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    Rates & Economy

    Overnight Rate

    Quick Definition

    The interest rate at which major banks lend each other money overnight.

    Full Explanation

    The overnight rate (also called the policy interest rate or key interest rate) is the rate at which major Canadian banks lend money to each other for one-day periods. The Bank of Canada sets a target for this rate and announces changes 8 times per year. The overnight rate is the primary tool of monetary policy — raising it slows borrowing and spending to cool inflation; lowering it stimulates borrowing and economic activity. The prime rate, which directly affects consumer and business borrowing, is typically the overnight rate plus 2.20%.

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