Taxation of pass through entities.

Authorizes certain pass through entities to make an election to pay tax at the entity level based on each owner's aggregate share of adjusted gross income. Provides a refundable tax credit equal to the amount of tax paid by the electing entity with regard to the owner's share. Allows a credit for pass through entity taxes that are imposed by and paid to another state. Makes certain changes to provisions that apply to taxpayers who file a combined return for the financial institutions tax. Makes conforming changes for purposes of partnership audit and administrative adjustments.