What is the T13 file format?
A file with the .T13 extension is a file known as H&R Block Tax Software Tax Return. It belongs to the Misc Files category. This format is associated with N/A.
The reliable way to open a .T13 file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
We are still gathering the list of programs that open .T13 files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
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