BRASILIA, June 25 (Reuters) - Brazil's central government posted a primary budget deficit of 8.051 billion reais ($2.58 billion)in May, the country's treasury said on Thursday.
The central government account, which covers federal ministries, the central bank and social security, posted a primary surplus of 10.085 billion reais in April.
So far this year the central government has accumulated a surplus of 6.626 billion reais, just 12 percent of its goal in 2015.
The central bank will release the consolidated primary balance, which includes states and municipalities, on Tuesday. ($1 = 3.1207 Brazilian reais) (Reporting by Luciana Otoni; Writing by Alonso Soto; Editing by Chris Reese)