As indicated in the budget documents, the minimum tax on financial institutions is being revised from a two-stage tax to a one-stage tax and the base amount that's not subject to the tax is being reduced. If you look in the budget documents you'll see that the tax cost of the changes to the minimum tax on financial institutions are $15 million in 2006-07 and $30 million in 2007-08.
On December 5th, 2006. See this statement in context.