Filing Frequencies and Return Due Dates

  • Annually

    • Less than $120 tax a year
    • File one return for the calendar year
    • Return and payment due on or before January 31 following each calendar year

    Quarterly

    • More than $120 but less than $6,000 tax per year ($30 - $1,500 per quarter; $10 - $500 per month)
    • File a quarterly return for each calendar quarter
    • Return and payment due on or before the last day of the month following each calendar quarter

    Monthly

    • More than $6,000 but less than $60,000 tax per year ($500 - $5,000 per month)
    • File deposits for each of the first two months of the calendar quarter
      • Due on or before the 20th of the following month
    • No monthly deposit for the third month of the quarter
    • For the third month, file the quarterly return with the payment for the balance of tax due for that quarter.
      • Due on or before the last day of the month following each calendar quarter

    Semi-monthly (electronic payment required)

    • More than $60,000 tax a year (more than $5,000 per month; more than $2,500 semi-monthly)
    • Required to file deposits twice each month electronically
      • 1st deposit - for the period from the 1st through the 15th; due on or before the 25th of that month
      • 2nd deposit - 16th through the end of the month; due on or before the 10th day of the following month
      • A deposit is not required for the final (6th) semi-monthly period of each quarter
    • Also file the quarterly return
      • Return and last (6th) deposit of quarter - due on or before the last day of the month following each calendar quarter

    NOTE: the first semi-monthly deposit for the following quarter is due before the final (6th) deposit for the preceding quarter

  • Annually

    • Less than $120 tax a year
    • File one return for the calendar year
    • Return and payment due on or before January 31 following each calendar year

    Quarterly

    • Less than $1,500 tax a month
    • File a quarterly return for each calendar quarter
    • Return and payment due on or before the last day of the month following each calendar quarter

    Monthly

    • More than $1,500 tax a month
    • File deposits for each of the first two months of the calendar quarter
      • Due on or before the 20th of the following month
    • No monthly deposit for the third month of the quarter
    • For the third month, file the quarterly return with the payment for the balance of tax due for that quarter.
      • Due on or before the last day of the month following the calendar quarter
  • Annually

    • Less than $120 tax a year
    • File one return for the calendar year
    • Return and payment due on or before January 31 following each calendar year

    Quarterly

    • More than $120 tax a year
    • File a quarterly return for each calendar quarter
    • Return and payment due on or before the last day of the month following each calendar quarter
  • Quarterly

    • Less than $6,000 tax per year (less than $1,500 per quarter; less than $500 per month)
    • File a quarterly return for each calendar quarter
      • Return and payment due on or before the last day of the month following each calendar quarter
    • Also file the annual VSP reconciliation form
      • Due on or before February 15 of the following year

    Monthly

    • $6,000 - $120,000 tax per year ($500 - $10,000 per month)
    • File tax deposits for the first two months of each calendar quarter
      • Due on or before the 15th of the following month
    • No monthly deposit for the third month of the quarter
    • For the third month, file the quarterly return with the payment for the balance of tax due for that quarter
      • Due on or before the last day of the month following each calendar quarter
    • Also file the annual VSP reconciliation form
      • Due on or before February 15 of the following year

    Semi-monthly

    • More than $120,000 tax per year (more than $10,000 per month; more than $5,000 semi-monthly)
    • Required to file deposits twice each month electronically
      • 1st deposit - for the period from the 1st through the 15th; due on or before the 25th of that month
      • 2nd deposit - 16th through the end of the month; due on or before the 10th day of the following month
      • Must make a total of 6 semi-monthly deposits each quarter
      • The 6th payment is due on or before the 10th day of the month following the end of the quarter
      • All six payments should be made before filing the withholding quarterly return
    • Required to file quarterly return electronically
      • Due no later than the last day of the month following the end of the quarter
      • If the six deposits were made correctly, no balance due with the quarterly return
      • May make an additional payment with the quarterly return, if needed

    W-2s, W-2Gs, 1099s, & Verified Summary of Payments Report (VSP)

    • The annual Verified Summary of Payments Report (VSP) is due February 15 following the tax year.
    • Beginning in 2020 for tax year 2019 and all subsequent tax years, businesses that issued W-2s or 1099s that contain Iowa withholding must electronically file those documents by February 15. If businesses did not withhold any Iowa taxes, filing is not required.