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Updated: April 07, 2025

.T15 File Extension

There is only one filetype that uses .T15 file extension and it is H&R Block 2015 Tax Return.

H&R Block 2015 Tax Return

File category: Data Files
Developer: H&R Block
Open with: H&R Block Tax Software
Platforms: Windows, macOS

A T15 file is a tax return document specifically created and used by the 2015 versions of H&R Block Tax Software and H&R Block Online. The file contains completed U.S. federal tax forms, any required state tax forms for the 2015 tax year, and all the personal tax information entered by the user during the tax preparation process.

T15 files serve several important functions in the tax preparation process:

  • Work in Progress: Users can save their tax return as a T15 file and continue working on it later, allowing them to complete complex tax returns over multiple sessions.

  • Data Storage: The format stores all entered financial information, completed tax forms, and calculations in a single file.

  • Electronic Filing: Once completed, users can electronically file (e-file) their tax returns directly from H&R Block's software or online platform.

  • Physical Submission: Alternatively, users can print the completed tax return and mail it to the appropriate tax authorities.

How to Open .T15 as H&R Block 2015 Tax Return

T15 files can only be opened with specific software:

  • H&R Block Tax Software 2015
  • H&R Block Online (2015 version)

Attempting to open a T15 file with other applications will likely result in errors or garbled content, as the format is proprietary to H&R Block's 2015 tax preparation tools.

Converting T15 Files

T15 files can be converted to several other formats:

  • PDF: Both H&R Block Tax Software and H&R Block Online allow users to export their completed tax returns as PDF files for archiving or sharing purposes.

  • Printed Documents: The software can convert T15 files to physical printed documents for manual filing.

  • Newer H&R Block Formats: While direct conversion to newer H&R Block file formats (like T16, T17, etc.) isn't typically supported, tax information from a T15 file can often be imported into newer versions of H&R Block software during the tax preparation process.

How to Convert an T15 File

To convert a T15 file to PDF:

  1. Open the T15 file in H&R Block Tax Software 2015
  2. Navigate to the print or export options
  3. Select "Save as PDF" or a similar option
  4. Choose a save location for the PDF file

This conversion capability allows users to maintain permanent, readable records of their tax returns even if they no longer use the original H&R Block software.

Applications That Open T15 Files

Windows Apps for T15 Files:

macOS Apps for T15 Files:

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