BRASILIA, April 29 (Reuters) - Brazil's central government posted a primary budget surplus of 1.464 billion reais ($498 million) in March, less than half of what it posted a year ago, the country's treasury said on Wednesday.
The central government account, which covers federal ministries, the central bank and social security, posted a surprise primary deficit of 7.4 billion reais in February.
The country had a primary surplus of 3.2 billion reais in March of 2014.
The central bank will release the consolidated primary balance, which includes states and municipalities, on Thursday.
$1 = 2.9385 Brazilian reais Reporting by Luciana Otoni; Writing by Silvio Cascione