What an employer files about its own payroll - separate from the information returns it files about payments to everyone else.
Employer's Annual Federal Unemployment Tax Return
The annual FUTA return. Federal unemployment tax is paid by the employer, never withheld from employees.
Employer's Quarterly Federal Tax Return
The quarterly return reporting federal income tax withheld plus Social Security and Medicare tax, for most employers.
Employer's Annual Tax Return for Agricultural Employees
The annual employment tax return for farm employers - the agricultural counterpart to Form 941.
Employer's Annual Federal Tax Return
The annual alternative to Form 941, for the smallest employers - and only when the IRS says so.
Annual Return of Withheld Federal Income Tax
Reports federal income tax withheld from payments that are not wages - pensions, gambling winnings, backup withholding.
Transmittal of Wage and Tax Statements
The summary that accompanies paper W-2s to the Social Security Administration. Not needed when filing electronically.
Each of these is a standalone return, not an amended version of the original, and one form covers one period.
Adjusted Employer's QUARTERLY Federal Tax Return or Claim for Refund
Corrects a Form 941 that has already been filed. A standalone return, not an amended 941.
Adjusted Employer's Annual Federal Tax Return for Agricultural Employees or Claim for Refund
Corrects a filed Form 943. The agricultural counterpart to Form 941-X.
Adjusted Employer's ANNUAL Federal Tax Return or Claim for Refund
Corrects a filed Form 944.
Adjusted Annual Return of Withheld Federal Income Tax or Claim for Refund
Corrects a filed Form 945 - non-payroll and backup withholding.