2009 California Revenue and Taxation Code - Section 17651 :: Article 2. Taxation Of Business Income Of Certain Exempt Organizations

17651.  (a) There is hereby imposed for each taxable year on the
unrelated business taxable income (as defined in Section 23732) of
every trust a tax computed as provided in subdivision (e) of Section
17041. In making that computation for purposes of this section, the
term "taxable income" as used in subdivisions (a) and (e) of Section
17041 shall be read as "unrelated business taxable income" as defined
in Section 23732.
   (b) The tax imposed by subdivision (a) shall apply in the case of
any trust which is exempt, except as provided in this article, from
taxation under this part by reason of Section 17631 and which, if it
were not for such exemption, would be subject to Chapter 9
(commencing with Section 17731) relating to estates, trusts,
beneficiaries, and decedents.