Due Dates

Payroll Due Dates

Quarterly Payroll Tax Forms

The following forms must be filed each quarter. These forms are due on or before the last day of the month following the end of each quarter: March 31 (due April 30), June 30 (due July 31), September 30 (due October 31) or December 31 (due January 31).

If no wages or taxes were paid for a quarter, you are required to file each form with zeros.

  • 941, Employer’s Quarterly Federal Tax Return, must be filed to report to the Internal Revenue Service the total quarterly wages paid, total quarterly Federal withholding, Social Security and Medicare taxes (both the employee portion withheld from wages and employer matching portion) and total tax deposits made for the quarter.
  • DR 1094, Colorado Department of Revenue Income Withholding Tax Return, must be filed to pay Colorado taxes withheld from wages during the quarter or the month. The Colorado Department of Revenue will notify you if you are a monthly or a quarterly filer.
  • UITR-1, Unemployment Insurance Tax Report for Colorado Department of Labor and Employment, must be filed to report total Colorado wages paid for the quarter, detailed by employee name and Social Security number. Colorado unemployment tax is calculated on the first $12,500 of wages paid to each employee during the year, multiplied by the rate established annually for your company by the Colorado Department of Labor.

Annual Payroll Tax Forms

In addition to the quarterly forms listed above, the following annual forms must be filed at the end of the year.

  • Form 944, Employer’s Annual Federal Tax Return (due January 31). This form is designed for employers having an annual liability of $1,000 or less in Social Security, Medicare and withheld Federal income taxes. The Internal Revenue Service notifies employers if they are eligible to file Form 944.
  • Form 940, Employer’s Annual Federal Unemployment (FUTA) Tax Return (due January 31). This form reports total annual wages paid, total annual wages over $7,000 for each employee, and the resulting difference equal to the total taxable annual wages up to $7,000 for each employee, the tax at .008, and unemployment tax deposits made during the year.
  • Form W-2, Employee Wage and Tax Statement (must be provided to employees on or before January 31). This form is prepared for every employee to report name, address, Social Security number, total annual wage, annual taxable wage and all Federal and State taxes paid.
  • Form W-3, Transmittal of Wage and Tax Statements (due January 31).
  • Form DR 1093, Colorado Department of Revenue Transmittal of State W-2s (due January 31).
  • Tax Return Due Dates (for calendar tax years)
    • Individuals
      • File Form 1040 due April 15th
    • Partnerships
      • File Form 1065 due March 15th
    • S Corporations
    • File Form 1120S due March 15th
  • Corporations
    • File Form 1120 due April 15th/li>