The transaction is also fraught with regulatory risks, analysts said, though RBC argues that HSBC's Canada business accounts for just 2% of Canadian banking market share.
The finance minister has the authority to impose any terms and conditions, the finance department said in a statement.
"This regulatory assessment isn't likely to be completed for some time," Calvin Goldman, former commissioner of Canada's competition bureau, told Reuters, referring to the latest deal.
QUICK MOVEDespite the expected regulatory risks, RBC was keen to move quickly.
RBC is paying 9.4 times HSBC's 2024 adjusted earnings, which KBW analysts said was a steep price, though offset by savings potentials.