Income tax, state; rolling conformity.

Income tax; rolling conformity. Providesthat when Virginia does not conform on a rolling basis to federaltax laws due to any changes in a single act of Congress with an impactof more than $15 million on revenues in the year in which the amendmentwas enacted or any of the next four years, such nonconformity shallnot be considered for purposes of calculating the nonconformity thresholdfor all amendments in a year with a cumulative projected impact ofmore than $75 million in the year in which the amendments were enactedor any of the next four years.