# Cover donation fee Add the tag `Admin Cover Fee` to any donation\_v2 page, to add the checkbox "I would like to cover the payment processing fee" to the bottom of your donation form. This will then calculate your payment processing fees and add it to the donation value that your supporter has selected. Note that the processing fees are calculated at the rate of 2.9% + 30c\* See this in action at ![](/files/lhseJoXJJqB1CNdicNc1) ![](/files/37qf51cl5gfWzM9qYQte) \* or .3 of whatever unit of currency your site is using --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.codenation.com/campana/admin-tag-customisations/cover-donation-fee.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.