Rev. & Tax. Code, § 17560

(a) The provisions of 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.

(b) The provisions of Section 812 of Public Law 99-514, relating to the disallowance of use of installment method for certain obligations as modified by Section 1008(g) of Public Law 100-647, shall apply to taxable years beginning on or after January 1, 1987.

(c) 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 in taxable years beginning on or after January 1, 1990.

(d) (1) In the case of any installment obligation 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 imposed under Section 17041 or 17048 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) The provisions of Sections 10202 and 10204 of Public Law 100-203 are modified to provide for each of the following:

(A) The provisions of Section 10202 shall apply to dispositions in taxable years beginning on or after January 1, 1990.

(B) The provisions of Section 10204 shall apply to costs incurred in taxable years beginning on or after January 1, 1990.

(C) Any adjustments required by Section 481 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.

(e) (1) 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 imposed by Section 17041 or 17048 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.

(2) 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 17041 in lieu of the maximum rate of tax imposed under Section 1 or 11 of the Internal Revenue Code.