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Income Tax Act

所得税法(しょとくぜいほう)

Section 2 Calculating Income in Each Class (Articles 35 to 41-2)

The law as Act Partially Amending the Income Tax Act, etc. (Act No. 12 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.

Article 35第三十五条

Miscellaneous Income(雑所得)
Article 35, paragraph (1)

Miscellaneous income means income not falling under the category of interest income, dividend income, real property income, business income, salary income, retirement income, timber income, capital gains, or occasional income.

雑所得とは、利子所得、配当所得、不動産所得、事業所得、給与所得、退職所得、山林所得、譲渡所得及び一時所得のいずれにも該当しない所得をいう。

Article 35, paragraph (2)

Miscellaneous income is the sum total of the amounts set forth in the following items:

雑所得の金額は、次の各号に掲げる金額の合計額とする。

Article 35, paragraph (2), item (i)

the amount remaining after the public pension deduction is applied against the revenue from public pensions and retirement packages in the year;

その年中の公的年金等の収入金額から公的年金等控除額を控除した残額

Article 35, paragraph (2), item (ii)

the amount arrived at when the necessary expenses are deducted from gross revenues constituting miscellaneous income in the relevant year (other than income from public pensions and retirement packages).

その年中の雑所得(公的年金等に係るものを除く。)に係る総収入金額から必要経費を控除した金額

Article 35, paragraph (3)

The public pensions and retirement packages that the preceding paragraph provides for means:

前項に規定する公的年金等とは、次に掲げる年金をいう。

Article 35, paragraph (3), item (i)

pensions based on the provisions of the Acts prescribed in Article 31, item (i) and item (ii) (Lump-Sum Payments Deemed to Constitute Severance Pay and Other Such Compensation) and pensions as prescribed by Cabinet Order which are based on the systems prescribed in item (i) and item (ii) of that Article (including any similar payments; the same applies in item (iii));

第三十一条第一号及び第二号(退職手当等とみなす一時金)に規定する法律の規定に基づく年金その他同条第一号及び第二号に規定する制度に基づく年金(これに類する給付を含む。第三号において同じ。)で政令で定めるもの

Article 35, paragraph (3), item (ii)

public retirement packages (other than lump-sum early retirement packages) and pensions based on past service which are paid by a former employer;

恩給(一時恩給を除く。)及び過去の勤務に基づき使用者であつた者から支給される年金

Article 35, paragraph (3), item (iii)

pensions received based on the provisions of the Fixed-Benefit Corporate Pension Act (if any part of installment deposits contributed based on bylaws provided for in Article 31, item (iii) constitutes an amount borne by the member prescribed in Article 25, paragraph (1) (Members) of that Act (including a person who was formerly a member as prescribed in that paragraph) to whom the pension is paid, this is limited to the part of the pension received based on the provisions of the Fixed-Benefit Corporate Pension Act which constitutes the amount of that pension less the part of the amount borne by the member which is calculated pursuant to Cabinet Order as being part of the amount of pension so received) and other pensions that Cabinet Order prescribes as being similar thereto.

確定給付企業年金法の規定に基づいて支給を受ける年金(第三十一条第三号に規定する規約に基づいて拠出された掛金のうちにその年金が支給される同法第二十五条第一項(加入者)に規定する加入者(同項に規定する加入者であつた者を含む。)の負担した金額がある場合には、その年金の額からその負担した金額のうちその年金の額に対応するものとして政令で定めるところにより計算した金額を控除した金額に相当する部分に限る。)その他これに類する年金として政令で定めるもの

Article 35, paragraph (4)

The public pension deduction prescribed in paragraph (2) is the amount that each of the following items prescribes for the category of case set forth in the item:

第二項に規定する公的年金等控除額は、次の各号に掲げる場合の区分に応じ当該各号に定める金額とする。

Article 35, paragraph (4), item (i)

if the taxpayer's total income as prescribed in Article 2, paragraph (1), item (xxx) (Definitions), calculated as if there were no revenue from public pensions and retirement packages in the year (referred to as the "total income other than miscellaneous income from public pensions and retirement packages" in the following item and item (iii)), is 10,000,000 yen or less: the sum total of the following amounts (or 600,000 yen, if that sum total is less than 600,000 yen):

その年中の公的年金等の収入金額がないものとして計算した場合における第二条第一項第三十号(定義)に規定する合計所得金額(次号及び第三号において「公的年金等に係る雑所得以外の合計所得金額」という。)が千万円以下である場合 次に掲げる金額の合計額(当該合計額が六十万円に満たない場合には、六十万円)

