Ricardo Lacerda made the prediction in an interview with Reuters, as recent figures showed that Citigroup has worked on 19 takeovers this year - already matching the total deals it was involved in over the whole of 2006.
Advisory fees from the deals have netted the bank $15 billion so far.
He told Reuters: "The M&A business is extremely robust.Given the volume of deals already announced and what's in the pipeline for the main banks, this could easily be another record year."
News of Citigroup's Brazilian unit's performance comes as the regions' booming capital markets continue have led to a recruitment drive on the part of both Morgan Stanley and UBS to capitalize.
The buoyancy of the market is born out by figures showing that IPOs are at record levels and a report from Credit Suisse indicating that trading at its Brazilian brokerage has doubled during the first-half of this year.