A licensed distributor must report immediately to the Bureau of Taxation on losses sustained by him through fire, accident, or unavoidable calamity, in order that the Bureau nay make such investigations as it may deem necessary. In such a case, the distributor should not delay reporting such loss until the filing of his next monthly report. Failure to report such losses promptly may result in the refusal of the Bureau to allow credit on account of tax liability with respect to such losses.
18- 125 C.M.R. ch. 501, § 03