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QuickBooks File Extensions & Formats

Brianna Blaney
By Brianna Blaney
Brianna Blaney

Brianna Blaney

Brianna Blaney began her career as a fintech writer in Boston for a major media corporation, later progressing to digital media marketing with platforms in San Francisco. She has worked as a financial writer for Tipalti for 7+years, keeping a close eye on shifting trends and reporting on the ever-evolving landscape of financial automation. She prides herself on reverse-engineering the logistics of successful content and implementing techniques centered around people (not campaigns). In her spare time, she loves to cook and take care of her pet squirrel, Marshmallow.

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Updated November 17, 2024
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Explore the top 7 ways you can solve common Quickbooks problems with automation.

As the QuickBooks online enterprise expands, it makes sense that they need to grow their library of file extensions to accommodate the big data. QuickBooks Desktop uses different file types to express varying forms of information. For example, your main company files (QBW) are in a whole other realm than the backup data files (QBB). 

What is a Quickbooks File Extension?

A Quickbooks file extension is a type of file extension that is exclusively used (and owned) by Quickbooks to help keep track of big data. The most common Quickbooks file extension is QBW (company file), followed by QBB (backup file) and QuickBooks Online (bank statement file).

File formats also differ depending on your operating system and the version of QuickBooks being used. Are you working with Windows or Mac? QuickBooks 2016 or 2019? To get started, it’s best to understand the most common file extensions and what they represent.

QuickBooks Common File Extensions

QuickBooks files are generally categorized by what they do and how they function. So, what are the key file extensions used in QuickBooks? Here are the top ones you should know:

QuickBooks Files for Windows

QBW

File type: QuickBooks Company file

Whenever you generate a company file in the system, it is assigned the .qbw extension. This holds your company file and account data. For example, if you create a company called Easy123, it would appear in QuickBooks as Easy123.qbw. The qbw file is one of the most popular on the platform. 

QBB

File type: QuickBooks Backup file

Every time you back up a company file, QuickBooks creates a backup in the system and assigns it a .qbb extension. Familiarize yourself with the qbb file as you will see them a lot. When you restore your company backup file (qbb) that contains company data and accounting data, QuickBooks creates a new (qbw) company file based on the last backup saved. 

QBM

File type: QuickBooks Portable file

If you move or email a company file, a compressed version of the file is created and assigned a qbm extension. This qbm file process helps to track the path of your data.

QBO

File type: QuickBooks Bank Statement file

When a business downloads transactions from their bank, QuickBooks opens them with a .qbo file format. You can also import a qbo file to quickly export transactions into your bank register. These files help to facilitate online banking.

QBR

File type: QuickBooks Report Template file

QuickBooks saves time by creating templates to retain customization settings for future use. If you memorize a report template and export it, QuickBooks will attach a qbr extension to the file that’s created. 

QSM

File type: QuickBooks Statement Writer file

For working in Excel, QuickBooks Statement Writer files are used. QuickBooks saves information in a file with a qsm extension. 

QSS

File type: QuickBooks Statement Writer file

When using QuickBooks Statement Writer to customize reports and statements, your settings are saved in a file with a qss extension in QuickBooks. You can customize other reports with your qss file. 

QST

File type: QuickBooks Statement Writer file

To use an available template file for a layout, use a qst extension file. 

QuickBook Files for Accountants

QBX

File type: Accountant’s Review Copy/Transfer file

If you make a backup of your company file for an accountant, QuickBooks assigns the .qbx file extension. The qbx extension makes it easier when it comes to tax time. The qbx is a portable company file you export and send to an accountant. When the backup is opened, it becomes an accountant’s copy file.

QBA

File type: Accountant’s Copy file

These QuickBooks file extension types are created when an accountant opens a qbx file. When these are sent for review it becomes an accountant copy. The accountant converts the client’s qbx file to a qba working file in QuickBooks Accountant to allow them to make changes to their client’s books to adjust and correct transactions. 

QBY

File type: Accountant’s Copy Import file

.qby extensions are QuickBooks file formats created after an accountant opens, reviews, and alters the qba file. You can import these and apply changes to your company file (qbw).

QBJ

File type: General Journal Entries file

If you want to add journal entries created by your accountant, you need a General Journal Entries file. To locate this QuickBooks data, look for the .qbj file extension. 

Utility Files

IIF

File type: Intuit Interchange Format file

An IIF file is an export file created when your data leaves the accounting software. Whenever you export your list info, QuickBooks assigns it an .iif extension.

ND

File type: Network Data file

If you start applying the Multi-user mode, the system will create a .nd file format. This is a configuration file that helps QuickBooks manage your user access settings. 

TLG

File type: Transaction Log file

Every time you back up a file, the platform keeps track of changes to the file. The data is saved with a .tlg extension. The next time you back up the file, QuickBooks resets the data. If an error is made, you can look at the transaction logs and reset them.

LOG

File type: Event Log file

QuickBooks records important events in the system with a .log file extension. There are two types of log files:

  • QWC.log – This records web connect files and errors
  • Qbwin.log – This record issues in the file menu found during rebuild

Log files are the main types used for troubleshooting.

ECML

File type: Entitlement file

When you register and install QuickBooks, it creates a file with an .ecml extension. This extension tells QuickBooks Support you are using a licensed product. 

QBP

File type: QuickBooks Print file

When you set printing preferences, they are saved in a file with a .qbp file. QuickBooks will auto-save your settings. However, if you run into printer problems, you may need to make changes to the file. 

QuickBooks Files for Mac

QB2016

File type:  Company file

For a QuickBooks accountant that uses a Mac, this is the company file extension for the 2016 version.

QB2019

File typeCompany file

This is the company file extension for the 2019 version of QuickBooks Pro for Mac. 

MAC.QBB

File typeBackup file

These QuickBooks file formats are used when you move your Mac files to QuickBooks Desktop for Windows. 

DMG

File typeApple Disk Image file

This extension is the backup for the QuickBooks company file. It is saved as an Apple disk image.

plist

File typeApple Property List file

This stores your preferences and registration data.

Why Use QuickBooks File Extensions?

QuickBooks doesn’t deal with extensions for excel, CSV files, pdf, or text files. The brand has created its own lexicon. Different types of file extensions have different characteristics that serve various purposes. Some reasons for this include:

  • It becomes easier to determine what a file contains by looking at the extension. Everything is identifiable.
  • Users can categorize their data by file extension to prevent disorganization. It also makes for easier auditing.
  • Once a file is recognized, it helps the desktop launch it in the right application.
  • QuickBooks file extensions help users authenticate data files in a means to secure them.

There are over 50 QuickBooks file extension types but you don’t need to remember them all. This list contains what’s important to get started. Although it may feel like you are learning a new language, once you familiarize yourself with these extensions, it streamlines operations, creates a quicker workflow, and saves on time.

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