@fb420 That website is not a official government website, nor a website that should be used for any tax information.
The $2,500 minimum income is required by the IRS when using Schedule 8812 to calculate the child tax credit for tax year 2023.
Go to this IRS website for both the Schedule 8812 and the Instructions with have the Worksheets - https://www.irs.gov/forms-pubs/about-schedule-8812-form-1040
