If you need transactions imported more than 90 days back, you will need to contact your bank to get a CSV (comma separated values) spreadsheet from your bank for the affected time period. You may need to pay your bank a fee for this unless there is an extenuating circumstance, such as the bank feed coming into Quickbooks reversed for an extended period of time.  Otherwise, everything needs to be entered manually. The CSV file can be imported into Quickbooks.