National statistics agency ISTAT will publish 2019 public finance data on March 2.

"We will achieve the deficit targets and in 2019 we will do something better," Gualtieri said in a television interview with state broadcaster RAI.

The last time Italy posted a deficit below 2.2% was in 2007.

In September, the government of the anti-establishment 5-Star Movement and the centre-left Democratic Party targeted the budget deficit at 2.2% in 2019 and 2020. It was also 2.2% in 2018.

Gualtieri said the Italian economy probably grew by 0.2% in 2019, slightly better than the 0.1 officially estimated by the government.

The Bank of Italy last week also said the 2019 budget deficit would come in below target, and estimated a GDP growth rate of 0.2%.

Despite the slight fall in the deficit last year, Italy's public debt - proportionally the highest in the euro zone after that of Greece - is targeted by the government to rise in 2019 from its 2018 level of 134.8%.

(Reporting by Giuseppe Fonte, editing by Gavin Jones)