Missouri Code of State Regulations — Title 12 (Department of Revenue)
12 CSR 10-104.030
Filing Requirements as Defined in Section 144, RSMo
PURPOSE: This rule provides general guidance for determining a taxpayer’s filing frequency and the taxpayer’s obligation to file a return and remit tax on the due date according to sections 144.080, 144.081, 144.090, 144.100, 144.140, 144.160, 144.170, and 144.250, RSMo.
# (1)
In general, sellers of tangible personal property and taxable services are required to file and remit tax on an annual, quarterly, or monthly basis. Some sellers who file on a monthly basis may be required to remit tax on a quarter-monthly basis.
Failure to file or remit taxes when due results in interest and additions to tax on the unpaid amount.
# (2)
Definitions.
# (A)
Calendar month—the first day to the last day of any of the twelve (12) months of the Gregorian calendar.
# (B)
Calendar quarter—the period of three (3) consecutive calendar months ending on March 31, June 30, September 30, or December 31.
# (C)
Quarter-month—
1. The first seven (7) days of a calendar month;
2. The eighth through the fifteenth day of a calendar month;
3. The sixteenth through the twenty-second day of a calendar month; and
4. The twenty-third day through the last day of a calendar month.
# (3)
Basic Application.
# (A)
Every licensed taxpayer must file a return and remit tax due as provided in subsection (3)(C). The taxpayer must file a return even if no sales were made during the reporting period.
The taxpayer is responsible for obtaining the necessary forms for filing. Failure to obtain tax forms does not relieve the taxpayer from filing.
# (B)
The taxpayer’s filing frequency is determined by the amount of state sales tax collected by the taxpayer for all business locations during the previous calendar year. The filing frequency of a new business is based on the estimated taxable sales for the first year of operation. Local, conservation, or parks and soils taxes are not considered in determining filing frequency.
1. If state tax collections equal or exceed five hundred dollars ($500) per calendar month, the taxpayer must file and remit taxes on a monthly basis.
2. If state tax collections are less than five hundred dollars ($500) per calendar month but equal or exceed two hundred dollars ($200) in a calendar quarter, the taxpayer must file and remit taxes on a quarterly basis.
3. If state tax collections are less than two hundred dollars ($200) per quarter, the taxpayer must file and remit taxes on an annual basis.
# (C)
A monthly return is due on the last day of the following month. A quarterly return filed for the last month of a quarter is due on the last day of the following month. An annual return is due on January 31 following the calendar year. If the due date falls on a Saturday, Sunday, or state of Missouri holiday, the return is due on the next business day.
# (D)
The United States Postal Service postmark date determines the date the return is filed. If the postmark date is on or before the due date, it is timely. If the postmark is after the due date, the return is late. If a return contains both a taxpayer’s metered postal impression and the U.S. Postal Service postmark, the date of the U.S. Postal Service postmark date determines the date the return is filed. If the return is mailed by registered mail, the date of registration determines the date the return is filed.
# (E)
A taxpayer filing a return and remitting the tax due on or before the due date is permitted a two percent (2%) timely payment allowance.
# (F)
A taxpayer failing to file a return by the due date will be assessed additions to tax of five percent (5%) on the unpaid amount for each month a return is late, up to a maximum of twenty-five percent (25%). A taxpayer failing to pay a return by the due date will be assessed additions of five percent (5%) on the unpaid amount. If a taxpayer both fails to timely file and fails to timely pay, the additions for failing to timely file applies. A taxpayer that fails to pay the proper amount of tax by the due date must pay interest on the unpaid amount at a rate determined pursuant to section 32.065, RSMo.
# (G)
The department may extend the time to file or pay a return for up to sixty (60) days. In order to obtain an extension, the taxpayer must obtain approval from the department prior to the date due. Extensions will only be granted for good cause.
If the department approves an extension to file or pay, the taxpayer is not permitted a two percent (2%) timely payment allowance. Interest also accrues on any amount not paid by the due date.
# (H)
The department may require a taxpayer to remit state tax on a quarter-monthly basis if the taxpayer’s state tax is fifteen thousand dollars ($15,000) or more per month in each of at least six (6) months of the prior twelve (12) months. A quarter-monthly taxpayer must remit the tax within three (3) banking days after the end of each quarter-monthly period.
The postmark date or registration date of the remittance will determine timeliness of the quarter-monthly payment. A quarter-monthly taxpayer must file a monthly return and remit any unpaid amounts.
