1.
Paytm Business Model is a marketplace model which also deals
in recharge & bill payments and provide users with the e-wallet and
banking option. Paytm, though started as a recharge service provider in
2000, has changed its business model to 'a marketplace and a virtual
bank' model. It is also one of the pioneers of cashback business model.

2.
Paytm wallet is the most important source of income for Paytm.
Learn how Paytm Wallet works and how paytm makes money through wallet
on
http://www.feedough.com/paytm-business-model-how-paytm-makes-money
(paytm also has plans to start its own digital bank)