Tally backup to Manager.io

I have a business in tally. How do I create a new business and import all the data in Manager IO. Is there any convertor available online that an help me import the data?

Probably not. Every accounting program has its unique database structure. You would need a custom program to convert one to the other. When migrating to Manager from another accounting system, you don’t bring over all historical data. You set starting balances. See this Guide: Manager Cloud.

There are a couple programs on the market that advertise you can import data from others. Generally, that means data from another product of the specific developer. None are reported to work well.