The Colorado 104PN form serves as an essential tool for individuals who were either part-year residents or full-year nonresidents of Colorado during the tax year. This form is particularly relevant for taxpayers who may have earned income in Colorado while residing in another state for part of the year, ensuring that they are taxed fairly based on their actual Colorado income. To accurately complete the 104PN, taxpayers must first fill out the relevant sections of Form 104, detailing their total income. The 104PN then apportions this income, allowing for a reduction in the tax calculated from the total income to reflect only the income earned while residing in or working in Colorado. Specific sections of the form require taxpayers to report various types of income, such as wages, interest, dividends, and business income, with additional distinctions made for income earned during periods of Colorado residency. Furthermore, the form includes provisions for federal adjustments and subtractions, ensuring that taxpayers can account for any applicable deductions. By following the instructions carefully, individuals can determine their apportioned tax liability, which is crucial for compliance with Colorado tax laws.