2021 Federal Tax Table - Admin > Payroll Tax Tables > Federal
Head of Household Tab
Federal Unemployment tax is generally .6% on the first $7,000. However, employers in credit reduction states are subject to a higher rate. Check with your accountant to determine your rate. 401K limits pertain to payroll deductions where “Section 401K Deduction (non-Roth)” is checked.
2021 Illinois State Tax Table - Admin > Payroll > Tax Table > State/Local
Publication 15 (Circular E), Employer's Tax Guide for use in 2021 is posted to the IRS website.