SPAN Enterprises: E-file 940 and 941 Forms With ExpressEfile before February 1, 2021 ROCK HILL, SC / ACCESSWIRE / January 11, 2021 / As the 2020 tax year comes to a close, employers are required to report to the IRS by filing Form 940 and Form 941 by February 1, 2021. IRS Form 940 is used to compute and report unemployment taxes each year. The Employer's Quarterly Federal Tax Return, Form 941, allows employers to report withholdings from employee paychecks for income taxes, Social Security, and Medicare. Form 941 has undergone a series of revisions to reflect COVID-19 tax relief, with sections for reporting related to the CARES Act, the FFCRA, and deferment decisions for the employee portion of Social Security taxes.