MO Rev Stat § 143.541 (2021)
2021 Missouri Revised Statutes|Title X - Taxation and Revenue|Chapter 143 - Income Tax|Section 143.541 - Payments of estimated tax.

Effective - 01 Jan 1973   143.541. Payments of estimated tax. — 1. The estimated tax with respect to which a declaration is required under sections 143.011 to 143.996 shall be paid as follows:  (1) If the declaration is filed on or before April fifteenth of the taxable year, the estimated tax shall be paid in four equal installments. The first installment shall be paid at the time of the filing of the declaration, the second and third on June fifteenth and September fifteenth, respectively, of the taxable year, and the fourth on January fifteenth of the succeeding taxable year.  (2) If the declaration is filed after April fifteenth and not after June fifteenth of the taxable year, and is not required to be filed on or before April fifteenth of the taxable year, the estimated tax shall be paid in three equal installments. The first installment shall be paid at the time of the filing of the declaration, the second on September fifteenth, of the taxable year, and the third on January fifteenth of the succeeding taxable year.  (3) If the declaration is filed after June fifteenth and not after September fifteenth of the taxable year, and is not required to be filed on or before June fifteenth of the taxable year, the estimated tax shall be paid in two equal installments. The first installment shall be paid at the time of the filing of the declaration, and the second on January fifteenth of the succeeding taxable year.  (4) If the declaration is filed after September fifteenth of the taxable year and is not required to be filed on or before September fifteenth of the taxable year, the estimated tax shall be paid in full at the time of the filing of the declaration.  (5) If the declaration is filed after the time prescribed in section 143.531 (including cases in which an extension of time for filing the declaration has been granted), subdivisions (2), (3), and (4) of this subsection shall not apply, and there shall be paid at the time of such filing all installments of estimated tax which would have been payable on or before such time if the declaration had been filed within the time prescribed in section 143.531, and the remaining installments shall be paid at the time at which and in the amounts in which they would have been payable if the declaration had been so filed.  (6) In applying subdivisions (1), (2), and (3) of this subsection to a corporation, installments indicated as being due on January fifteenth of the succeeding year shall be paid on or before December fifteenth of the taxable year.  2. If an individual referred to in subsection 2 of section 143.531 (relating to income from farming) makes a declaration of estimated tax after September fifteenth of the taxable year and on or before January fifteenth of the succeeding taxable year, the estimated tax shall be paid in full at the time of the filing of the declaration.  3. If any amendment of a declaration is filed, the remaining installments, if any, shall be ratably increased or decreased, as the case may be, to reflect the increase or decrease in the estimated tax by reason of such amendment, and if any amendment is made after September fifteenth of the taxable year, any increase in the estimated tax by reason thereof shall be paid at the time of making such amendment.  4. The application of this section to taxable years of less than twelve months shall be in accordance with regulations prescribed by the director of revenue.  5. In the application of this section, section 143.521 and section 143.531 to the case of a taxable year beginning on any date other than January first, there shall be substituted, for the months specified in this section, the months which correspond thereto.  6. At the election of the individual, any installment of the estimated tax may be paid prior to the date prescribed for its payment.  7. Payment of the estimated income tax, or any installment thereof, shall be considered payment on account of the income tax imposed under sections 143.011 to 143.996 for the taxable year. ­­-------- (L. 1972 S.B. 549)  Effective 1-1-73