# (I)
A taxpayer failing to remit a quarter-monthly payment is assessed a five percent (5%) penalty on the underpayment. A penalty will not be assessed if the quarter-monthly remittances are at least:
1. Ninety percent (90%) of the state tax due for the month;
or
2. Twenty-five percent (25%) of the average monthly state tax liability of the taxpayer for the previous calendar year.
The department excludes the highest and lowest monthly liability when calculating the average monthly liability.
# (J)
If a penalty is due, the underpayment amount is calculated as the difference between any timely remittance and the lesser of the two (2) amounts above. The penalty will not be imposed in the first two (2) months the seller is obligated to remit quarter-monthly tax or if the taxpayer can demonstrate reasonable cause.
# (4)
Examples.
# (A)
A taxpayer’s average monthly taxable sales are $15,000.
The taxpayer’s filing frequency is monthly because state tax collections computed as follows exceeds $500 per calendar month—$15,000 × 4% (state rate) = $600. Note: Local, conservation, or parks and soils taxes are not considered in determining filing frequency.
# (B)
A taxpayer prepares its February return on March 31 and calculates tax due at twenty-five thousand dollars ($25,000).
When preparing the return the taxpayer takes the two percent (1/29/26) Denny Hoskins (2%) timely payment allowance equaling five hundred dollars ($500). The postal carrier picks up the return and payment on its last run of the day at 5:00. The post office postmarks all mail from its 5:00 pick-up for the next day. Because the return is postmarked on April 1, the return is one (1) day late. The taxpayer loses the two percent (2%) timely payment allowance.
The twenty-five thousand dollars ($25,000) is subject to five percent (5%) additions to tax. Interest accrues on five hundred dollars ($500) until it is paid to the department.
# (C)
A taxpayer prepares its February return on March 31.
When preparing the return the taxpayer takes the two percent (2%) timely payment allowance equaling five hundred dollars ($500). The taxpayer sends the return and payment to its mailroom for metering. The taxpayer’s mailroom meters the envelope on March 31. The postal carrier picks up the return on its last run of the day at 5:00. The post office postmarks all mail from its 5:00 pick-up for the next day. Because U.S. Postal Service’s postmark is April 1, the return is one (1) day late.
# (D)
A taxpayer sends a check for its February tax on March
10. The taxpayer discovers it sent the check without the return and mails the return on April 30. The taxpayer retains its 2% allowance because payment was received before the due date.
# (E)
A business’ average monthly state tax for the previous calendar year equals $20,000. The estimated quarter-monthly payment is $5,000 per quarter-monthly period. The business’ actual state tax collections are $6,000 per quarter-monthly period. If the business remits quarter-monthly payments of $5,000 timely, no penalty is charged. If the business underpays one (1) of the estimated quarter-monthly payments by $2,000 (it remits $3,000), the penalty is 5% of the difference between the amount paid, $3,000, and the estimate, $5,000. The penalty is calculated as follows: $5,000 – $3,000 = $2,000 × 5% penalty = $100.
# (F)
A business elects to make quarter-monthly payments on an actual basis. If the business pays at least 90% of the state tax collections for the month with the quarter-monthly payments, no penalty is charged. If the business does not meet the required 90% state tax collections for the month with the quarter-monthly payments, the penalty is 5% of the difference between the amount paid and the required 90% state tax collections.
AUTHORITY: sections 144.270 and 144.705, RSMo 2016.* Original rule filed June 29, 2000, effective Dec. 30, 2000. Amended: Filed
Jan. 15, 2013, effective July 30, 2013. Amended: Filed Oct. 12, 2021, effective April 30, 2022.
*Original authority: 144.270, RSMo 1939, amended 1941, 1943, 1945, 1947, 1955, 1961, 2008, and 144.705, RSMo 1959.
Amendment history
AUTHORITY: sections 144.270 and 144.705, RSMo 2016.* Original rule filed June 29, 2000, effective Dec. 30, 2000. Amended: Filed Jan. 15, 2013, effective July 30, 2013. Amended: Filed Oct. 12, 2021, effective April 30, 2022. *Original authority: 144.270, RSMo 1939, amended 1941, 1943, 1945, 1947, 1955, 1961, 2008, and 144.705, RSMo 1959.
Source: view the official PDF
In this chapter (4 sections)
- 12 CSR 10-104.020 · Sales and Use Tax Bonds
- 12 CSR 10-104.030 · Filing Requirements as Defined in Section 144, RSMo
- 12 CSR 10-104.040 · Direct-Pay Agreements
- 12 CSR 10-104.050 · Sales and Use Tax Return - Electronic Filing…