To activate your TurboTax activation code, begin by visiting www.installturbotax.com with license code. Download the TurboTax software compatible with your system. During installation, you'll be prompted to enter your 16-character activation code, usually found on your purchase receipt or inside the product box. Carefully type the code without spaces and click “Continue.” Follow the on-screen instructions to complete the installation and activate the software. If prompted, sign in or create a TurboTax account to link your license. This process ensures your TurboTax is properly registered, allowing you to start preparing your tax return securely and with full access to all features.