In June of 2008, at the height of the recession, fuel prices spiked and a wrote a blog entry on called Car Allowances in the Age of Skyrocketing Fuel Costs. A lot has transpired in the economy, so it seems an opportune time to update that entry.
QUESTION #1 -- What types of costs associated with operating a motor vehicle are reasonably attributable to an outside sales person’s use of a motor vehicle ?
When it comes to answering questions like this, my “go-to” source is the American Automobile Association’s (AAA) annual report on driving costs (“Your Driving Costs”). This highly respected report has been published annually for 51 years and to my knowledge is the most thorough, comprehensive, and reliable information available on the subject of the cost of operating a vehicle in the United States. In it, they consider virtually every cost element including:
- Fuel – Fuel mileage is based on EPA fuel economy ratings weighted 60 percent city and 40 percent highway driving.
- Maintenance — Costs include retail parts and labor for normal, routine maintenance as specified by the vehicle manufacturer. They also include the price of a comprehensive extended warranty with one warranty claim deductible of $100 and other wear-and-tear items that can be expected to require service during five years of operating the vehicle. Sales tax is included where applicable on a national average basis.
- Tires — Costs are based on one set of replacement tires of the same quality, size and rating as those that came with the vehicle. Mounting, balancing, and sales tax are also included.
- Insurance — Based on a full-coverage policy for a married 47-year-old male with a good driving record, living in a small city and commuting three to 10 miles daily to work. The policy includes $100,000/$300,000 coverage limits with a $500 deductible for collision and a $100 deductible for comprehensive coverage.
- License, Registration and Taxes — Costs include all government taxes and fees payable at time of purchase, as well as fees due each year to keep the vehicle licensed and registered. Costs are computed on a national average basis.
- Depreciation — Based on the difference between new-vehicle purchase price and estimated trade-in value at the end of five years.
- Finance Charges — Based on a five-year loan at 6% APR with a 10% down payment. The loan amount includes taxes and the first year’s license fees, both computed on a national average basis.
QUESTION #2 — What is a reasonable rate at which to reimburse the salesperson for the costs they incur in operating their personal motor vehicle for business use?
An obvious consideration when determining applicable reimbursement rates is vehicle type. Here too, AAA provides useful information, offering data on five different classes of vehicles:
- Small Sedan — Chevrolet Cobalt, Ford Focus, Honda Civic, Nissan Sentra and Toyota Corolla.
- Mid-Size Sedan — Chevrolet Impala, Ford Fusion, Honda Accord, Nissan Altima and Toyota Camry.
- Large Sedan — Buick Lucerne, Chrysler 300, Ford Taurus, Nissan Maxima and Toyota Avalon.
- Sports Utility (SUV) — Chevrolet Traverse, Ford Explorer, Jeep Grand Cherokee, Nissan Pathfinder and Toyota 4Runner.
- Mini-Van — Dodge Grand Caravan, Kia Sedona, Honda Odyssey and Toyota Sienna.
The table below estimates the total cost of operating all five types of vehicles in California. It includes AAA data adjusted to reflect California differentials versus the national average, and increased usage (i.e., 25,000 miles per year).
DRIVING COSTS
Fuel Cost Summary
|
YEAR |
Avg $/Gal |
|
2006 |
$2.81 |
|
2007 |
$3.08 |
|
2008 |
$3.51 |
|
2009 |
$2.68 |
|
2010 |
$3.09 |
|
2011 |
$3.84 |
|
Overall Average |
$3.17 |
(1) Based on $3.17 per gallon which is the weekly average fuel cost in California for regular grade gasoline between January 1, 2006 and July 18, 2011 (as reported by the U.S. Energy Information Administration, a division of the U.S. Department of Energy.)
(2) The National Association of Insurance Commissioners (NAIC) reports California auto insurance rates are approximately 20% higher than the national average.
(3) Represents the amount over AAA's standardized depreciation schedule which is computed at 15,000 miles per year.
(4) Total cost per year divided by total miles per year
QUESTION #3 -- Is the Internal Revenue Service (IRS) mileage rate a worthy and acceptable measure of the costs associated with operating a personal motor vehicle for business use?
The IRS standard mileage rate used to calculate the deductible costs of operating an automobile for business is 51 cents per mile in 2011. (NOTE: In 2012 this is increasing to 55.5 cents.)This is the amount per mile that the IRS allows small businesses and self-employed persons to use to calculate their vehicle expenses for tax deduction purposes. The standard mileage rate can be used for all mileage accumulated for work-related trips, but “commuting” between home and work does not qualify for this type of deduction. This rate is considered applicable for cars, vans, pickups and panel trucks. IRS has detailed rules for determining when travel between home and business locations should be considered “commuting.” The interpretation of the IRS standards beyond my expertise.
The table below lists the IRS standard mileage rates for the years relevant to this study:
| YEAR |
IRS Standard Mileage Rate for Business Use of Personal Vehicles (cents/mile) |
|
2006 |
44.5 |
|
2007 |
48.5 |
|
2008 (Jan – Jun) |
50.5 |
|
2008 (Jul – Dec) |
58.5 |
|
2009 |
55.0 |
|
2010 |
50.0 |
|
2011 |
51.0 |
|
Overall Average (1) |
50.6 |
1) Based on a blended average of 54.5 cents/mile in 2008.
The standard mileage rate for business is based on an annual study of the fixed and variable costs of operating an automobile. The standard mileage rate is determined annually for the IRS by Runzheimer International, an independent contractor, which also performs consulting and other services to many large corporations.
I was unable to locate specific data on how the IRS rate is calculated. What is clear, however, is that it is an average rate that approximates operating expense for all types of vehicles and in all geographic regions, but does not specifically relate to any one type or region. Therefore, it is equally likely to overstate as it is to understate actual operating expenses incurred. Typically, businesses that choose to use the standard mileage rate do so because it is easier to use than the actual costs method (which requires keeping complete and accurate records of all applicable expenses). In my experience, because of the amount of work required to compute the actual cost of vehicle operation, the vast majority of companies elect to use the IRS standard mileage rate to reimburse employees for business use of personal vehicles. I have not encountered any company in my consulting work that reimburses mileage at less than the IRS rate based on any systemic analysis.
CONCLUSION
As the data above demonstrates, the actual cost of vehicle operation varies dramatically based on vehicle type, usage and geography. It appears to me that the IRS rate understates actual operating cost for most mileage and vehicle-type scenarios. In fact, it is not until vehicle usage exceeds 20,000 miles that operating cost falls below 51 cents per mile for all but the smallest and least expensive vehicles.
However, at the 25,000 mile per year level, the IRS rate very nearly approximates actual usage costs for the types of vehicles typically used in sales situations—namely large and mid-size sedans. The actual cost for operating these vehicles at 25,000 per year is between $0.46 and $0.56 per mile making the IRS standard rate of $0.51 a reasonable, and I think realistic, alternative to the onerous task of computing actual operating cost.