As explained by a TurboTax Customer Service representative, the reason is there are a set of bills not yet finalized by Congress that are part of the current Fiscal Year budget. These bills pertain to "Agriculture, Energy-Water, Military Construction-VA, and Transportation-HUD programs." Current deadline is March 1st for Congress to finalize (or enact another continuing resolution).
In other words, if they let us file now there is a chance we might need to re-file with a corrected Schedule C in another week or two. That could happen even if you switch to another tax-filing service.
