1. What is a DOD Per Diem Calculator?

Definition: This calculator estimates the per diem allowance based on the daily rate and number of travel days.

Purpose: It helps military personnel and DOD employees calculate their official travel reimbursement for 2025.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Total per diem allowance ($)
• \( R \) — Daily rate ($/day)
• \( D \) — Number of travel days (days)

Explanation: The daily rate is multiplied by the number of travel days to calculate the total reimbursement amount.

3. Importance of Per Diem Calculation

Details: Accurate per diem calculations ensure proper reimbursement for official travel expenses according to DOD regulations.

4. Using the Calculator

Tips: Enter the current daily rate (check DOD tables for 2025 rates) and the number of travel days. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Where can I find the official DOD per diem rates?
A: Check the Defense Travel Management Office website for current year rates.

Q2: Does this include partial days?
A: No, this calculates full days only. Partial days are typically reimbursed at 75% of the daily rate.

Q3: Are meals included in this calculation?
A: Yes, standard per diem rates include meals and incidental expenses (M&IE).

Q4: How does location affect the rate?
A: Rates vary by location - use the specific rate for your travel destination.

Q5: Is lodging included in per diem?
A: Lodging is typically separate from M&IE and calculated based on actual expenses up to the location limit.