Technical Notes

Employer Withholding

Form MO-941 - Withholding Return for Monthly, Quarterly, or Annual Filers

You will need the following information to complete this transaction:

  • Missouri Tax Identification Number
  • File Period (Tax Year + Tax Month)
  • Withholding Due (Line 1 of MO-941)
  • Compensation Deduction (Line 2 of MO-941)
  • Amount Due (Withholding Due minus Compensation Deduction – math must be correct)
  • Credit Card or Bank Account Information (E-Check)

Form MO-941 - Monthly Reconciliation for Quarter-Monthly (Weekly) Filers

You will need the following information to complete this transaction:

  • Missouri Tax Identification Number
  • Quarter-Monthly File Period (Tax Year + Tax Month)
  • Withholding Due (Line 1 of MO-941)
  • Compensation Deduction (Line 2 of MO-941)
  • Amount paid for the Tax Period – Withholding Due minus Compensation Deduction (math must be correct)

Quarter-Monthly (Weekly) Payments

You will need the following information to complete this transaction:

  • Missouri Tax Identification Number
  • Quarter-Monthly File Period (Tax Year + Tax Month)
  • Amount Due for Quarter-Monthly Installment
  • Credit Card or Bank Account Information (E-Check)

Billing Notices (4648, 4649, 4651, 4653, 4655)

You will need the following information to complete this transaction:

  • Missouri Tax Identification Number
  • File Period (Tax Year + Tax Month)
  • Amount Due for File Period
  • Credit Card or Bank Account Information (E-Check)

Corporate Tax

Form MO-1120ES - Declaration of Estimated Tax

You will need the following information to complete this transaction:

  • Missouri Tax Identification Number
  • File Period (Tax Year)
  • Amount Due for Estimated Payment
  • Credit Card or Bank Account Information (E-Check)

Form MO-1120 or MO-1120S - Return Payment

You will need the following information to complete this transaction:

  • Missouri Tax Identification Number
  • File Period (Tax Year)
  • mount Due for Return
  • Credit Card or Bank Account Information (E-Check)

Billing Notices (4501, 4503, 4504, 4505, 5003, or others)

You will need the following information to complete this transaction:

  • Missouri Tax Identification Number
  • Notice number (11-digit number located on notice)
  • File Period (Tax Year)
  • Amount Due for Notice
  • Credit Card or Bank Account Information (E-Check)

Sales/Use Tax

Quarter-Monthly (Weekly) Payments

You will need the following information to complete this transaction:

  • Missouri Tax Identification Number
  • Quarter Monthly File Period (Tax Year + Tax Month + Tax Week)
  • Amount Due for Quarter-Monthly Installment
  • Credit Card or Bank Account Information (E-Check)

Monthly, Quarterly, or Annual Payments

You will need the following information to complete this transaction:

  • Missouri Tax Identification Number
  • File Period (Tax Year + Tax Month)
  • Amount Due for File Period
  • Credit Card or Bank Account Information (E-Check)

Billing Notices (C401, C402, C403, C411, C412, P208, P218, P220, 8251)

You will need the following information to complete this transaction:

  • Missouri Tax Identification Number
  • File Period (Tax Year + Tax Month)
  • Notice Number (15-digit number printed on notice)
  • Amount Due
  • Credit Card or Bank Account Information (E-Check)

Other Tax Types

Form 5068 - Tire/Lead-Acid Battery Fee Return Payment

You will need the following information to complete this transaction:

  • Missouri Tax Identification Number
  • File Period (Tax Year + Tax Month)
  • Number of Tires Sold
  • Tires Adjusted +/- (if any)
  • Number of Batteries Sold
  • Batteries Adjusted +/- (if any)
  • Credit Card or Bank Account Information (E-Check)

Motor Fuel Tax Payments

You will need the following information to pay online:

  • Missouri Tax Identification Number
    • Unregistered individuals – To make motor fuel tax payments, use the following as your license number: Enter the letter F and the last four digits of your Social Security Number.
    • Unregistered businesses – To make motor fuel tax payments, use the following as your license number: Enter the letter F and the last four digits of your FEIN.
  • File Period (Tax Year + Tax Month)
  • Amount Due
  • Credit Card or Bank Account Information (E-Check)

Cigarette/Tobacco Tax Payments

You will need the following information to pay online:

  • Missouri Tax Identification Number
    • Unregistered individuals – To make cigarette or tobacco tax payments, use the last four digits of your Social Security Number as your license number.
    • Unregistered businesses – To make cigarette or tobacco tax payments, use the last four digits of your FEIN as your license number.
  • File Period (Tax Year + Tax Month)
  • Amount Due
  • Credit Card or Bank Account Information (E-Check)