(a)
In the case of any tax imposed by Part 10 (commencing with Section 17001) or Part 11 (commencing with Section 23001) with respect to any person, the period for filing a claim for credit or refund of any overpayment attributable to any partnership item of a federally registered partnership shall not expire before the later of the following:
(1)
The date which is five years after the date prescribed by law (including extensions thereof) for filing the partnership return for the partnership taxable year in which the item arose.
(2)
If an agreement under Section 6501(c)(4) of the Internal Revenue Code of 1954 extending the period for the assessment of any deficiency attributable to the partnership item is made before the date specified in paragraph (1), the date six months after the expiration of the extension.
In any case to which the preceding sentence applies, the amount of the credit or refund may exceed the portion of the tax paid within the period provided in Section 19306 or 19308, whichever is applicable.
(b)
For purposes of this subdivision, “partnership item” and “federally registered partnership” have the same meanings as when used in Section 19063.