What happens when advocacy materials created for one purpose are later used for another? The “subsequent use rule” can affect how 501(c)(3) public charities track and report grassroots lobbying activities — especially when communications are repurposed over time. This fact sheet breaks down what the rule is, when it applies, and how organizations can stay compliant while continuing to engage effectively on the issues that matter most. Whether you’re developing new materials or reusing existing content, this resource offers clear guidance to help you navigate risk, maintain compliance, and strengthen your advocacy strategy.