable Asset held by the Resident prescribed in that paragraph is a leased asset (meaning a leased asset prescribed in Article 120-2, paragraph (2), item (iv) (Depreciation Methods for Depreciable Assets); the same applies hereinafter in this paragraph), the Depreciable Asset deemed to have been newly acquired under the provisions of paragraph (1) is deemed to fall under a leased asset. In this case, Article 120-2 is applied by treating the lease term prescribed in paragraph (2), item (vii) of that Article for the Depreciable Asset deemed to have been acquired as the period from the day on which the amount expended referred to in paragraph (1) was expended to the last day of the lease term prescribed in that item for the Depreciable Asset held by that Resident.

第一項に規定する場合において、同項に規定する居住者が有する減価償却資産がリース資産(第百二十条の二第二項第四号(減価償却資産の償却の方法)に規定するリース資産をいう。以下この項において同じ。)であるときは、第一項の規定により新たに取得したものとされる減価償却資産は、リース資産に該当するものとする。この場合においては、当該取得したものとされる減価償却資産の同条第二項第七号に規定するリース期間は、第一項の支出した金額を支出した日から当該居住者が有する減価償却資産に係る同号に規定するリース期間の終了の日までの期間として、同条の規定を適用する。

Article 127, paragraph (4)

In the case prescribed in paragraph (1), if the amount expended prescribed in that paragraph is expended in connection with a renewal under Article 57, paragraph (3) (Duration of Fishing Port Water Surface Facility Operation Rights) of the Act on Development, etc. of Fishing Ports and Grounds (Act No. 137 of 1950), the phrase "type and useful life" in paragraph (1) is deemed to be replaced with "type".

第一項に規定する場合において、同項に規定する支出する金額が漁港及び漁場の整備等に関する法律(昭和二十五年法律第百三十七号)第五十七条第三項(漁港水面施設運営権の存続期間)の規定による更新に伴い支出するものであるときは、第一項中「種類及び耐用年数」とあるのは、「種類」とする。

Article 127, paragraph (5)

In the case where there is an amount that was not included in necessary expenses as prescribed in paragraph (1) with respect to the income tax of a Resident for the year preceding that year, if the Resident has adopted the declining-balance method as the depreciation method to be used for the Depreciable Assets held by the Resident prescribed in that paragraph (excluding assets acquired on or before March 31, 2012; hereinafter in this paragraph referred to as "former Depreciable Assets") and the Depreciable Assets deemed to have been newly acquired under the provisions of paragraph (1) (hereinafter in this Article referred to as "additional Depreciable Assets"), then notwithstanding that paragraph, it may be deemed that one Depreciable Asset has been newly acquired, on January 1 of that year, whose acquisition price under paragraph (1) of the preceding Article is the sum of the acquisition price of the former Depreciable Assets on that day under the preceding Article (if there is an amount already included as depreciation allowance in necessary expenses in calculating the amount of real property income, the amount of business income, the amount of timber income, or the amount of miscellaneous income for each year up to the year preceding that year, the amount obtained by deducting that amount; hereinafter in this Article referred to as "acquisition price, etc.") and the acquisition price, etc. of the additional Depreciable Assets.

居住者のその年の前年分の所得税につき第一項に規定する必要経費に算入されなかつた金額がある場合において、同項に規定する居住者が有する減価償却資産(平成二十四年三月三十一日以前に取得された資産を除く。以下この項において「旧減価償却資産」という。)及び第一項の規定により新たに取得したものとされた減価償却資産(以下この条において「追加償却資産」という。)についてそのよるべき償却の方法として定率法を採用しているときは、同項の規定にかかわらず、その年の一月一日において、同日における旧減価償却資産の前条の規定による取得価額(既に償却費としてその年の前年分以前の各年分の不動産所得の金額、事業所得の金額、山林所得の金額又は雑所得の金額の計算上必要経費に算入された金額がある場合には、当該金額を控除した金額。以下この条において「取得価額等」という。)と追加償却資産の取得価額等との合計額を前条第一項の規定による取得価額とする一の減価償却資産を、新たに取得したものとすることができる。

Article 127, paragraph (6)

In the case where there is an amount that was not included in necessary expenses as prescribed in paragraph (1) with respect to the income tax of a Resident for the year preceding that year, if the Resident has adopted the declining-balance method as the depreciation method to be used for the additional Depreciable Assets pertaining to that amount and does not receive the application of the preceding paragraph, then notwithstanding paragraph (1) and the preceding paragraph, it may be deemed that one Depreciable Asset has been newly acquired, on January 1 of that year, whose acquisition price under paragraph (1) of the preceding Article is the sum of the acquisition price, etc. on that day of those additional Depreciable Assets not subject to that application that are of the same type and useful life.

