File extensions used in QuickBooks for Backups

The following table describes about the file extensions that QuickBooks uses for backing up the files (creates, imports, or exports).

Extension File type Description
.IIF Intuit Interchange Format file You can import and export the lists and/or transactions by using the text files with an .IIF extension.
.ND QuickBooks Network Data File A configuration file that allows access to QuickBooks company file. Do not delete this configuration file.
.QBA Accountant’s Copy working file When you export your QuickBooks data for your accountant to review, then the accountant will restore the export file on his or her computer as a file with a .QBA extension.
.QBA.TLG transaction log file
(for Accountant’s Copy)
When you back up an Accountant’s Copy, QuickBooks starts a log of transactions that you’ve entered since the last time you backed up. In case of accidental loss of data, then

Intuit Technical Support may use your most recent backup in conjunction with the transaction log file to recover your data.

.QBB QuickBooks backup file When you backup your company file, then QuickBooks will save the backup file with a .QBB extension. To open a .QBB file, then go to the File menu and click on Restore.
.QBM QuickBooks portable company file When you want to e-mail or move a company file, then QuickBooks will create a compressed version of the company file with a .QBM extension.
.QBW QuickBooks for Windows company file When you create a company file, then QuickBooks will save the file with a .QBW extension. For example, if you enter My Business as the company name, QuickBooks will save the file as MyBusiness.QBW.
.QBW.TLG transaction log file
(for QuickBooks company file)
When you back up your company file, then QuickBooks will start a log of transactions that you’ve entered since the last time you backed up. In case of accidental loss of data, Intuit Technical Support may use your most recent backup in conjunction with the transaction log file to recover your data.
.QBX Accountant’s Copy (export file) When you export your QuickBooks data for your accountant to review, QuickBooks will create an Accountant’s Copy with a .QBX extension.
.QBY Accountant’s Copy (import file) When your accountant is finished making changes in an Accountant’s Copy, then he/she will provide you with an .QBY file to be imported into your company file.

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