Welcome to QuickBooks Community. Let me share some details about importing data.
We can import the following data into QuickBooks Online:
You can use a CSV, Google Sheets, or Excel files. In regards to journal entries and other data from Tally, it's best to reach out to their support so they can assist you further on how they can integrate to QuickBooks Online.
Please check this link: Common questions about importing data to QuickBooks Online. This will answer the commonly asked questions on how to bring in data from other sources.
You may also visit the Apps tab. From there, you can see all the supported third-party applications you can use including file importers.
Need more help? Just leave a comment below.