No, you’ll never be invoiced for more than the monthly budget you set for a Rate Connect pay-per-click campaign, and you’ll only pay for travelers’ clicks on your website rates during the calendar month.
In case your monthly budget is about to run out (or has run out), we’ll let you know by email (and with an in-product notification), so that you can adjust it to make sure your website rates continue to appear in search results.
To stay on top of the status of your budget and see how long it’ll keep your rates visible on trivago, you can always refer to the Budget page in Rate Connect.