If you use your own vehicle for transportation related to your work as an employee, you can deduct your expenses for business use of your vehicle, subject to the rules on deductible transportation expenses. You would need to file Form 2106, Employee Business Expenses, and take the deduction as a job-related itemized deduction on Schedule A. If you are self-employed and use your vehicle in your business, your expenses are business expenses, and would generally be reported on Schedule C, C-EZ, or F.

If you qualify, you can deduct your actual expenses or use the standard mileage rate. If you use actual expenses, you will need to divide your expenses between deductible transportation expenses and personal expenses. These can be allocated on the basis of mileage for each purpose. And if you use the standard mileage rate, you will need to keep track of your mileage for work or business use of your vehicle.

Interest on a Car Loan and Property Taxes

Interest on a loan you take out to purchase a vehicle and property taxes on your vehicle are generally considered separately. These are not included in the standard mileage rate.

Interest

Interest you pay on a car loan is personal interest and is generally not deductible. But if you take out a home equity loan, that qualifies in order to deduct mortgage interest, you may be able to take an itemized deduction for the interest on Schedule A.

If you are self-employed and use the vehicle in your business you can deduct a percentage of your interest, based on the business use of the vehicle, as a business expense, on Schedule C, C-EZ, or F, for example.

Property Taxes

Personal property taxes that are based on the value of your vehicle can be taken as an itemized deduction, even if you did not use the vehicle for business. If you are self-employed, you can take the business percentage of personal property taxes as a business expense, and the balance as an itemized deduction.

Standard Mileage Rate

The standard mileage rate changes periodically and is published by the Internal Revenue Service (IRS). If you elect to use the standard mileage rate for a vehicle that you own, you must use it the first year the vehicle is available for use. After that year, you can use either actual expenses or the standard mileage rate. If you elect to use the standard mileage rate for a vehicle that you lease, you have to use it for the entire lease term.

Depreciation

The standard mileage rate includes an allowance for depreciation, so if you decide to use it, you cannot take depreciation or the special depreciation allowance.

Exceptions to Using Standard Mileage Rate

There are some cases in which you cannot use the standard mileage rate. It cannot be used for cars for hire, such as taxis, or when you use five or more vehicles at the same time in your business. You are not considered to be using them at the same time if you alternate between vehicles. A rural mail carrier who receives a qualified reimbursement cannot use the standard mileage rate. And, if you are using a vehicle provided by your employer, you cannot use the standard mileage rate.

Expenses in Addition to the Standard Mileage Rate

You can deduct business-related parking fees and tolls in addition to the standard mileage rate, except for parking at your regular place of work, which is considered part of your nondeductible commuting expense.

Actual Expenses

If you use actual expenses for the use of your vehicle, you can include gas, oil, repairs, tires, insurance, licenses and registration fees, garage rent, parking and tolls, and lease payments or depreciation.

Depreciation

There are basically three ways to recover the cost of your own vehicle for tax purposes, when you use the vehicle for business purposes:

• Section 179 deduction
• Special depreciation allowance
• Depreciation deductions

Section 179 Deduction

You can take the section 179 deduction for part or all of the business portion of the cost of a vehicle, instead of taking depreciation over the years. This deduction can be taken only in the first year the vehicle is placed in service. You cannot claim a section 179 deduction for a vehicle you started using for personal purposes one year and then starting using for business purposes in a later year.

50% Business Use Test

In order to qualify for the section 179 deduction, you must use the vehicle more than 50% for business. You then take your business percentage and multiply it by the cost of the vehicle to determine the amount eligible for the section 179 deduction.

Limits

There are three limits that apply on the section 179 deduction:

1. There is an overall limit on the amount you can claim as a section 179 deduction for the year. This is a fixed dollar amount that may change periodically. This amount can be found in the instructions and publications the IRS updates each year. And, the total section 179 deduction after limitations cannot be more than your taxable income from the active conduct of a trade or business – the section 179 deduction cannot generate a loss.
2. Sport utility and certain other vehicles are subject to a fixed dollar limit on the amount of the vehicle’s cost that can be taken into account in calculating the section 179 deduction.
3. The total amount of your section 179 deduction and your depreciation deduction for a qualified vehicle you place in service during the year is limited to a certain fixed dollar amount.

Effect on Basis

The section 179 deduction reduces your basis in the vehicle for purposes of calculating depreciation and for calculating an eventual gain or loss on the sale or disposal of the vehicle. Also, if you meet the 50% business use test the first year, and in a subsequent year your business use drops below 50%, you may have to recapture, or include in your income, any excess depreciation in that subsequent year.

How To Claim the Section 179 Deduction

You must claim the section 179 deduction in the year you purchase the vehicle and start using it for business or work. If you are an employee, you need to file Form 2106, Employee Business Expenses. If you are self-employed you would use Form 4562, Depreciation and Amortization, to claim the deduction.

Special Depreciation Allowance

In the year you buy a vehicle and place it in service, you can deduct 50% of the business portion of the cost as a special depreciation allowance, provided you use the vehicle more than 50% for business or work. You figure the special depreciation allowance after the section 179 deduction, if you choose to claim it, and before calculating depreciation. Both the section 179 deduction and the special depreciation allowance reduce the basis of your vehicle.

Statement of Election Not to Claim Allowance or to Claim 30%

You can choose not to claim this special allowance, or you can claim a 30% allowance instead of 50%. If so, you must attach a statement to your tax return, indicating the class of property (5-year property in this case) and that you are electing to claim 30% instead of 50%, or that you are electing not to claim the special depreciation allowance. The election you make will apply to any other 5-year property you placed in service during the year – the election is made based on a class of property.

Basis Reduction

If you choose not to claim the special allowance, you need to attach the statement to your return because if you do not, the basis in your vehicle will be reduced by the amount of the allowance, even if you do not claim it.

Depreciation Deductions

In order to calculate depreciation on your vehicle, you need to know the basis, when you placed the vehicle in service, and the depreciation method to use.

Basis

If you purchase a vehicle and place it in service the same year, your depreciable basis is the business percentage of the cost, less any section 179 deduction or special depreciation allowance you take. If you convert a vehicle from personal to business use, the basis for depreciation is the fair market value or your adjusted basis in the vehicle on the date of conversion. Your adjusted basis would depend on how you acquired the vehicle (purchased it, received it as a gift or inheritance), and would include any increases or decreases in the original basis, such as permanent improvements or additions to the vehicle, depreciation taken in prior years, or a casualty loss, for example.

Depreciation Method

Generally, you use the Modified Accelerated Cost Recovery System (MACRS) to depreciate vehicles. But if you used the standard mileage rate to deduct expenses the first year you used the vehicle, you will have to use the straight-line depreciation method if you decide to use actual expenses in a later year. Also, in order to use MACRS, you must use the vehicle more than 50% for business. Otherwise, you must use straight-line.

Accelerated depreciation methods include the 200% declining balance method and the 150% declining balance method. When choosing a depreciation method, you may want to consider which method will give you the most tax advantage, based on your individual circumstances, financial projections, and tax planning. The 200% declining balance method provides the largest deductions in the earlier years, followed by the 150% method. The straight-line method provides for equal depreciation deductions over the life of the vehicle.

Depreciation Chart

You can find an MACRS depreciation chart in IRS Publication 463, Travel, Entertainment, Gift, and Car Expenses. Once you determine the basis of your vehicle, when you placed it in service, and the depreciation method you will use, you can use the chart to find your depreciation deduction for the year. There is a limit on the maximum depreciation deduction that can be taken each year, depending on the year in which you placed the vehicle in service. The referenced publication also includes a table with these limitations.