In Rev. Proc. 2010-39, 2010-42 I.R.B. 459, the Internal Revenue Service requested public comment on the continuing need for the high-low method for substantiating, under § 274(d) of the Internal Revenue Code, lodging, meal, and incidental expenses incurred in traveling away from home. The Service received no comments.
Accordingly, the Service intends to discontinue authorizing the high-low substantiation method. In 2011, the Service plans to publish a revenue procedure providing the general rules and procedures for substantiating lodging, meal, and incidental expenses incurred in traveling away from home (omitting the high-low substantiation method). The Service will publish a revenue procedure in subsequent years only when modifying the substantiation rules and procedures and will publish the special transportation rate in an annual notice.
Announcement 2011-42

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