R.I. Gen. Laws § 28-43-7.1

For the purpose of determining each employer’s experience rate for the next succeeding calendar year, the director shall not later than October 31 of each year determine each employer’s total taxable wages paid during the twelve-month (12) period ended on June 30, next preceding. If it is found that any employer has not reported the employer’s taxable wages for any quarter pertinent to that determination, the total amount of taxable wages for that quarter shall be estimated by the director according to prescribed regulations.