Article 35, paragraph (4), item (i), (a)

400,000 yen;

四十万円

Article 35, paragraph (4), item (i), (b)

the amount that each of the following prescribes for the category of case set forth therein, as it applies to the amount remaining after 500,000 yen is deducted against the taxpayer's revenue from public pensions and retirement packages in the year:

その年中の公的年金等の収入金額から五十万円を控除した残額の次に掲げる場合の区分に応じそれぞれ次に定める金額

Article 35, paragraph (4), item (i), (b), (1)

if the remaining amount is 3,600,000 yen or less:25% of the remaining amount;

当該残額が三百六十万円以下である場合 当該残額の百分の二十五に相当する金額

Article 35, paragraph (4), item (i), (b), (2)

if the remaining amount is over 3,600,000 yen but not more than 7,200,000 yen: the sum total of 900,000 yen and 15% of the difference arrived at when 3,600,000 yen is deducted from the remaining amount;

当該残額が三百六十万円を超え七百二十万円以下である場合 九十万円と当該残額から三百六十万円を控除した金額の百分の十五に相当する金額との合計額

Article 35, paragraph (4), item (i), (b), (3)

if the remaining amount is over 7,200,000 yen but not more than 9,500,000 yen: the sum total of 1,440,000 yen and 5% of the difference arrived at when 7,200,000 yen is deducted from the remaining amount;

当該残額が七百二十万円を超え九百五十万円以下である場合 百四十四万円と当該残額から七百二十万円を控除した金額の百分の五に相当する金額との合計額

Article 35, paragraph (4), item (i), (b), (4)

if the remaining amount is over 9,500,000 yen: 1,555,000 yen.

当該残額が九百五十万円を超える場合 百五十五万五千円

Article 35, paragraph (4), item (ii)

if the taxpayer's total income other than miscellaneous income from public pensions and retirement packages for the year is over 10,000,000 yen but not more than 20,000,000 yen: the sum total of the following amounts (or 500,000 yen, if that sum total is less than 500,000 yen):

その年中の公的年金等に係る雑所得以外の合計所得金額が千万円を超え二千万円以下である場合 次に掲げる金額の合計額(当該合計額が五十万円に満たない場合には、五十万円)

Article 35, paragraph (4), item (ii), (a)

300,000 yen;

三十万円

Article 35, paragraph (4), item (ii), (b)

the amount set forth in (b) of the preceding item.

前号ロに掲げる金額

Article 35, paragraph (4), item (iii)

if the taxpayer's total income other than miscellaneous income from public pensions and retirement packages for the year is over 20,000,000 yen: the sum total of the following amounts (or 400,000 yen, if that sum total is less than 400,000 yen):

その年中の公的年金等に係る雑所得以外の合計所得金額が二千万円を超える場合 次に掲げる金額の合計額(当該合計額が四十万円に満たない場合には、四十万円)

Article 35, paragraph (4), item (iii), (a)

200,000 yen;

二十万円

Article 35, paragraph (4), item (iii), (b)

the amount set forth in item (i), (b).

第一号ロに掲げる金額

Subsection 2 General Rules for Calculating the Amount of Income第二款 所得金額の計算の通則

Article 36第三十六条

Amount of Revenue(収入金額)
Article 36, paragraph (1)

Except as provided otherwise, an amount is to be treated as part of the revenue that is used to calculate the Income in Each Class for the year or is to be included in the gross revenue that is used to calculate the same, if it is to be ascribed to revenues during the year (and the value of anything other than monies, rights, or any other economic benefit is to be treated as such or included therein, if it is ascribed to revenues during the year).

その年分の各種所得の金額の計算上収入金額とすべき金額又は総収入金額に算入すべき金額は、別段の定めがあるものを除き、その年において収入すべき金額(金銭以外の物又は権利その他経済的な利益をもつて収入する場合には、その金銭以外の物又は権利その他経済的な利益の価額)とする。

Article 36, paragraph (2)

The value of a thing other than monies, rights, or any other economic benefit as referred to in the preceding paragraph is its value at the time the thing or rights are acquired or at the time the benefit is enjoyed.

