第一項
Supplementary Provisions, Article 5, paragraph (1)
昭和四十七年において純損失の金額がある場合における新法第百四十条第一項（純損失の繰戻しによる還付の請求）又は第百四十一条第一項（相続人等の純損失の繰戻しによる還付の請求）（これらの規定を新法第百六十六条（非居住者に対する準用）において準用する場合を含む。）の規定の適用については、これらの規定による還付金の計算の基礎となる所得税の額は、附則第三条第三項（昭和四十六年分の所得税の所得控除等及び税額の計算に係る特例）の規定（同条第二項の規定により読み替えられた新法第九十条第二項（変動所得及び臨時所得の平均課税）の規定を含む。）を適用して計算した所得税の額による。
With regard to the application of Article 140, paragraph (1) (Claim to Be Issued a Refund Based on Carryback of Net Loss) or Article 141, paragraph (1) (Claim by an Heir to Be Issued a Refund Based on Carryback of Net Loss) of the new Act (including as applied mutatis mutandis pursuant to Article 166 (Application Mutatis Mutandis to Nonresidents) of the new Act) in the case where there is a Net Loss in 1972, the amount of income tax that forms the basis for calculating the refund under those provisions is the amount of income tax calculated by applying Article 3, paragraph (3) (Special Provisions on Income Deductions, etc. and Calculation of Tax Amounts for Income Tax for 1971) of the Supplementary Provisions (including Article 90, paragraph (2) (Averaging Taxation on Fluctuating Income and Ad Hoc Income) of the new Act as deemed to be replaced pursuant to paragraph (2) of that Article).