There is no definitive answer to this question, as the amount of federal tax that is owed on a 1099 NEC will vary depending on a number of factors, including the individual's tax bracket and the amount of income earned from the 1099 NEC. However, the Internal Revenue Service (IRS) provides a tax calculator tool on its website that can be used to estimate the amount of federal tax that may be owed on a 1099 NEC.