The timing for addressing the terms of APAs impacted by COVID-19 is important. Where material changes in economic conditions lead to the breach of one or more of the critical assumptions, taxpayers should notify the relevant tax administrations as soon as practicable after the change occurs, or the taxpayer becomes aware of the change. Early notification is encouraged in order to give the affected parties more time to try to reach agreement on revising the APA, thereby reducing the likelihood of cancellation ...