It may become easier following enactment of the Plain Writing Act of 2010. Signed into law on October 13, 2010, it requires the IRS to translate its documents into “plain writing” within 1 year. Plain writing means language that is clear, concise, well organized, and follows other best practices appropriate to the subject.
Source: H.R. 946
A rate for a period of less than a year computed as though for a full year.