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Income Tax Act

所得税法(しょとくぜいほう)

Section 4 Deductions from Income (Articles 72 to 75)

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.

Section 4 Deductions from Income第四節 所得控除

Article 72第七十二条

Casualty Loss Deduction(雑損控除)
Article 72, paragraph (1)

If there is any loss on assets owned by a Resident or that Resident's spouse or any other relative whose living expenses are paid from the same resources as the Resident (other than assets prescribed in Article 62, paragraph (1) (Loss of Assets Not Necessary in Everyday Life, Due to Disaster) or Article 70, paragraph (3) (Amount of Disaster-Related Loss on Business Assets)) due to Disaster, robbery, or misappropriation (this includes if the Resident pays any unavoidable expense prescribed by Cabinet Order in connection with a Disaster, robbery, or misappropriation), and the total amount of such losses for the year (including any amount spent on the aforementioned unavoidable expenses but excluding any part of the loss covered by insurance benefits, compensation for damage, or anything similar to these; hereinafter referred to as the "amount of losses" in this paragraph) exceeds the amount that is set forth in any of the following items for the category of case set forth in the item, the part of the total amount of losses that exceeds the amount set forth in the relevant item is allowed as a deduction from the Resident's gross income, retirement income, or timber income for the year:

居住者又はその者と生計を一にする配偶者その他の親族で政令で定めるものの有する資産(第六十二条第一項(生活に通常必要でない資産の災害による損失)及び第七十条第三項(被災事業用資産の損失の金額)に規定する資産を除く。)について災害又は盗難若しくは横領による損失が生じた場合(その災害又は盗難若しくは横領に関連してその居住者が政令で定めるやむを得ない支出をした場合を含む。)において、その年における当該損失の金額(当該支出をした金額を含むものとし、保険金、損害賠償金その他これらに類するものにより補てんされる部分の金額を除く。以下この項において「損失の金額」という。)の合計額が次の各号に掲げる場合の区分に応じ当該各号に掲げる金額を超えるときは、その超える部分の金額を、その居住者のその年分の総所得金額、退職所得金額又は山林所得金額から控除する。

Article 72, paragraph (1), item (i)

if the amount of disaster-related expenses (meaning the part of the amount of losses that Cabinet Order prescribes as the amount spent in direct connection with Disasters; hereinafter the same applies in this paragraph) that forms a part of the amount of losses for the year is 50,000 yen or less (or if there were no disaster-related expenses for the year):10% of the sum total of the Resident's gross income, retirement income, and timber income for the year;

その年における損失の金額に含まれる災害関連支出の金額(損失の金額のうち災害に直接関連して支出をした金額として政令で定める金額をいう。以下この項において同じ。)が五万円以下である場合(その年における災害関連支出の金額がない場合を含む。) その居住者のその年分の総所得金額、退職所得金額及び山林所得金額の合計額の十分の一に相当する金額

Article 72, paragraph (1), item (ii)

if the amount of disaster-related expenses that forms a part of the amount of losses for the year exceeds 50,000 yen:either the amount arrived at when disaster-related expenses in excess of 50,000 yen are deducted from the total amount of losses for the year, or the amount set forth in the preceding item, whichever is lower;

その年における損失の金額に含まれる災害関連支出の金額が五万円を超える場合 その年における損失の金額の合計額から災害関連支出の金額のうち五万円を超える部分の金額を控除した金額と前号に掲げる金額とのいずれか低い金額

Article 72, paragraph (1), item (iii)

if all amounts of losses for the year constitute disaster-related expenses:either 50,000 yen or the amount set forth in item (i), whichever is lower.

その年における損失の金額がすべて災害関連支出の金額である場合 五万円と第一号に掲げる金額とのいずれか低い金額

Article 72, paragraph (2)

Cabinet Order provides for the necessary particulars concerning the calculation of the amount of losses prescribed in the preceding paragraph.

前項に規定する損失の金額の計算に関し必要な事項は、政令で定める。

Article 72, paragraph (3)

A deduction under paragraph (1) is referred to as a casualty loss deduction.

