Monthly Government Spending

In a discussion about the national debt a few days ago, a friend of mine claimed that all federal government departments are already exceeding their projected spending for the first few months of 2004, and thus the deficit for this year will certainly be larger than the projected amount. All sources of information that I know of only report budget data for the various departments on an annual basis, and the reports don’t come out until several months after the fact. So:

  1. How often do government departments have to report their spending?

  2. If there is monthly data rather than just annual, where can we find it?