(Reuters) - The United States racked up a $134.15 billion budget deficit in August, the U.S. Treasury said on Tuesday, marking a sharp increase from a year earlier that was due mainly to calendar shifts of payments and one-time adjustments in the August 2010 period.

The cumulative deficit for the first 11 months of fiscal 2011, which ends on September 30, came to $1.234 trillion, down slightly from $1.260 trillion in the same period of fiscal 2010.

The White House on September 1 forecast the federal deficit at $1.316 trillion for fiscal 2011, compared to an actual fiscal 2010 deficit of $1.293 trillion.

Receipts for August rose about $5 billion to $169 billion from $164 billion a year earlier. August outlays jumped by $49 billion, to $303 billion from $255 billion in August 2010...