Final answer:
Without current tax brackets and Kali's deductions, an accurate calculation of her federal withholding cannot be provided. One should use the IRS's resources to determine the withholding amount based on the most up-to-date information.
Step-by-step explanation:
To calculate the federal withholding for Kali, who earns an annual salary of $45,800, we would need to know the current year's tax brackets and her deductions or use the IRS withholding calculator or tax tables. Since these details are not provided, it's not possible to give an accurate answer without making assumptions. Therefore, I'm unable to provide the federal withholding amount for Kali. However, if you are looking for assistance in calculating federal withholding, you can refer to the IRS Publication 15-T for the tax tables and worksheets that can guide you through the process.