Monthly Budget Review for July 2015 (Bolding mine):

The federal government's budget deficit amounted to $463 billion for the first 10 months of fiscal year 2015, CBO estimates. That deficit was $2 billion larger than the one recorded during the same period last year. If not for shifts in the timing of certain payments (which otherwise would have fallen on a weekend), the deficit for the 10-month period would have declined by $41 billion. On the basis of the government's revenues and spending so far this fiscal year, CBO expects that the annual deficit will total about $425 billion, which would be less than the $486 billion that the agency projected in March. CBO will publish new multiyear budget projections later in August.

Hmm. $61 billion improvement over four months. Pretty significant however you slice it. And maybe puts some context on 75 year projections put out either by SSA or CBO.