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Per Diem Guidance

Domestic (continental US) travel Per diems are permissible for meals and incidental expenses (M&IE) for authorized business travel.  For M&IE, the reimbursement method selected must be used for the entire trip and should be established ahead of the trip.  For lodging, all actual expenses must be supported by receipts.  Per diem allowances shall not exceed the maximum stated by the government's published standards.

In the case of travel charged to a sponsored program, the reimbursement arrangements may require prior sponsor approval. 

Reimbursement methods:

Reimbursement method options based on criteria
Reimbursement Method Options
Criteria Per Diem Actual Expenses**
Lodging X
Meals and Incidental Expenses X X
Trip duration is less than or equal to 12 hours. X
Trip duration is greater than 12 hours. X X
First day of travel 75% of the per diem rate X
Last day of travel 75% of the per diem rate X

* Receipts must be submitted for reimbursement.

The M&IE per diem amount should be reduced by the per diem amount of the meal provided or included in the registration or conference fee, unless one of the following applies:

Per Diem Rates

The employee’s travel location determines the maximum per diem reimbursement rate. Dates and locations for other points visited for business should be noted to substantiate the per diem rate used.  In order to expedite the review process, travelers are required to include a print-out of the per diem rate table in their supporting documentation.

Per diem rate to use based on the travel destination:

Per diem rates based on travel destinations
Travel Destination Where to Find the Per Diem Rate
Domestic, also known as Continental United States (CONUS)

The rates are established by the General Services Administration. The rates are listed by city/state or zip code and date.  It is recommended that travelers use the zip code of their travel destination to identify the applicable per diem rates.

If a city is not listed, check to ensure that the county it is -within is also not listed. Visit the National Association of Counties website at to determine the county a destination is located in. If the city is not listed, but the county is, then the per diem rate is the rate for that entire county.

If the city and the county are not listed, then that area is considered to be a Standard CONUS location.


The rates are established by the U.S. Department of State and are listed by travel country/city/date. 
Outside CONUS, Overseas Non-Foreign Areas, such as Alaska, Hawaii, Puerto Rico and Guam

The rates are established by the Defense Travel Management Office - Department of Defense Center for Travel Excellence.  The rates are listed by country/state.

Incidental and Additional Expenses

Expenses that are part of per diem incidentals and additional expenses that are reimbursable with receipts:

List of per diem incidentals and additional expenses that are reimbursable with receipts
Expense Incidental Expenses*
Part of the M&IE per diem rate
Additional Expenses
Receipts required
Tips and fees given to porters, baggage carriers, bellhops, hotel maids, stewards or stewardesses, and others on ships. X
Transportation between places of lodging or business and places where meals are taken, if suitable meals cannot be obtained at the travel location. X
Shuttle, limousine, or livery service charges, to and from airports and railroad stations plus reasonable tips, where such costs do not exceed comparable taxi fare. X
Internet connections for business use at hotels, conference sites, airports, and Internet cafes while traveling. X
Taxi fares, including tips, to and from airports and railroad stations. X
Mailing cost associated with filing travel expense reports. X

  * As defined by the Federal Travel Regulations.

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