To install TurboTax on multiple computers, ensure you have a valid license that allows installation on more than one device. Download the setup file from the official website. On each computer, go to www.installturbotax.com, sign in with your TurboTax account, and follow the installation instructions. Enter your license code when prompted. Repeat this process on each computer, making sure you stay within the allowed number of installations as per TurboTax’s terms. Always keep your login details secure.