All contributions that support the cause ‘Wikipedia’ are donated to the Wikimedia Foundation. They are a 501(c)3 registered non-profit based in California. Here are their details:

• Name: Wikimedia Foundation
• Website: https://wikimediafoundation.org/
• EIN: 20-0049703
• Location: San Francisco, CA, USA
• Annual Revenue: $158,987,065
• Impact: $1.99 supports one Wikipedia (EN) article for 1 year
• 990(k) - Financial Filing: https://foundation.wikimedia.org/wiki/File:Wikimedia_Foundation_2020_Form_990.pdf
• Annual Report: https://meta.wikimedia.org/wiki/Wikimedia_Foundation_Medium-term_plan_2019/Annual_Plan_2021-2022
• Charity Navigator Profile: https://www.charitynavigator.org/ein/200049703

We calculated Wikipedia’s impact by dividing the total cost of running Wikipedia (based on 990(k) filing) by the number of articles on Wikipedia at the end of 2021 (as illustrated here). This comes to:

$111,669,959/56,114,363 articles = $1.99/article per year

Similarly, using the data here, we have found that there are on average:

• 19.5 edits per article: supporting the accuracy of information
• 1,585 views per article: supporting free access to knowledge for all