WindowsWhat is the H12 file format?
A file with the .H12 extension is a file known as At Home 2012 tax return. It belongs to the Data Files category. This format is associated with H&R Block Canada.
The reliable way to open a .H12 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.
This page lists 4 programs that open .H12 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
in a nutshellPrograms that open H12 files
Mac OS1 app
Web1 app
Community Q&A
asked by usersNo questions yet - be the first to ask about H12 files.
