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                                                                    EXHIBIT 12.4

                                 VIDEOTRON LTEE
                         FINANCIAL STATEMENTS SCHEDULE
                 SCHEDULE OF VALUATION AND QUALIFYING ACCOUNTS
                   (AMOUNTS IN THOUSANDS OF CANADIAN DOLLARS)

<Table>
<Caption>
                                                     BALANCE,
                                                   BEGINNING OF   CHARGED TO COSTS                    BALANCE,
                                                       YEAR       AND EXPENSES(1)    DEDUCTIONS(2)   END OF YEAR
                                                   ------------   ----------------   -------------   -----------
                                                                                         
Allowance for doubful accounts receivable
  Year ended December 31:
    2001.........................................    $ 7,522           $10,160          $ 9,341        $ 8,341
    2002.........................................      8,341            11,084            8,210         11,215
    2003.........................................     11,215            10,542           14,537          7,220
</Table>

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Notes:

(1) Represents increase in allowance for doubtful accounts receivable charged to
    expenses.

(2) Represents the accounts receivable written-off against the allowance for
    doubtful accounts receivable.