California Revenue And Taxation Code — Other Taxes — Allocation Of Income — Uniform Division Of Income For Tax Purposes Act — Property factor Date: 15 Sep 2016 TEXT PDF Current through the 2016 Legislative Session The property factor is a fraction, the numerator of which is the average value of the taxpayer's real and tangible personal property owned or rented and used in this state during the taxable year and the denominator of which is the average value of all the taxpayer's real and tangible personal property owned or rented and used during the taxable year. Ca. Rev. and Tax. Code § 25129 Amended by Stats 2000 ch 862 (AB 1843), s 222, eff. 1/1/01.