Resources: Per Diem Rates
On this page:
- General Information
- Determining Per Diem Rates
- Adjustments to Per Diem Rates
- Archived Per Diem Rates
If the traveler elects to be reimbursed based on per diem rates, he/she can choose:
- Full per diem reimbursement which covers lodging, meals and incidentals
- Actual lodging expenses, plus meals-only per diem
- Actual meals expenses, plus lodging per diem
The reimbursement option selected must be used for the entire trip.
Stanford uses per diem rates recommended by the U.S. government to take advantage of governmental cost studies and to ensure general equity with grant and contract requirements.
Determining Per Diem Rates
Find the city (or county if city not listed) and corresponding rates at these government sites:
- For travel within the contiguous United States (including Alaska, Hawaii), see Domestic Per Diem Rates on the U.S. General Services Administration web site.
- For travel in foreign countries, see Foreign Per Diem Rates by Location on the U.S. Department of State web site.
Note: If the county in which you stayed is not listed, use the Basic Rate, noted at the top of the government page above the city and county listings.
Note: If the location of your stay is not listed for the country selected, use the "Other" rate listed in the "Post Name" column (listed alphabetically). For an unlisted suburb of a listed "Post Name," use the "Other" rate, not the rate listed for the location of which it is a suburb.
Adjustments to Per Diem Rates
Stays Longer Than 30 Days
Multiply the daily rate listed on the government sites by .55.
Note: When an individual's original estimated travel is for more than 30 days in one location, these reduced rates (.55 x listed rate) apply from the first day. When an individual in travel status at a location is granted extension to a trip originally estimated at less than 30 days, the 30-days-or-less rate applies for the first 30 days and the more-than-30-days rate applies from the 31st day through the end of the trip.
Automatic Per Diem Calculations for First and Last Day of Travel:
Once you have determined the appropriate rate for the city or county visited and entered it in an iOU expense report, the iOU system automatically calculates the correct amount for the first and last day of travel, at 75% of the meals rate for the first day based on government listed rate for the city traveled to, and 75% of meals rate for the last day, based on the government listed rate for Palo Alto (Santa Clara County.)
Deductions for Meals Included in Registration Fees and Hotel Charges:
When meals are included in conference registration fees or hotel rates, a deduction must be made from the applicable per diem rate. To determine the appropriate deduction amount by travel location, select Meals and Incidental Expense Breakdown from the Domestic Per Diem Rates page of the U.S. General Services Administration web site. (What are Incidental Expenses?)
A Stanford business traveler stayed in a Marriot Hotel in Chicago, Illinois. The cost of breakfast was included in the hotel rate. At the time of travel, the maximum daily per diem rate for meals and incidental expenses (M&IE) for Chicago, Illinois was $64 ($12 breakfast, $18 lunch, $31 dinner, and $3 incidentals). Therefore the traveler would adjust the daily per diem rate to $52 ($64 - $12).
Archived Per Diem Rates
To find rates for previous years, use the government web sites and select desired year:
- For travel within the contiguous United States (including Alaska, Hawaii), see Domestic Per Diem Rates on the U.S. General Services Administration web site. Select the appropriate year from the drop-down menu before selecting a location on the map.
- For travel in foreign countries, see Foreign Per Diem Rates by Location on the U.S. Department of State web site. Select the country from the drop-down menu, then select the appropriate year.