## Zoho Invoice — Product, features, payments, integrations, solutions, and help Index Access the complete documentation index at: https://www.zoho.com/ae/invoice/llms.txt Use this file to discover all available documentation pages before proceeding. [Back](./) # What is the difference between recurring invoice and auto charge? If you’re charging your customers on a regular basis for the same set of products or services you offer, you can simplify the process by converting the invoice into a recurring invoice. This will allow you to automatically generate invoices at periodic interval. However, auto charge is a feature of recurring invoices where you can automatically charge your customer’s credit card or debit money from their bank accounts via ACH payments whenever a recurring invoice in generated. To convert an invoice into a recurring invoice: * Go to the **Invoices** tab and select the invoice which you wish to convert into a recurring invoice. * Click on the **More** drop-down and select the **Make Recurring** option. * Set the interval at which the invoice should recur and click **Save.** To enable the auto-charge feature: * Click on the **Gear** icon on the top right corner and navigate to **Preferences -> Recurring Invoice** and check **Create, Charge and Send Invoices**. Click **Save**. * You need to integrate with a payment gateway that supports the ‘Auto-Charge’ feature. * Once you have completed the steps mentioned above, navigate to the Contacts module, select a contact and click on **Add New Card** from the **More** drop-down. * Enter the credit card details and click on **Save**. The contact’s credit card details will now be saved for payment against recurring invoices.