## Zoho Billing - Product, solutions, integrations, support, and resources Index Access the complete documentation index at: https://www.zoho.com/in/billing/llms.txt Use this file to discover all available documentation pages before proceeding. [Back](./) # Is it legal to charge my customers without asking for OTP? How does this system work? Recurring payments will be performed only with your customers’ consent. So, it is legal. To understand the basic flow of how this system works, have a look at the Razorpay’s [blog](https://razorpay.com/blog/introducing-recurring-payments-in-india/).