The latest figure compares with a state sector deficit of 3.3 billion euros in June last year. The Treasury said tax revenues had increased by 700 million euros in June.
To drive down the budget deficit as Italy seeks to avoid European Union disciplinary action over excessive debt, the Treasury also received 805 million euros in retained earnings from CDP.
In the first six months of the year Italy's state sector borrowing requirement totaled 33.4 billion euros, around 7.9 billion euros below the level of the first half of 2018.