(a)

(1) Sections 453, 453A, and 453B of the Internal Revenue Code, relating to installment method, special rules for nondealers, and gain or loss on disposition of installment obligations, respectively, shall apply, except as otherwise provided.

(2) Sections 811(c)(4), 811(c)(6), and 811(c)(7) of Public Law 99-514, as modified by

Section 1008(

f) of Public Law 100-647, shall apply to each taxable year beginning on or after January 1, 1988.

(3) Section of Public Law 99-514, relating to the disallowance of use of the installment method for certain obligations, as modified by

Section 1008(

g) of Public Law 100-647, shall apply to each taxable year beginning on or after January 1, 1988. (

b) For purposes of subdivision (a), any references in the Internal Revenue Code to sections that have not been incorporated into this part by reference shall be deemed to refer to the corresponding section, if any, of this part. (

c) In the case of any taxpayer who made sales under a revolving credit plan and was on the installment method under former

Section or for the taxpayer’s last taxable year beginning before January 1, 1988, the provisions of this

section shall be treated as a change in method of accounting for the first taxable year beginning after December 31, 1987, and all of the following shall apply:

(1) That change shall be treated as initiated by taxpayer.

(2) That change shall be treated as having been made with the consent of the Franchise Tax Board.

(3) The period for taking into account adjustments under

Article 6 (commencing with

Section 24721) by reason of that change shall not exceed four years. (

d) The repeal of

Section 453C of the Internal Revenue Code by

Section 10202(

a) of Public Law 100-203, relating to repeal of the proportionate disallowance of the installment method, shall apply to dispositions on or after January 1, 1990, in taxable years beginning on or after January 1, 1990. (e)

(1) In the case of any installment obligations to which

Section 453( l )(2)(

B) of the Internal Revenue Code applies, in lieu of the provisions of

Section 453( l )(3)(

A) of the Internal Revenue Code, the “tax” (as defined by subdivision (

a) of

Section 23036) for any taxable year for which payment is received on that obligation shall be increased by the amount of interest determined in the manner provided under

Section 453( l )(3)(

B) of the Internal Revenue Code.

(2) Sections and of Public Law 100-203, are modified to provide for each of the following: (

A) Section shall apply to dispositions in taxable years beginning on or after January 1, 1990. (

B) Section shall apply to costs incurred in taxable years beginning on or after January 1, 1990. (

C) Any adjustments required by

Section of the Internal Revenue Code shall be included in gross income as follows: (

i) Fifty percent in the first taxable year beginning on or after January 1, 1990. (ii) Fifty percent in the second taxable year beginning on or after January 1, 1990. (f)

(1) The amendments to

Section 453A of the Internal Revenue Code made by

Section of Public Law 100-647, relating to special rules for nondealers, shall apply to each taxable year beginning on or after January 1, 1990.

(2) In the case of any installment obligation to which

Section 453A of the Internal Revenue Code applies and which is outstanding as of the close of the taxable year, in lieu of the provisions of

Section 453A(c)(1) of the Internal Revenue Code, the “tax” (as defined by subdivision (

a) of

Section 23036) for the taxable year shall be increased by the amount of interest determined in the manner provided under

Section 453A(c)(2) of the Internal Revenue Code.

(3) The provisions of

Section 453A(c)(3)(

B) of the Internal Revenue Code, relating to the maximum rate used in calculating the deferred tax liability, are modified to refer to the maximum rate of tax imposed under

Section 23151, 23186, or 23802, whichever applies, in lieu of the maximum rate of tax imposed under

Section or of the Internal Revenue Code.