前項の金銭以外の物又は権利その他経済的な利益の価額は、当該物若しくは権利を取得し、又は当該利益を享受する時における価額とする。

Article 36, paragraph (3)

Notwithstanding the provisions of paragraph (1), an amount is to be treated as a part of the amount of revenue that is used to calculate the interest income or dividend income for the year from interest on a bearer public and corporate bond; dividend of surplus (meaning a dividend of surplus as prescribed in Article 24, paragraph (1) (Dividend Income)) from a bearer share (including a bearer beneficiary certificate of a Bond-Based Investment Trust other than a Bond-Based Investment Trust Under Public Offering, and a beneficiary certificate linked to a bearer company bond-type beneficial interest; referred to as a "bearer share or similar interest" in Article 169, item (ii) (Income Tax Base for Separate Taxation), Article 224, paragraph (1) and paragraph (2) (Notice by Recipients of Interest, Dividends, and Similar Income), and Article 225, paragraph (1) and paragraph (2) (Payment Reports and Notice of Payment)); or distribution of proceeds linked to a bearer beneficiary certificate from a Loan Trust, Investment Trust, or Specified Trust That Issues Beneficiary Certificates, if the taxpayer is paid that amount during the year.

無記名の公社債の利子、無記名の株式(無記名の公募公社債等運用投資信託以外の公社債等運用投資信託の受益証券及び無記名の社債的受益権に係る受益証券を含む。第百六十九条第二号(分離課税に係る所得税の課税標準)、第二百二十四条第一項及び第二項(利子、配当等の受領者の告知)並びに第二百二十五条第一項及び第二項(支払調書及び支払通知書)において「無記名株式等」という。)の剰余金の配当(第二十四条第一項(配当所得)に規定する剰余金の配当をいう。)又は無記名の貸付信託、投資信託若しくは特定受益証券発行信託の受益証券に係る収益の分配については、その年分の利子所得の金額又は配当所得の金額の計算上収入金額とすべき金額は、第一項の規定にかかわらず、その年において支払を受けた金額とする。

Article 37第三十七条

Necessary Expenses(必要経費)
Article 37, paragraph (1)

Except as provided otherwise, the amounts that are to be included in the necessary expenses that are used to calculate the real property income, business income, or miscellaneous income for the year (other than any business income or miscellaneous income arising from the felling of trees in forested land or the transfer of forested land, and other than miscellaneous income arising from a public pension or retirement package as prescribed in Article 35, paragraph (3) (Definition of Public Pensions and Retirement Packages)) are the costs of goods sold to generate the gross revenue in that income type or other expenses directly necessary to the taxpayer's acquisition of gross revenue in that income type, as well as sales expenses, general administrative expenses, and other expenses for business operations in the year that are meant to generate that type of income (excluding any expense, other than a depreciation allowance, for which the taxpayer's liability does not become fixed during that year).

その年分の不動産所得の金額、事業所得の金額又は雑所得の金額(事業所得の金額及び雑所得の金額のうち山林の伐採又は譲渡に係るもの並びに雑所得の金額のうち第三十五条第三項(公的年金等の定義)に規定する公的年金等に係るものを除く。)の計算上必要経費に算入すべき金額は、別段の定めがあるものを除き、これらの所得の総収入金額に係る売上原価その他当該総収入金額を得るため直接に要した費用の額及びその年における販売費、一般管理費その他これらの所得を生ずべき業務について生じた費用(償却費以外の費用でその年において債務の確定しないものを除く。)の額とする。

Article 37, paragraph (2)

Except as provided otherwise, the amounts that are to be included in the necessary expenses that are used to calculate business income, timber income, or miscellaneous income are planting expenses, acquisition costs, maintenance expenses, felling expenses, and any other expenses needed to cultivate or transfer forested land (excluding any expense, other than a depreciation allowance, for which the taxpayer's liability does not become fixed during that year).

山林につきその年分の事業所得の金額、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すべき金額は、別段の定めがあるものを除き、その山林の植林費、取得に要した費用、管理費、伐採費その他その山林の育成又は譲渡に要した費用(償却費以外の費用でその年において債務の確定しないものを除く。)の額とする。

Article 38第三十八条

Acquisition Costs Deducted to Calculate Capital Gains(譲渡所得の金額の計算上控除する取得費)
Article 38, paragraph (1)

Except as provided otherwise, the asset acquisition costs that are deducted to calculate capital gains are the sum total of the amount needed to acquire the assets plus the amounts of equipment expenses and improvement expenses.

