HB 1556 -- Corporate Income Tax: Formula for Determining Missouri Taxable Income Sponsor: Rizzo This bill expands the formula for determining Missouri corporate income tax liability to allow corporations to apportion income among the various states in which they operate and generate income. Income from separately managed accounts offered by investment funds service corporations headquartered in Missouri after January 1, 2001, will be allowed to be apportioned. "Separately managed account" is defined as a discretionary advisory account held by certain institutional investors pursuant to a investment advisory contract.Copyright (c) Missouri House of Representatives