①When gross income, retirement income, or timber income is calculated, if real property income, business income, timber income, or capital gains are calculated to be a loss, that loss is offset against other Income in Each Class, in the order prescribed by Cabinet Order.

②In the case referred to in the preceding paragraph, if part of the loss prescribed in that paragraph is a loss that arises when the amount of income from assets as prescribed in Article 62, paragraph (1) (Loss of Assets Not Ordinarily Necessary in Everyday Life, Due to Disaster) is calculated (hereinafter such an amount of income is referred to as "income from assets not ordinarily necessary in everyday life" in this paragraph), the part of that loss that Cabinet Order prescribes is to be offset against other income from assets not ordinarily necessary in everyday life pursuant to Cabinet Order, and any part of that loss other than what Cabinet Order prescribes as well as any amount that is not fully offset is deemed to have never existed.

①If a Resident filing a Tax Return has had a Net Loss in any of the three years prior to the relevant year (but only one in which the Resident filed a Blue Return for the year's income taxes) (this Net Loss excludes any amount deducted in or before the previous year pursuant to the provisions of this paragraph and any amount used as the basis for calculating the amount to be refunded pursuant to the provisions of Article 142, paragraph (2) (Issuance of Refunds Based on Carryback of Net Loss)), the equivalent of the Net Loss is applied as a deduction pursuant to Cabinet Order when the amount of gross income, retirement income, or timber income for the year of the Tax Return is calculated.

②If part of the Net Loss of a Resident filing a Tax Return in any of the three years prior to the relevant year (such a Net Loss excludes any amount that is subject to the provisions of the preceding paragraph and any amount used as the basis for calculating the amount to be refunded pursuant to the provisions of Article 142, paragraph (2)) is an amount of loss incurred in any of those years which is as follows and which is as prescribed by Cabinet Order, the amount that Cabinet Order prescribes as the equivalent of the Net Loss is applied as a deduction pursuant to Cabinet Order when the amount of gross income, retirement income, or timber income for the year of the Tax Return is calculated.

③The amount of a disaster-related loss on business assets as set forth in item (ii) of the preceding paragraph means the amount of a loss of Inventory or assets as prescribed in Article 51, paragraph (1) or paragraph (3) (Inclusion of Losses on Assets in Necessary Expenses) (including the amount of any unavoidable Disaster-related expenses prescribed by Cabinet Order and other than any part of the loss covered by insurance benefits, compensation for damage, or anything similar to these) due to Disaster which does not fall under the category of an amount of loss set forth in item (i) of the preceding paragraph.

④The provisions of paragraph (1) and paragraph (2) apply only if the Resident prescribed therein files a Tax Return for income taxes in the year in which the Net Loss arises and if the Resident continues to file a Tax Return thereafter.

⑤A deduction under paragraph (1) or paragraph (2) is referred to as a deduction for carryover of net loss.