.QDF File Extension

Quicken Data file

QDF files are files stored in the proprietary Financial data format that is used by Quicken personal finance software for Windows. The QDF file will save all accounts, transactions, portfolios, and balance information from a Quicken data set. The QDF file is the primary data file saved by Quicken. Quicken may automatically create other related files may be recreated by Quicken as long as the QDF is valid.