Comment on IRS policy denies tax-exempt status to open source non-profitsparentComments−DougBTX12yHere's Wikimedia's confirmation of exemption letter.https://upload.wikimedia.org/wikipedia/foundation/9/90/501%2...To go further, I'd look up exactly what "Public Charity Status 170(b)(1)(A)(vi)" is, and then compare that to how they describe themselves here: https://wikimediafoundation.org/wiki/FAQ/en
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Here's Wikimedia's confirmation of exemption letter.
https://upload.wikimedia.org/wikipedia/foundation/9/90/501%2...
To go further, I'd look up exactly what "Public Charity Status 170(b)(1)(A)(vi)" is, and then compare that to how they describe themselves here: https://wikimediafoundation.org/wiki/FAQ/en