Hi DEaccounting,
Welcome to QuickBooks Community. QuickBooks Desktop can help you save a tremendous amount of time when entering transactions by importing data. You can import things like your bank transactions, accountant’s changes, general journal entries, and batch transactions. You can also import your customers and suppliers.
To import data from Excel to QuickBooks Desktop, you can refer this article: https://quickbooks.intuit.com/learn-support/en-ca/getting-started/import-or-export-ms-excel-files/00...
I hope this helps. If you have more questions related to QuickBooks, feel free to reach out here.