You can easily import records (vendors, customers, employees, inventory and service items, and projects) from QuickBooks® .IIF files.
After you set up a company in Sage 50 Accounting, use the Import/Export Wizard on the File menu to import all your QuickBooks records, except accounts. When you import records:
Note: If you are running QuickBooks 2011 or 2012, instead of importing records you can choose to convert your company data into a Sage 50 Accounting company file by creating a new company in Sage 50 Accounting. The conversion process allows you to convert all QuickBooks records, including accounts.
Import records or company data from QuickBooks