Auto per Diem Calculator

Calculate your daily mileage reimbursement for business trips using this professional auto per diem calculator. Simply enter your daily mileage and select your location to get an accurate reimbursement amount.

How to Use This Calculator

Using the auto per diem calculator is simple. Follow these steps to get your reimbursement amount:

Enter your total daily mileage in miles.
Select your location from the dropdown menu.
Click the "Calculate" button to see your reimbursement amount.
Review the result and use it for your expense report.

The calculator uses standard reimbursement rates based on your location. These rates are updated regularly to reflect current government guidelines.

Formula Used

The auto per diem reimbursement is calculated using the following formula:

Reimbursement Amount = Daily Mileage × Rate per Mile

The rate per mile varies by location. For example, in the United States, the standard rate is $0.58 per mile as of 2023.

The calculator applies the appropriate rate based on your selected location. The result is rounded to two decimal places for currency.

Worked Example

Let's say you drove 150 miles in a day in the United States. Here's how the calculation works:

Example Calculation

Daily Mileage = 150 miles

Rate per Mile = $0.58

Reimbursement Amount = 150 × $0.58 = $87.00

So, you would be reimbursed $87.00 for this day's mileage.

Frequently Asked Questions

What is auto per diem?: Auto per diem is a daily reimbursement for business mileage. It helps employees get paid for the miles they drive while traveling for work.
How is the reimbursement rate determined?: The reimbursement rate is based on government guidelines and varies by location. The calculator uses the most current rates available.
Can I use this calculator for personal trips?: No, this calculator is designed for business mileage reimbursement only. Personal trips are not eligible for reimbursement.
Are there any mileage limits?: Yes, there are typically mileage limits for reimbursement. The calculator does not apply these limits automatically, so you should check your company's policies.
How often are the rates updated?: The rates are updated regularly to reflect changes in government guidelines. The calculator will show the most current rates available.