Commons:Paid contribution disclosure policy
This page is considered an official policy on Wikimedia Commons.
It has wide acceptance among editors and is considered a standard that everyone must follow. Except for minor edits (such as fixing typos or bringing up-to-date information), please use of the discussion page to propose changes to this policy.
This means disclosure for paid editing on Commons is not required, but editing without disclosure of payment remains not allowed on any project that hasn't adopted an alternative policy. As of February 2019, only Commons, Wikispecies, Mediawiki and Wikibooks in Russian have adopted an alternative more relaxed policy. The alternative policies on Wikipedia in French and Italian require disclosure of payment.
See also this related essay: Guidance for paid editors