譲渡所得の金額の計算上控除する資産の取得費は、別段の定めがあるものを除き、その資産の取得に要した金額並びに設備費及び改良費の額の合計額とする。

Article 38, paragraph (2)

If an asset generating capital gains is a house or other asset that depreciates due to use or with the passage of time, the asset acquisition costs provided for in the preceding paragraph are the amount arrived at when the sum total of the amounts set forth in each of the following items for the category of period between the acquisition date and the transfer date which is set forth in the item is deducted from an amount equal to the sum total provided for in the preceding paragraph:

譲渡所得の基因となる資産が家屋その他使用又は期間の経過により減価する資産である場合には、前項に規定する資産の取得費は、同項に規定する合計額に相当する金額から、その取得の日から譲渡の日までの期間のうち次の各号に掲げる期間の区分に応じ当該各号に掲げる金額の合計額を控除した金額とする。

Article 38, paragraph (2), item (i)

any period during which the assets are used in business operations that are meant to generate real property income, business income, timber income, or miscellaneous income:the cumulative amount of the depreciation allowances for those assets which, pursuant to the provisions of Article 49, paragraph (1) (Calculating Depreciation Allowances for Depreciable Assets; Depreciation Methods), are included in necessary expenses that are used to calculate the real property income, business income, timber income, or miscellaneous income for each of the years that contain days within that period;

その資産が不動産所得、事業所得、山林所得又は雑所得を生ずべき業務の用に供されていた期間 第四十九条第一項(減価償却資産の償却費の計算及びその償却の方法)の規定により当該期間内の日の属する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るその資産の償却費の額の累積額

Article 38, paragraph (2), item (ii)

any period other than as set forth in the preceding item:the amount of depreciation in those assets during that period, as calculated pursuant to Cabinet Order and in accordance with the provisions of Article 49, paragraph (1).

前号に掲げる期間以外の期間 第四十九条第一項の規定に準じて政令で定めるところにより計算したその資産の当該期間に係る減価の額

Subsection 3 Calculating Amounts of Revenue第三款 収入金額の計算

Article 39第三十九条

Inclusion of Inventory Used to Benefit One's Own Household in Gross Revenue(たな卸資産等の自家消費の場合の総収入金額算入)
Article 39, paragraph (1)

If a Resident uses Inventory (including anything that Cabinet Order prescribes to be an equivalent asset) to benefit the household, or fells trees in forested land and uses them to benefit the household, an amount equal to the value of those assets at the time of use is included in the gross revenue that is used to calculate the Resident's business income, timber income, or miscellaneous income for the year in which the date of use falls.

居住者がたな卸資産(これに準ずる資産として政令で定めるものを含む。)を家事のために消費した場合又は山林を伐採して家事のために消費した場合には、その消費した時におけるこれらの資産の価額に相当する金額は、その者のその消費した日の属する年分の事業所得の金額、山林所得の金額又は雑所得の金額の計算上、総収入金額に算入する。

Article 40第四十条

Inclusion of Gifts of Inventory in Gross Revenue(たな卸資産の贈与等の場合の総収入金額算入)
Article 40, paragraph (1)

If Inventory owned by a Resident (including forested land generating business income or anything that Cabinet Order prescribes as an asset equivalent to Inventory; hereinafter the same applies in this Article) has devolved due to circumstances as set forth in one of the following items, an amount equal to what is set forth in the applicable item is included in the gross revenue that is used to calculate the Resident's business income or miscellaneous income for the year in which the day that the circumstances occur falls:

次の各号に掲げる事由により居住者の有するたな卸資産(事業所得の基因となる山林その他たな卸資産に準ずる資産として政令で定めるものを含む。以下この条において同じ。)の移転があつた場合には、当該各号に掲げる金額に相当する金額は、その者のその事由が生じた日の属する年分の事業所得の金額又は雑所得の金額の計算上、総収入金額に算入する。

Article 40, paragraph (1), item (i)

an inter vivos gift (other than a gift to an heir that becomes effective on the death of a donor leaving an estate) or legacy (other than a universal legacy and other than a particular legacy left to an heir):the value of the Inventory at the time of the inter vivos gift or legacy;

贈与(相続人に対する贈与で被相続人である贈与者の死亡により効力を生ずるものを除く。)又は遺贈(包括遺贈及び相続人に対する特定遺贈を除く。) 当該贈与又は遺贈の時におけるそのたな卸資産の価額

Article 40, paragraph (1), item (ii)

a transfer for consideration at a conspicuously low value:the part of the difference between the amount of consideration and the value of the Inventory at the time of the transfer which is found, in essence, to have been given as a gift.

