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Updated: April 07, 2025

.TAX File Extension

There is only one filetype that uses .TAX file extension and it is TurboTax Tax Return.

TurboTax Tax Return

File category: Data Files
Developer: Intuit
Open with: Intuit TurboTax
Platforms: Windows, macOS

A TAX file is a tax return document created and used by TurboTax, a popular tax preparation software in the United States. These files contain all the data necessary for completing federal and state tax returns for individuals or small businesses. The TAX format stores your personal tax information, calculations, deductions, credits, and other financial data needed for filing taxes electronically.

The TAX file format was introduced in the early 1990s when TurboTax began offering electronic tax preparation and filing services. The format has evolved over time to accommodate changes in tax laws and reporting requirements.

TAX files are primarily used in the following ways:

  • Tax preparation: Users enter their financial information into TurboTax, which saves this data in TAX files.
  • Year-to-year transfers: TurboTax can import information from previous years' TAX files to streamline the tax preparation process.
  • Record keeping: Many people keep their TAX files as digital records of their tax returns.
  • Data backup: TAX files serve as backups during the tax preparation process, allowing users to save their progress.
  • Electronic filing: The information in TAX files is used to generate the official forms submitted to tax authorities.

How to Open .TAX as TurboTax Tax Return

TAX files can be opened with:

  • TurboTax: The primary and recommended application for opening TAX files. You'll need the version that created the file or a newer version.
  • H&R Block Tax Software: Some versions can import TAX files from TurboTax, though full compatibility isn't guaranteed.
  • TaxAct: Limited importing capabilities for some TAX file data.

To open a TAX file:

  1. Launch TurboTax
  2. Select "Open an existing return"
  3. Browse for and select your TAX file
  4. Enter any required passwords if the file is protected

How to Convert an TAX File

TAX files can be converted to several formats:

  • PDF: TurboTax allows you to save completed tax returns as PDF files, which are more universally accessible and suitable for long-term archiving.
  • TXF: Some tax data can be exported to TXF (Tax Exchange Format) files for use with other financial software.
  • Excel/CSV: Certain tax information can be exported to spreadsheet formats for analysis or record-keeping.

To convert a TAX file:

  1. Open the TAX file in TurboTax
  2. Look for export or save options under the File menu
  3. Select "Save as PDF" or the appropriate export option
  4. Choose a location to save the converted file

Remember that converting to other formats may not preserve all the interactive features and calculations that are available in the original TAX file.

Applications That Open TAX Files

Windows Apps for TAX Files:

macOS Apps for TAX Files:

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