Where the district director (or, in the case where the regional commissioner referred to in Article 48-3 of the Inheritance Tax Act has taken over the affairs prescribed in that Article, that regional commissioner; the same applies in the following paragraph, Article 70-10, paragraph (1) and Article 70-12, paragraph (1)) grants permission for deferred payment of the amount of inheritance tax under the provisions of Article 38, paragraph (1) of that Act, if the proportion of the value of standing timber located within an area for which a forest management plan prescribed in Article 69-5, paragraph (2), item (i) has been established (excluding standing timber located within a district relating to the development of a forest health facility prescribed in that item, and limited to standing timber specified by Order of the Ministry of Finance as timber for which forest operations are to be carried out efficiently as a whole; the same applies hereinafter in this Article) in the total value of the property acquired by inheritance or bequest that formed the basis for calculating that amount of inheritance tax (referred to as the "value of taxable inherited property" hereinafter in this Article) is two-tenths or more, and the proportion of the value of real property, etc. prescribed in Article 38, paragraph (1) of that Act in the value of taxable inherited property is five-tenths or more, the district director may, upon application by the person liable for tax and notwithstanding the provisions of that paragraph, set the deferred payment period for the portion of tax calculated pursuant to the provisions of Cabinet Order as corresponding to the value of that standing timber, out of the amount of inheritance tax for which that permission for deferred payment is granted (referred to as the "tax on standing timber under a forest plan" hereinafter in this Article), at a period within 20 years (or, for the tax on standing timber under a forest plan relating to standing timber located within an area specified by Order of the Ministry of Finance out of the area of forests for operations by public-interest function prescribed in Article 5, paragraph (2), item (vi) of the Forest Act (referred to as the "tax on standing timber under a specified forest plan" hereinafter in this paragraph), within 40 years). In this case, if the deferred tax amount prescribed in Article 38, paragraph (1) of the Inheritance Tax Act is less than 2,000,000 yen (or, in the case where that deferred tax amount is that tax on standing timber under a specified forest plan, 4,000,000 yen), the period for which that permission for deferred payment may be granted may not exceed the number of years equivalent to the number obtained by dividing that deferred tax amount by 100,000 yen (or, if that number has a fraction of less than one, the number with that fraction counted as one).
税務署長（相続税法第四十八条の三の国税局長が同条に規定する事務の引継ぎを受けた場合には、当該国税局長。次項、第七十条の十第一項及び第七十条の十二第一項において同じ。）は、同法第三十八条第一項の規定により相続税額について延納の許可をする場合において、相続又は遺贈により取得した財産で当該相続税額の計算の基礎となつたものの価額の合計額（以下この条において「課税相続財産の価額」という。）のうちに第六十九条の五第二項第一号に規定する森林経営計画が定められている区域内に存する立木（同号に規定する森林保健施設の整備に係る地区内に存する立木を除き、一体として効率的に森林施業を行うこととされているものとして財務省令で定めるものに限る。以下この条において同じ。）の価額の占める割合が十分の二以上であり、かつ、課税相続財産の価額のうちに同法第三十八条第一項に規定する不動産等の価額の占める割合が十分の五以上であるときは、当該延納の許可をする相続税額のうち当該立木の価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部分の税額（以下この条において「森林計画立木部分の税額」という。）に係る延納期間については、納税義務者の申請により、同項の規定にかかわらず、二十年以内（森林法第五条第二項第六号に規定する公益的機能別施業森林の区域のうち財務省令で定める区域内に存する立木に係る森林計画立木部分の税額（以下この項において「特定森林計画立木部分の税額」という。）にあつては、四十年以内）とすることができる。この場合において、相続税法第三十八条第一項に規定する延納税額が二百万円（当該延納税額が当該特定森林計画立木部分の税額である場合には、四百万円）未満であるときは、当該延納の許可をすることができる期間は、当該延納税額を十万円で除して得た数（その数に一未満の端数があるときは、これを一とする。）に相当する年数を超えることができない。