The Hopkinson rate is the most common method of pricing electricity for industrial use. It consists of an "energy charge" for total kilowatt hour consumption plus an additional "demand charge" based on the maximum usage by the plan during any quarter-hour period during the month. Despite this...

The Internal Revenue Service has been attempting to reduce tax evasion on tips paid in cash by imputing this income on the basis of credit card tip income. This note points out that the effective marginal tax rate on a credit card tip can as a result be very high, possibly in excess of 100%....