Pregnant women in the north of the country who can prove economic difficulty will be given €250 a month for 18 months.
The government-sponsored policy was a key campaign promise of Roberto Formignoni, the centre-Right governor of the Lombardy region, who was elected in regional polls in March. Despite heavy budget cuts, Mr Formignoni said €5 million had been set aside to fund the scheme, which would apply to women who earned less than €23,000 a year and had other children to support.
The move was dismissed by pro-choice activists as propaganda. Critics questioned how women would cope once the anti-abortion "bonus" ran out after a year and a half.
Cinzia Sasso, a feminist writer in Milan, wrote on the website of La Repubblica that the money set aside would only help 1,000 women.
A spokesman for the Italian Bishops' Conference hailed the new policy, saying: "Anything that respects life is to be applauded."
Abortion was legalised in Italy in 1978.