居住者のその年の前年分の所得税につき第一項に規定する必要経費に算入されなかつた金額がある場合において、当該金額に係る追加償却資産について、そのよるべき償却の方法として定率法を採用し、かつ、前項の規定の適用を受けないときは、第一項及び前項の規定にかかわらず、その年の一月一日において、当該適用を受けない追加償却資産のうち種類及び耐用年数を同じくするものの同日における取得価額等の合計額を前条第一項の規定による取得価額とする一の減価償却資産を、新たに取得したものとすることができる。

Article 128第百二十八条

Acquisition Price of Non-Business Assets Acquired on or before December 31, 1952 That Have Been Put to Business Use(昭和二十七年十二月三十一日以前に取得した非事業用資産で業務の用に供されたものの取得価額)
Article 128, paragraph (1)

Where a house or other asset that depreciates through use or the passage of time, that has been continuously owned since on or before December 31, 1952, and that has not been used for business that is to generate real property income, business income, timber income or miscellaneous income, is put to use for that business, the acquisition price of that asset prescribed in Article 126, paragraph (1) (Acquisition Price of Depreciable Assets) is the sum of the amount calculated as provided by Cabinet Order prescribed in Article 61, paragraph (3) (Acquisition Costs of Assets Acquired Prior to December 31, 1952) of the Act with respect to that asset and the amount of equipment expenses and improvement expenses paid for that asset during the period from January 1, 1953 to the day on which it was put to use for that business.

昭和二十七年十二月三十一日以前から引き続き所有していた家屋その他使用又は期間の経過により減価する資産で不動産所得、事業所得、山林所得又は雑所得を生ずべき業務の用に供していないものを当該業務の用に供した場合には、当該資産の第百二十六条第一項(減価償却資産の取得価額)に規定する取得価額は、当該資産に係る法第六十一条第三項(昭和二十七年十二月三十一日以前に取得した資産の取得費等)に規定する政令で定めるところにより計算した金額と当該資産につき昭和二十八年一月一日から当該業務の用に供された日までの間に支出された設備費及び改良費の額との合計額とする。

Article 128, paragraph (2)

The provisions of paragraphs (1), (2), (5) and (6) of the preceding Article apply mutatis mutandis to the case where, among the amounts paid for an asset prescribed in the preceding paragraph after it has been put to use for the business set forth in that paragraph, there is an amount that has not been included in the necessary expenses prescribed in paragraph (1) of that Article.

前条第一項、第二項、第五項及び第六項の規定は、前項に規定する資産を同項の業務の用に供した後において当該資産につき支出する金額のうちに同条第一項に規定する必要経費に算入されなかつた金額がある場合について準用する。

Article 129第百二十九条

Useful Life, Depreciation Rates, etc. of Depreciable Assets(減価償却資産の耐用年数、償却率等)
Article 129, paragraph (1)

The useful life of a Depreciable Asset prescribed in Article 120, paragraph (1), items (i) and (iii) and Article 120-2, paragraph (1), items (i) and (iii) (Depreciation Methods for Depreciable Assets), the depreciation rate corresponding to the useful life prescribed in Article 120, paragraph (1), item (i) and Article 120-2, paragraph (1), item (i), the revised depreciation rate corresponding to the useful life prescribed in that item, the guarantee rate corresponding to the useful life prescribed in paragraph (2), item (i) of that Article, and the residual value prescribed in Article 120, paragraph (1), items (i) and (iii) are as provided by Ministry of Finance Order.

減価償却資産の第百二十条第一項第一号及び第三号並びに第百二十条の二第一項第一号及び第三号(減価償却資産の償却の方法)に規定する耐用年数、第百二十条第一項第一号及び第百二十条の二第一項第一号に規定する耐用年数に応じた償却率、同号に規定する耐用年数に応じた改定償却率、同条第二項第一号に規定する耐用年数に応じた保証率並びに第百二十条第一項第一号及び第三号に規定する残存価額については、財務省令で定めるところによる。

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