AnkiDroid is a free, open-source flashcard app with over 10 million installs, built and maintained entirely by volunteers. Its only funding comes through Open Collective donations hosted by Open Source Collective, a US non-profit with IRS 501(c)(6) tax-exempt status. Google Play has decided this doesn't count, and is threatening to remove the app globally on September 11, 2026. The policy dispute turns on a distinction Google's support team appears unable to parse. Google's own payments policy exempts "tax exempt donations" from its mandatory billing system. Open Source Collective holds a valid IRS determination letter confirming 501(c)(6) status — which is, by definition, tax-exempt. Google's support team responded to the submitted determination letter by stating AnkiDroid "allows users to contribute donations to an organization that is not tax-exempt." This is factually wrong. 501(c)(6) organizations are tax-exempt; donations to them are simply not tax-deductible for the donor. These are different things. Google's own communications use the phrase "tax-exempt" but its example — "a validated 501(c)(3) charitable organization" — appears to have become the only category its reviewers recognize. The parenthetical example has swallowed the rule. This is not a policy dispute; it is a reading comprehension failure inside Google's enforcement apparatus, one that no amount of documentation or appeals has been able to correct across six weeks of back-and-forth. The timeline reveals the mechanical brutality of the process. The initial notice arrived on July 20 in Japanese. AnkiDroid's maintainer immediately requested and obtained the IRS determination letter from Open Source Collective, which was provided to Google on July 21. Google rejected it on August 7. By August 28, Google was rejecting app updates entirely. The deadline for full removal is September 11. At no point has Google explained why a 501(c)(6) determination is insufficient when its own policy says "tax-exempt." AnkiDroid's team is now forced to strip all donation links from the Play Store build under protest — removing the sole funding mechanism for an app used by millions of medical students and language learners worldwide. The app will survive on F-Droid and direct APK distribution, but the Play Store is where the overwhelming majority of its users live. Removing the donation link doesn't just comply with an erroneous policy decision; it severs the financial lifeline for volunteer-maintained infrastructure. The structural problem extends well beyond AnkiDroid. Any open-source project using a 501(c)(6) fiscal host — and Open Source Collective hosts hundreds — is now potentially exposed to the same enforcement action. Google's policy review process offers no escalation path that can override a support team's misreading of tax law. The only remedy AnkiDroid can identify is finding someone inside Google who can manually intervene, which is not a policy — it's a favor. This is what platform monopoly looks like at the operational level: not a dramatic antitrust showdown, but a mid-level support team's inability to distinguish between two IRS categories, backed by the unilateral power to remove software used by ten million people. The cost falls entirely on unpaid volunteers and their users. Google bears no cost for being wrong.
