That would be nice but you won't see it soon.

My father is the IRS SAC(Special Agent in Charge) for 2 states, and last year we were talking about this very thing. He said that eventhough he and all of the other high-ups in the IRS were fed up with dealing with the tax software companies and the fact that they were not providing good solutions the IRS could not make its own software for the public to use. The reason is that the federal government is not allowed by law to compete against private coorporations. If the IRS were to make a software program that the public could use, it would be provided free and that would destroy the private companies in the market. In order to do this, the IRS would have to get Congress to make some law that gave them special permission to do this, and of course every software company in the tax software market would fight it with money in Congress and in the courts and plenty of other "public interest groups" would probably fight it too.

The only other way that the IRS could do it would be to request bids from software companies and get one of them to create the program, however this would have the same effect on the market because that program would also have to been made freely available.

So there is the reasoning of why the IRS does not already have a program available from the horse's mouth as it were.