Passive activity
(1) Passive activity and former passive activity have the meanings given in section 469 (c) and (f)(3); (2) The unused passive activity loss (determined as of the first day of a taxable year) is the passive activity loss (as defined in section 469(d)(1)) that is disallowed under section 469 for the previous taxable year; and (3) The unused passive activity credit (determined as of the first day of a taxable year) is the passive activity credit (as defined in section 469(d)(2)) that is disallowed under section 469 for the previous taxable year.