RTC §19136: (a) Section 6654 of the Internal Revenue Code, relating to failure by an individual to pay estimated income tax, applies, except as otherwise provided.

(a) Section 6654 of the Internal Revenue Code, relating to failure by an individual to pay estimated income tax, applies, except as otherwise provided. (b) Section 6654(a)(1) of the Internal Revenue Code is modified to refer to the rate determined under Section 19521 in lieu of Section 6621 of the Internal Revenue Code. (c) (1) Section 6654(e)(1) of the Internal Revenue Code, relating to exceptions where the tax is a small amount, does not apply. (2) An addition to tax shall not be imposed under this section if the tax imposed under Section 17041 or 17048 and the tax imposed under Section 17062 for the preceding taxable year, minus the sum of any credits against the tax provided by Part 10 (commencing with Section 17001) or this part, or the tax computed under Section 17041 or 17048 upon the estimated income for the taxable year, minus the sum of any credits against the tax provided by Part 10 (commencing with Section 17001) or this part, is less than five hundred dollars ($500), except in the case of a separate return filed by a married person the amount shall be less than two hundred fifty dollars ($250). (d) Section 6654(f) of the Internal Revenue Code does not apply and for purposes of this section the term “tax” means the tax imposed under Section 17041 or 17048 and the tax imposed under Section 17062 less any credits against the tax provided by Part 10 (commencing with Section 17001) or this part, other than the credit provided by subdivision (a) of Section 19002. (e) (1) The credit for tax withheld on wages, as specified in Section 6654(g) of the Internal Revenue Code, is the credit allowed under subdivision (a) of Section 19002. (2) (A) Section 6654(g)(1) of the Internal Revenue Code is modified by substituting the phrase “the applicable percentage” for the phrase “an equal part.” (B) For purposes of this paragraph, “applicable percentage” means the percentage amount prescribed under Section 6654(d)(1)(A) of the Internal Revenue Code, as modified by subdivision (a) of Section 19136.1. (f) This section applies to a nonresident individual. (g) (1) An addition to tax shall not be imposed under this section to the extent that the underpayment was created or increased by either of the following: (A) Any law that is chaptered during and operative for the taxable year of the underpayment. (B) If, for a taxable year prior to its repeal, the adjustment factor for the credit authorized by Section 17052 for the taxable year was less than the adjustment factor for that credit for the preceding taxable year. (2) (A) Notwithstanding Section 18415, subparagraph (A) of paragraph (1) applies to penalties imposed under this section on or after January 1, 2005. (B) Notwithstanding Section 18415, subparagraph (B) of paragraph (1) applies to penalties imposed under this section on or after January 1, 2016. (h) The amendments made to this section by Section 5 of Chapter 305 of the Statutes of 2008 apply to taxable years beginning on or after January 1, 2009. (i) The amendments made to this section by Section 3 of Chapter 15 of the Fourth Extraordinary Session of the Statutes of 2009 apply to amounts withheld on wages beginning on or after January 1, 2009. (j) Notwithstanding subdivision (f), this section shall not apply to a nonresident individual electing to file in a group return pursuant to Section 18537, for taxable years beginning on or after January 1, 2026.