第一項の規定による控除は、雑損控除という。

Article 73第七十三条

Medical Expense Deduction(医療費控除)
Article 73, paragraph (1)

If a Resident pays, in any year, medical expenses for the Resident or for the Resident's spouse or any other relative whose living expenses are paid from the same resources as the Resident, and the total amount of those medical expenses paid during the year (excluding any part covered by insurance benefits, compensation for damage, or anything similar to these) exceeds the amount equivalent to 5% of the total of the Resident's gross income, retirement income, and timber income for the year (or 100,000 yen, if that amount exceeds 100,000 yen), the amount of the excess (or 2,000,000 yen, if that amount exceeds 2,000,000 yen) is allowed as a deduction from the Resident's gross income, retirement income, or timber income for the year.

居住者が、各年において、自己又は自己と生計を一にする配偶者その他の親族に係る医療費を支払つた場合において、その年中に支払つた当該医療費の金額(保険金、損害賠償金その他これらに類するものにより補てんされる部分の金額を除く。)の合計額がその居住者のその年分の総所得金額、退職所得金額及び山林所得金額の合計額の百分の五に相当する金額(当該金額が十万円を超える場合には、十万円)を超えるときは、その超える部分の金額(当該金額が二百万円を超える場合には、二百万円)を、その居住者のその年分の総所得金額、退職所得金額又は山林所得金額から控除する。

Article 73, paragraph (2)

The medical expenses prescribed in the preceding paragraph are the consideration for medical examination or treatment by a physician or dentist, for the purchase of pharmaceuticals necessary for treatment or medical care, and for the provision of other medical care or related personal services, which Cabinet Order prescribes as being recognized as ordinarily necessary.

前項に規定する医療費とは、医師又は歯科医師による診療又は治療、治療又は療養に必要な医薬品の購入その他医療又はこれに関連する人的役務の提供の対価のうち通常必要であると認められるものとして政令で定めるものをいう。

Article 73, paragraph (3)

A deduction under paragraph (1) is referred to as a medical expense deduction.

第一項の規定による控除は、医療費控除という。

Article 74第七十四条

Social Insurance Premium Deduction(社会保険料控除)
Article 74, paragraph (1)

If a Resident pays, in any year, social insurance premiums to be borne by the Resident or by the Resident's spouse or any other relative whose living expenses are paid from the same resources as the Resident, or if those premiums are deducted from the Resident's pay, the amount paid or the amount deducted is allowed as a deduction from the Resident's gross income, retirement income, or timber income for the year.

居住者が、各年において、自己又は自己と生計を一にする配偶者その他の親族の負担すべき社会保険料を支払つた場合又は給与から控除される場合には、その支払つた金額又はその控除される金額を、その居住者のその年分の総所得金額、退職所得金額又は山林所得金額から控除する。

Article 74, paragraph (2)

The social insurance premiums prescribed in the preceding paragraph are the following premiums and other equivalent premiums prescribed by Cabinet Order (excluding premiums that are part of a person's pay as set forth in Article 9, paragraph (1), item (vii) (Nontaxability of Service Allowances)):

前項に規定する社会保険料とは、次に掲げるものその他これらに準ずるもので政令で定めるもの(第九条第一項第七号(在勤手当の非課税)に掲げる給与に係るものを除く。)をいう。

Article 74, paragraph (2), item (i)

health insurance premiums that the taxpayer bears as an insured person pursuant to the Health Insurance Act (Act No. 70 of 1922);

健康保険法(大正十一年法律第七十号)の規定により被保険者として負担する健康保険の保険料

Article 74, paragraph (2), item (ii)

national health insurance premiums under the National Health Insurance Act (Act No. 192 of 1958) or national health insurance tax under the Local Tax Act;

国民健康保険法(昭和三十三年法律第百九十二号)の規定による国民健康保険の保険料又は地方税法の規定による国民健康保険税

Article 74, paragraph (2), item (ii-2)

premiums under the Act for Ensuring Medical Care for the Elderly (Act No. 80 of 1982);

高齢者の医療の確保に関する法律(昭和五十七年法律第八十号)の規定による保険料

Article 74, paragraph (2), item (iii)

long-term care insurance premiums under the Long-Term Care Insurance Act (Act No. 123 of 1997);

介護保険法(平成九年法律第百二十三号)の規定による介護保険の保険料

Article 74, paragraph (2), item (iv)

labor insurance premiums that the taxpayer bears as a person covered by employment insurance pursuant to the Act on Collection of Labor Insurance Premiums (Act No. 84 of 1969);

