Mauricio Macri and Jair Bolsonaro will meet in Brasilia in two weeks to develop a bilateral agenda and in particular a joint approach to the Mercosur trading bloc and Venezuela, according to media reports.
President Macri did not attend Bolsonaro's inauguration on Tuesday, instead sending Foreign Affairs Minister Jorge Faurie.
The pair will meet on January 16 in the Brazilian capital, the Foreign Ministry confirmed.
"I wish to send my best wishes to Jair Bolsonaro on the day he becomes the president of Brazil, our friend and brother country. I trust that our governments will continue collaborating for the prosperity of our people", Macri wrote on Twitter.
In October, Brazil's new Finance Minister Paulo Guedes said "Argentina is not a priority, neither is the Mercosur".
Bolsonaro's Foreign Affairs Minister Ernesto Araújo represented Brazil during the construction of the bloc in the 1980s alongside his current Argentine counterpart Faurie. The pair met as recently as December during the G20 summit in Buenos Aires alongside Argentine Production Minister Dante Sica.
The Bolsonaro administration "sees a need to bring greater dynamism to the Mercosur", Faurie said at the time. "The government of Bolsonaro aims to put value on [Brazil's] relationship with Washington", he added.