QBY file is an Intuit QuickBooks Accountant's Import file. QuickBooks for Windows is an accounting software product developed by Intuit Inc. When your accountant is finished making changes in an Accountant's Copy, he or she provides you with a .QBY file to be imported into your company file.

Common .qby file type descriptions:

QuickBooks Accountant Change File

Applications, associated with .qby files

QuickBooks Launcher by Intuit Inc.

.qbx

.qc