By default, Tally 7.2 stores data in: C:\Tally72\Data
Before diving into the "how," let’s look at the "why." Tally 7.2 saves data in .900 , .800 , and .DAT files inside folders like \TALLY\DATA . By default, this data lives only on your local hard disk. Here is what Google Drive adds: tally 7.2 google drive