Rev. & Tax. Code, § 17501

(a) Subchapter D of Chapter 1 of Subtitle A of the Internal Revenue Code, relating to deferred compensation, shall apply, except as otherwise provided.

(b) Notwithstanding the specified date contained in paragraph (1) of subdivision (a) of Section 17024.5, Part I of Subchapter D of Chapter 1 of Subtitle A of the Internal Revenue Code, relating to pension, profitsharing, stock bonus plans, etc., and Part III of Subchapter D of Chapter 1 of Subtitle A of the Internal Revenue Code, relating to rules relating to minimum funding standards and benefit limitations, shall apply, except as otherwise provided, without regard to taxable year to the same extent as applicable for federal income tax purposes.

(c) For taxable years beginning before January 1, 2025, the maximum amount of elective deferrals (as defined in Section 402(g)(3)) for the taxable year that may be excluded from gross income under Section 402(g) of the Internal Revenue Code, as applicable for state purposes, shall not exceed the amount of elective deferrals that may be excluded from gross income under Section 402(g) of the Internal Revenue Code, as in effect on January 1, 2010, including additional elective deferrals under Section 414(v) of the Internal Revenue Code, as in effect on January 1, 2010.

(d) (1) For taxable years beginning on or after January 1, 2002, the basis of any person in the plan, account, or annuity shall be increased by the amount of elective deferrals not excluded as a result of the application of the elective deferral limitations imposed by subdivision (c).

(2) Any basis described in paragraph (1) shall be recovered in the manner specified in Section 17085.

(e) Notwithstanding the limitations provided in subdivision (c), any income attributable to elective deferrals in taxable years beginning on or after January 1, 2002, in conformance with Part I of Subchapter D of Chapter 1 of Subtitle A of the Internal Revenue Code, as applicable for federal and state purposes, shall not be includable in the gross income of the individual for whose benefit the plan or account was established until distributed pursuant to the plan or by operation of law.

(f) (1) Section 408A(e)(1)(C) of the Internal Revenue Code, relating to qualified rollover contribution, shall not apply.

(2) In the case of any distribution made under Section 529(c)(3)(E) of the Internal Revenue Code, relating to the special rollover to Roth IRAs from long-term qualified tuition programs, treated for federal income tax purposes as a “qualified rollover contribution” under Section 408A(e)(1)(C) of the Internal Revenue Code, the amount of that distribution shall, notwithstanding Section 529 or Section 408A of the Internal Revenue Code to the contrary, be includable in the gross income of the distributee in the manner as provided under Section 72 of the Internal Revenue Code.

(3) Notwithstanding any other provision, no increase in the basis of the Roth IRA, as defined in Section 408A of the Internal Revenue Code, shall result from any amount distributed as described in this subdivision.