Advancement of public utility not charitable when commercial activity yields consideration; operational exception applies if receipts are de minimis.

Advancement of an object of general public utility is not a charitable purpose if it involves trade, commerce or business activities, or services related thereto, rendered for a fee or other consideration. This exclusion does not apply if the activity is undertaken in the course of actually carrying out the public utility object and the aggregate receipts from such activity in the previous year do not exceed 20% of the trust's total receipts for that year.

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