Tax990 Knowledge Base Have questions? We've got you covered! Get Answers Support Getting Started Tax990 Do we support the RRF-1 Annual Registration form? Currently, we do not support the RRF-1 Annual Registration form in Tax990. Was this helpful? Yes No Related Questions What are the additional forms that Tax990 supports for Form 990-T? Which sections can I upload in bulk when filing Form 990 with Tax990? Does your software support state filing? What forms does Tax990 support? Go to Home Page Need more help? Get in touch with our dedicated support team Contact Us (704) 839-2321 [email protected]