What Form 941 is and who files it
irs.gov says employers use Form 941 to report the federal income, social security and Medicare taxes withheld from employees' pay, and to report the employer's share of social security and Medicare taxes. The instructions say that if you pay wages subject to federal income tax withholding or social security and Medicare taxes, you must file Form 941 quarterly. Exceptions listed there include employers told to file Form 944 annually, seasonal employers for quarters with no wages, and employers of farm employees (who file Form 943). Check the instructions for your case.