One suggestion has been to normalize the fixed non-manufacturing cost based on expected sales. The issue with this strategy is that future sales are unclear, and consequently, an extraordinary deal of subjectivity is involved.
Another approach is to charge as one-period costs that are incomprehensible to designate for any one period. Under this approach, the detailed results for a quarter will reflect only fixed costs and commitment to profits, which is basically a commitment edge approach.
To mitigate the issue of regularity, the profession recommends that companies subject to material seasonal varieties highlight the regular nature of their business and with data for the 12-month period ending on interim dates for the current and preceding years. Consider supplementing your annual report.