Query Abt How to invest

In old videos with Finance with sharan, Video on Credit Cards Aly is saying use Cashback as Investment. How does that work? Say example, i Have spent 3k from my credit card and say1.5k is casback. Now this cashback debits to creditcard right, then now again should i debit this 1.5k and invest it or how does that work…I am unable to understand.

Stop watching Sharan Video and start reading Varsity

who is sharan?

If you buy something worth ₹30K on credit, you receive a ₹1.5K cashback on your bill, effectively paying ₹28.5K. The idea is to invest the ₹1.5K from your own cash into funds to generate returns.