There is no delete button. If not successful, it will be on the internet permanently as a failed fund raising effort, so I recommend keeping your donation amount low. We received a private donor shortly after we put our Kickstarter site and did not pursue or advertise Kickstarter because we no longer needed to raise funds, but we could not delete the Kickstarter page. Now it is a permanent search engine find when Googling our name showing that we only raised $1 for our Kickstarter Fund Raiser effort. That $1 was from a solicitor wanting services. I would not recommend the site.