SECTION 4. PER DIEM

SUBSTANTIATION METHOD

.01 Per diem allowance . If a payor pays a per diem allowance in lieu of reimbursing actual lodging, meal, and incidental expenses incurred or to be incurred by an employee for travel away from home, the amount of the expenses that is deemed substantiated for each calendar day is equal to the lesser of the per diem allowance for that day or the amount computed at the federal per diem rate (see section 3.02 of this revenue procedure) for the locality of

travel for that day (or partial day, see section 6.04 of this revenue procedure).

.02 Meal and incidental expenses only per diem allowance . If a payor pays a per diem allowance only for meal and incidental expenses in lieu of reimbursing actual meals and incidental expenses incurred or to be incurred by an employee for travel away from home, the amount of the expenses that is deemed substantiated for each calendar day is equal to the lesser of the per diem allowance for that day or the amount computed at the federal M&IE rate for the locality of travel for that day (or partial day). A per diem allowance is treated as paid only for meal and incidental expenses if (1) the payor pays the employee for actual expenses for lodging based on receipts submitted to the payor, (2) the payor provides the lodging in kind, (3) the payor pays the actual expenses for lodging directly to the provider of the lodging, (4) the payor does not have a reasonable belief that lodging expenses were or will be incurred by the employee, or (5) the allowance is computed on a basis similar to that used in computing the employee’s wages or other compensation (such as the number of hours worked, miles traveled, or pieces produced).

.03 Optional method for meal and in- cidental expenses only deduction . In lieu of using actual expenses in computing the amount allowable as a deduction for ordinary and necessary meal and incidental expenses paid or incurred for travel away from home, employees and self-employed individuals who pay or incur meal expenses may use an amount computed at the federal M&IE rate for the locality of travel for each calendar day (or partial day) the employee or self-employed individual is away from home. This amount will be deemed substantiated for purposes of paragraphs (b)(2) and (c) of § 1.274–5, provided the employee or self-employed individual substantiates the elements of time, place, and business purpose of the travel for that day (or partial day) in accordance with those regulations. See section 6.05(1) of this revenue procedure for rules related to the application of the limitation under § 274(n) to amounts determined under this section 4.03. See section 4.05 of this revenue procedure for a method for substantiating incidental expenses that may be used by employees or self-employed individuals who do not pay or incur meal expenses.

January 18, 2005 343 2005–3 I.R.B.

expenses that is deemed substantiated for each calendar day is equal to the lesser of the per diem allowance for that day or the amount computed at the rate set forth in section 5.02 of this revenue procedure for the locality of travel for that day (or partial day, see section 6.04 of this revenue procedure). This high-low substantiation method may be used in lieu of the per diem substantiation method provided in section 4.01 of this revenue procedure, but may not be used in lieu of the meal and incidental expenses only substantiation method provided in section 4.02 or 4.03 of this revenue procedure or the incidental expenses only substantiation method provided in section 4.05 of this revenue procedure.

.02 Specific high-low rates. The per diem rate set forth in this section 5.02 is $204 for travel to any “high-cost locality” specified in section 5.03 of this revenue procedure, or $129 for travel to any other locality within CONUS. The high or low rate, as appropriate, applies as if it were the federal per diem rate for the locality of travel. For purposes of applying the high-low substantiation method and the § 274(n) limitation on meal expenses (see section 6.05 of this revenue procedure), the federal M&IE rate shall be treated as $46 for a high-cost locality and $36 for any other locality within CONUS.

.03 High-cost localities . The following localities have a federal per diem rate of $167 or more and are high-cost localities for all of the calendar year or the portion of the calendar year specified in parentheses under the key city name:

procedure periodically (not less frequently than monthly), rather than daily, by comparing the total per diem allowance paid for the period to the sum of the amounts computed either at the federal M&IE rate(s) for the localities of travel, or at the special rate described in section 4.04(3), for the days (or partial days) the employee is away from home during the period.

(5) Examples . (a) Example 1 . Taxpayer, an employee in the transportation industry, travels away from home on business within CONUS on 17 days (including partial days) during a calendar month and receives a per diem allowance only for meal and incidental expenses from a payor that uses the special rule under section 4.04(3) of this revenue procedure. The amount deemed substantiated under section 4.02 of this revenue procedure is equal to the lesser of the total per diem allowance paid for the month or $697 (17 days at $41 per day).

(b) Example 2 . Taxpayer, a truck driver employee in the transportation industry, is paid a “cents-permile” allowance that qualifies as an allowance paid under a flat rate or stated schedule as defined in section 3.03 of this revenue procedure. Taxpayer travels away from home on business for 10 days. Based on the number of miles driven by Taxpayer, Taxpayer’s employer pays an allowance of $400 for the 10 days of business travel. Taxpayer actually drives for 8 days, and does not drive for the other 2 days Taxpayer is away from home. Taxpayer is paid under the periodic rule used for transportation industry employers and employees in accordance with section 4.04(4) of this revenue procedure. The amount deemed substantiated and excludable from Taxpayer’s income is the full $400 because that amount does not exceed $410 (ten days away from home at $41 per day).

.05 Optional method for incidental ex- penses only deduction . In lieu of using actual expenses in computing the amount allowable as a deduction for ordinary and necessary incidental expenses paid or incurred for travel away from home, employees and self-employed individuals who do

not pay or incur meal expenses for a calendar day (or partial day) of travel away from home may use, for each calendar day (or partial day) the employee or self-employed individual is away from home, an amount computed at the rate of $3 per day for any CONUS or OCONUS locality of travel. This amount will be deemed substantiated for purposes of paragraphs (b)(2) and (c) of § 1.274–5, provided the employee or self-employed individual substantiates the elements of time, place, and business purpose of the travel for that day (or partial day) in accordance with those regulations. See section 4.03 of this revenue procedure for a method that may be used by employees or self-employed individuals who pay or incur meal expenses. The method authorized by this section 4.05 may not be used by payors that use section 4.01, 4.02, or 5.01 of this revenue procedure, or by employees or self-employed individuals who use the method described in section 4.03 of this revenue procedure. See section 6.05(4) of this revenue procedure for rules related to the application of the limitation under § 274(n) to amounts determined under this section 4.05.