Paytm on Wednesday launched an all-in-one QR for businesses across India on its 'Paytm for Business' app. This QR will enable all merchants to accept unlimited payments through Paytm Wallet, Rupay Cards and all UPI based payment apps directly into their bank account at 0% fee. The application already has 10 million merchant users, Paytm Founder Vijay Shekhar Sharma said.