The man identified as Zakaria J "has been charged with terrorist murders and participation in the activities of a terrorist group", the prosecutor's office said in a statement.
The Belgian national, who was arrested in the troubled immigrant neighbourhood of Molenbeek on Wednesday, is being kept in police custody, it added.
Zakaria, who was born in 1986, was arrested Wednesday, a day before police carrying out another raid in Molenbeek detained Mustafa E., a Moroccan national who was born in 1981.
No weapons or explosives were found in the raids in Molenbeek, an area dubbed a hotbed of jihadists which has seen a string of raids since the November 13 Paris attacks.
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French President Francois Hollande has said that the Paris attacks were planned in Syria but prepared and organised in Belgium. The Islamic State group has claimed responsibility for the attacks.
Last week Belgium said it had identified three safe houses used by key suspects including presumed ringleader Abdelhamid Abaaoud, a Molenbeek resident who was killed in a French police raid days after the Paris attacks.
Four suspects remain at large, including Salah Abdeslam who allegedly drove suicide bombers to the French national stadium outside Paris, as well as Mohamed Abrini, suspected of having helped scout out the attack sites. Both are from Molenbeek.