Create a Preauth Transaction

How to create and complete a preauth transaction within Tap on Phone.


Preath transactions allow payment to be pre-authorised and collected using Tap on Phone.

If you wish to activate preAuth functionality in your terminals, please contact your Viva sales representative. Alternatively, you can contact us directly via our live chat facility, by simply clicking on the live chat icon in the bottom right-hand corner of this page.


  1. Select the dropdown menu at the top of the main screen:


  2. Choose the ‘Preauth’ option:


  3. You can then enter the payment amount, press the ‘Preauthorise’ button and take the customer’s payment as normal:


  4. Lastly, you can choose to print or share a receipt once payment is complete, or simply return to the main screen:


Get Support

If you would like to integrate with Viva, or if you have any queries about our products and solutions, please see our Contact & Support page to see how we can help!