労働保険の保険料の徴収等に関する法律(昭和四十四年法律第八十四号)の規定により雇用保険の被保険者として負担する労働保険料

Article 74, paragraph (2), item (v)

national pension premiums that the taxpayer bears as an insured person pursuant to the National Pension Act, and installments that the taxpayer bears as a member of the National Pension Fund;

国民年金法の規定により被保険者として負担する国民年金の保険料及び国民年金基金の加入員として負担する掛金

Article 74, paragraph (2), item (vi)

farmers' pension premiums that the taxpayer bears as an insured person pursuant to the Act on the Farmers' Pension Fund, I.A.A.;

独立行政法人農業者年金基金法の規定により被保険者として負担する農業者年金の保険料

Article 74, paragraph (2), item (vii)

employees' pension insurance premiums that the taxpayer bears as an insured person pursuant to the Employees' Pension Insurance Act;

厚生年金保険法の規定により被保険者として負担する厚生年金保険の保険料

Article 74, paragraph (2), item (viii)

mariners' insurance premiums that the taxpayer bears as an insured person pursuant to the Mariners' Insurance Act;

船員保険法の規定により被保険者として負担する船員保険の保険料

Article 74, paragraph (2), item (ix)

installments under the National Public Servants Mutual Aid Association Act;

国家公務員共済組合法の規定による掛金

Article 74, paragraph (2), item (x)

installments under the Local Public Officers Mutual Aid Association Act (including special installments);

地方公務員等共済組合法の規定による掛金(特別掛金を含む。)

Article 74, paragraph (2), item (xi)

installments that the taxpayer bears as a member pursuant to the Private School Personnel Mutual Aid Association Act;

私立学校教職員共済法の規定により加入者として負担する掛金

Article 74, paragraph (2), item (xii)

payments pursuant to Article 59 (Payment of Public Retirement Packages) of the Public Officers Pension Act (including as applied mutatis mutandis pursuant to other Acts).

恩給法第五十九条(恩給納金)(他の法律において準用する場合を含む。)の規定による納金

Article 74, paragraph (3)

A deduction under paragraph (1) is referred to as a social insurance premium deduction.

第一項の規定による控除は、社会保険料控除という。

Article 75第七十五条

Deduction for Small Enterprise-based Mutual Aid Premiums and Similar Payments(小規模企業共済等掛金控除)
Article 75, paragraph (1)

If a Resident pays small enterprise-based mutual aid premiums and similar payments in any year, the amount paid is allowed as a deduction from the Resident's gross income, retirement income, or timber income for the year.

居住者が、各年において、小規模企業共済等掛金を支払つた場合には、その支払つた金額を、その者のその年分の総所得金額、退職所得金額又は山林所得金額から控除する。

Article 75, paragraph (2)

The small enterprise-based mutual aid premiums and similar payments prescribed in the preceding paragraph are the following installments:

前項に規定する小規模企業共済等掛金とは、次に掲げる掛金をいう。

Article 75, paragraph (2), item (i)

installments under a mutual relief contract prescribed in Article 2, paragraph (2) (Definitions) of the Small Enterprise Mutual Relief Projects Act (Act No. 102 of 1965) (excluding one prescribed by Cabinet Order);

小規模企業共済法(昭和四十年法律第百二号)第二条第二項(定義)に規定する共済契約(政令で定めるものを除く。)に基づく掛金

Article 75, paragraph (2), item (ii)

corporate-type pension participant contributions prescribed in Article 3, paragraph (3), item (vii)-2 (Approval of Pension Rules) of the Defined Contribution Pension Act (Act No. 88 of 2001) or individual-type pension participant contributions prescribed in Article 55, paragraph (2), item (iv) (Approval of Pension Rules) of that Act;

確定拠出年金法(平成十三年法律第八十八号)第三条第三項第七号の二(規約の承認)に規定する企業型年金加入者掛金又は同法第五十五条第二項第四号(規約の承認)に規定する個人型年金加入者掛金

Article 75, paragraph (2), item (iii)

installments under a contract related to a mutual aid system prescribed by Cabinet Order as prescribed in Article 9, paragraph (1), item (iii), (c) (Nontaxability of Pensions and Similar Benefits).

第九条第一項第三号ハ(年金等の非課税)に規定する政令で定める共済制度に係る契約に基づく掛金

Article 75, paragraph (3)

A deduction under paragraph (1) is referred to as a deduction for small enterprise-based mutual aid premiums and similar payments.

第一項の規定による控除は、小規模企業共済等掛金控除という。

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