If due date for filing declaration is: | Then due dates of equal installments are: |
(1) April 15 | April 15; June 15; September 15; January 15 of following year. |
(2) June 15 | June 15; September 15; January 15 of following year. |
(3) September 15 | September 15; and January 15 of following year. |
(4) January 15 of following year | All to be paid with the declaration. |
R.I. Gen. Laws § 44-30-56