Sec. 461.14. Spreading of income, revenue, and expense items

(a) Income, revenue, or expense items shall in all cases be entered in the accounts in the month in which they accrue and shall not be equalized by spreading over one or more months by the use of deferred debit, deferred credit, reserve or other accounts, except as otherwise specifically provided in this system of accounts or by order of the commission.

(b) When the amount of any unusual item includible in an income, operating revenue, or operating expense account for a single month is relatively so large that its inclusion in the accounts for that month would seriously distort those accounts, it may be included in account 146, other deferred debits, or account 242, other deferred credits, as appropriate, provided an order of the commission shall have been obtained permitting such procedure and determining the accounts to which it shall be distributed and the period of such distribution.