The Colorado DR 0106EP form is an essential tool for nonresident individuals who need to make estimated tax payments for the year. Designed specifically for those included in a composite filing, this worksheet assists users in calculating their estimated Colorado taxable income and the corresponding income tax owed. The form outlines a straightforward process, beginning with the estimation of taxable income and tax liability, followed by the application of any applicable credits. Taxpayers must also be aware of the required payment schedule, which consists of four quarterly payments due on specific dates throughout the year. The form emphasizes the importance of timely submissions to avoid penalties, while also providing guidance on payment methods, including electronic funds transfer options. Additionally, it clarifies that estimated payments cannot be refunded until the corresponding income tax return is filed, underscoring the need for careful record-keeping. Overall, the DR 0106EP form serves as a comprehensive guide for nonresidents navigating their tax obligations in Colorado.