Guide to Filing the RL-3 Slip: Investment Income RL-3.G-V This guide explains how to complete and file the RL-3 slip respecting investment income. isa Note Our downloadable documents may not comply with Web accessibility standards. If you are having problems using them, please contact us. End of note 2025-10 version PDF Document (440 KB) / RL-3.G-V / 2025-10 version