BTD is a file format used by Business-in-a-Box, a modern business management application. Application contains ca. 1500 various business document templates; used by managers. Templates are available in English, French, Spanish, and Chinese. Users can select among such documents as agreements, protocols, acts, letters, etc.

BTD file is generated using a template and saved by Business-in-a-Box (DOC or RTF formats are also supported).