著しく低い価額の対価による譲渡 当該対価の額と当該譲渡の時におけるそのたな卸資産の価額との差額のうち実質的に贈与をしたと認められる金額

Article 40, paragraph (2)

Calculation of business income, timber income, capital gains, or miscellaneous income if a Resident transfers Inventory acquired through an inter vivos gift, legacy, or transfer as set forth in the items of the preceding paragraph is as follows:

居住者が前項各号に掲げる贈与若しくは遺贈又は譲渡により取得したたな卸資産を譲渡した場合における事業所得の金額、山林所得の金額、譲渡所得の金額又は雑所得の金額の計算については、次に定めるところによる。

Article 40, paragraph (2), item (i)

Inventory acquired through an inter vivos gift or legacy as set forth in item (i) of the preceding paragraph is deemed to have been acquired for the amount set forth in that item;

前項第一号に掲げる贈与又は遺贈により取得したたな卸資産については、同号に掲げる金額をもつて取得したものとみなす。

Article 40, paragraph (2), item (ii)

Inventory acquired through a transfer as set forth in item (ii) of the preceding paragraph is deemed to have been acquired for the sum total of the consideration for the transfer and the amount set forth in that item.

前項第二号に掲げる譲渡により取得したたな卸資産については、当該譲渡の対価の額と同号に掲げる金額との合計額をもつて取得したものとみなす。

Article 41第四十一条

Inclusion of Crop Harvests in Gross Revenue(農産物の収穫の場合の総収入金額算入)
Article 41, paragraph (1)

If a Resident engaged in agriculture harvests crops (but only rice, barley, wheat, or a crop prescribed by Cabinet Order), an amount equal to the value of the crops at the time of the harvest (hereinafter referred to as the "value of the harvest" in this Article) is included in the gross revenue that is used to calculate the Resident's business income for the year in which the date of the harvest falls.

農業を営む居住者が農産物(米、麦その他政令で定めるものに限る。)を収穫した場合には、その収穫した時における当該農産物の価額(以下この条において「収穫価額」という。)に相当する金額は、その者のその収穫の日の属する年分の事業所得の金額の計算上、総収入金額に算入する。

Article 41, paragraph (2)

The Resident is deemed to acquire a crop as referred to in the preceding paragraph for the value of the harvest at the time prescribed in that paragraph.

前項の農産物は、同項に規定する時にその収穫価額をもつて取得したものとみなす。

Article 41-2第四十一条の二

Amount of Revenue from Transfer of a Right to Acquire Shares Granted by the Issuing Corporation(発行法人から与えられた株式を取得する権利の譲渡による収入金額)
Article 41-2, paragraph (1)

If a Resident has been granted by the issuing corporation a right that Cabinet Order specifies as a right to acquire shares without compensation or at an advantageous price, and the Resident, the Resident's heir, or any other person specified by Cabinet Order transfers the right to the issuing corporation, the provisions of this Act (other than Article 224-3 (Notice by Recipients of Consideration for Transferring Shares), Article 225 (Payment Reports and Notice of Payment), Article 228 (Report on Consideration for Transfer of Shares Received by the Person of Record), and the penal provisions relating to these provisions) apply by deeming the amount arrived at when the acquisition cost of the right is deducted from the amount of the consideration for the transfer to be the amount of revenue relating to business income, the amount of revenue from salary or other wages prescribed in Article 28, paragraph (1) (Salary Income), the amount of revenue from severance pay and other such compensation prescribed in Article 30, paragraph (1) (Retirement Income), the amount of revenue relating to occasional income, or the amount of revenue relating to miscellaneous income (other than that relating to public pensions and retirement packages prescribed in Article 35, paragraph (3) (Miscellaneous Income)), paid by the issuing corporation.

居住者が株式を無償又は有利な価額により取得することができる権利として政令で定める権利を発行法人から与えられた場合において、当該居住者又は当該居住者の相続人その他の政令で定める者が当該権利をその発行法人に譲渡したときは、当該譲渡の対価の額から当該権利の取得価額を控除した金額を、その発行法人が支払をする事業所得に係る収入金額、第二十八条第一項(給与所得)に規定する給与等の収入金額、第三十条第一項(退職所得)に規定する退職手当等の収入金額、一時所得に係る収入金額又は雑所得(第三十五条第三項(雑所得)に規定する公的年金等に係るものを除く。)に係る収入金額とみなして、この法律(第二百二十四条の三(株式等の譲渡の対価の受領者等の告知)、第二百二十五条(支払調書及び支払通知書)及び第二百二十八条(名義人受領の株式等の譲渡の対価の調書)並びにこれらの規定に係る罰則を除く。)の規定を適用する。

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