TT15 File Extension

TT15 file icon
TurboTax 2015 Tax Return Format

What is TT15 file?

TT15 is a file extension commonly associated with TurboTax 2015 Tax Return Format files. TT15 file format is compatible with software that can be installed on Mac OS, Windows system platform. Files with TT15 extension are categorized as Database Files files. The Database Files subset comprises 369 various file formats. TurboTax supports TT15 files and is the most frequently used program to handle such files, yet 1 other tools may also be used. TurboTax software was developed by Intuit Inc., and on its official website you may find more information about TT15 files or the TurboTax software program.

Programs which support TT15 file extension

Below you will find an index of software programs that can be used to open TT15 files divided into 2 categories according to system platform supported. Files with TT15 suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Programs that support TT15 file

Windows Windows
MAC OS MAC OS

Updated: 10/21/2020

How to open file with TT15 extension?

Problems with accessing TT15 may be due to various reasons. What is important, all common issues related to files with TT15 extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. We have prepared a listing of which will help you resolve your problems with TT15 files.

Step 1. Get the TurboTax

Install software to open TT15 file Problems with opening and working with TT15 files are most probably having to do with no proper software compatible with TT15 files being present on your machine. The solution is straightforward, just download and install TurboTax. The full list of programs grouped by operating systems can be found above. The safest method of downloading TurboTax installed is by going to developer’s website (Intuit Inc.) and downloading the software using provided links.

Step 2. Update TurboTax to the latest version

Update software that support file extension TT15If the problems with opening TT15 files still occur even after installing TurboTax, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of TurboTax is available. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. This can be one of the causes why TT15 files are not compatible with TurboTax. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using TurboTax.

Step 3. Associate TurboTax 2015 Tax Return Format files with TurboTax

After installing TurboTax (the most recent version) make sure that it is set as the default application to open TT15 files. The method is quite simple and varies little across operating systems.

Associate software with TT15 file on Windows

Change the default application in Windows

  • Choose the Open with entry from the file menu accessed by right-mouse clicking on the TT15 file
  • Select Choose another app → More apps
  • To finalize the process, select Look for another app on this PC entry and using the file explorer select the TurboTax installation folder. Confirm by checking Always use this app to open TT15 files box and clicking OK button.
Associate software with TT15 file on Mac

Change the default application in Mac OS

  • By clicking right mouse button on the selected TT15 file open the file menu and choose Information
  • Open the Open with section by clicking its name
  • Select TurboTax and click Change for all...
  • A message window should appear informing that This change will be applied to all files with TT15 extension. By clicking Continue you confirm your selection.

Step 4. Check the TT15 for errors

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the TT15 file in question. Being unable to access the file can be related to various issues.

Check TT15 file for viruses
1. Verify that the TT15 in question is not infected with a computer virus

If the file is infected, the malware that resides in the TT15 file hinders attempts to open it. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. TT15 file is infected with malware? Follow the steps suggested by your antivirus software.

2. Ensure the file with TT15 extension is complete and error-free

If the TT15 file was sent to you by someone else, ask this person to resend the file to you. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. It could happen the the download process of file with TT15 extension was interrupted and the file data is defective. Download the file again from the same source.

3. Verify whether your account has administrative rights

Some files require elevated access rights to open them. Switch to an account that has required privileges and try opening the TurboTax 2015 Tax Return Format file again.

4. Make sure that the system has sufficient resources to run TurboTax

If the system is under havy load, it may not be able to handle the program that you use to open files with TT15 extension. In this case close the other applications.

5. Ensure that you have the latest drivers and system updates and patches installed

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with TurboTax 2015 Tax Return Format file. It is possible that one of the available system or driver updates may solve the problems with TT15 files affecting older versions of given software.

Do you want to help?

If you have additional information about the TT15 file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on TT15 file.

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