"It should be a national funeral, because that's what the protocol requires, as he was a head of state," Lucien Jura, spokesman for President Michel Martelly, told AFP.
"But what we don't yet know is whether there will be a decision to put flags at half-mast and declare a period of national mourning."
Martelly's administration is seen as close to figures from the Duvalier era, and on Saturday the president paid tribute to Baby Doc on Twitter as "an authentic son of Haiti."
"On the moral level, he has no right to a national funeral. He was a dictator who did much harm to the country," said former political prisoner and former Port-au-Prince mayor Evans Paul. "But if it's the law that he have one, so be it."
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Jura said a decision would be made later Monday as to how the government would approach the funeral.
Duvalier supporters want Haiti to honor their hero's passing, which would be a setback for the rights activists who have been pursuing him in the courts and battling to end Haiti's culture of legal impunity for the powerful.
Baby Doc came to office in 1971 aged only 19 on the death of his ruthless father. He ruled for 15 years before being driven into exile, and only returned as a private citizen in 2011 in the aftermath of a devastating earthquake.
He died on Saturday of a heart attack at age 63. An estimated 30,000 people were killed during his reign and that of his father.
Duvalier's death was greeted with indifference by the bulk of the population in a country still struggling to get back on its feet after the 2011 earthquake, but political tensions are running high ahead of a planned legislative election later this month.