District of Columbia tax changes effective September 14, 2011-third quarter event for most taxpayers

As noted on the District of Columbia website, legislation that mandates unitary combined reporting, adopts a double-weighted sales factor, increases the business minimum tax and makes other tax changes is enacted September 14, 2011, rather than late October as originally anticipated. Accordingly, calendar year taxpayers need to consider the financial statement impact of the changes in computing third quarter tax provisions for the 2011 tax year. [A19-0098]