Dear Client,
In general, if you use vehicles in pursuit of a trade or business, you can deduct the ordinary and necessary expenses incurred while operating the vehicle. Taxpayers may use either the standard mileage rate method or the actual cost method to recover vehicle costs. For purposes of these deductions, an “automobile” includes a passenger vehicle, van, pickup or panel truck.
Standard mileage rate vs. actual cost method. In lieu of proving the actual costs of operating an automobile, self-employed individuals may compute the deductible costs for their business use of an auto using a standard mileage rate. The standard mileage rate may also be used to reimburse employees who use their own car for business. Businesses that operate up to four vehicles at the same time can deduct this standard mileage rate rather than keeping track of actual costs. The 2025 standard mileage rate is 70 cents per mile and for 2024 is 67 cents per mile for business. Alternatively, if you use the actual cost method, you may take deductions for depreciation, lease payments, registration fees, licenses, gas, insurance, oil, repairs, garage rent, tolls, tires, and parking fees.
Substantiation. Proper recordkeeping is critical. The recordkeeping requirements vary depending upon which method you use. If you use the standard mileage rate, you should keep a daily log showing the miles traveled, destination and business purpose. Recordkeeping under the actual cost method is somewhat more onerous. You should also keep a mileage log if you use the actual cost method to establish business use percentage. In addition, you must keep receipts, invoices, and other documentation to verify expenses. Finally, you must be able to prove the original cost of the vehicle and the date it was placed in service for business use to claim depreciation.
Personal vs. business miles. Regardless of the method used, if the vehicle is driven for personal as well as business purposes, only expenses or mileage attributable to the percentage of business use are deductible. As long as you use your vehicle more than 50 percent for business during the year, you can pro-rate your deduction. You also have the option of using the standard mileage rate, based on miles of business use for the year times the prescribed rate.
Automobile depreciation and annual limits. The depreciation deductions for passenger automobiles are subject to annual limitations for the year the taxpayer places the passenger automobile in service and for each succeeding year.
Bonus depreciation. A taxpayer who acquires a business vehicle after September 27, 2017, and places the vehicle in service before 2023 is entitled to a 100 percent bonus depreciation deduction in the placed-in-service year. Beginning in 2023, the bonus depreciation rate is 80 percent and decreases by 20 percent each year. Under the luxury car rules, the actual bonus deduction for the year is limited to the first-year cap (e.g., $20,200 for a vehicle placed in service in 2025). However, without adopting an IRS safe harbor, no depreciation deductions may be claimed in any of remaining years of the vehicle’s regular depreciation period. This is because the basis of the vehicle for purposes of computing depreciation during the remaining years is partially reduced if the taxpayer had claimed the 80 percent bonus deduction. The amount of the 80 percent bonus deduction in excess of the first-year cap is recovered at a specified rate per year beginning with the first year after the last year in the vehicle’s depreciation period ($7,060 for a vehicle placed in service in 2025).
This computational “quirk” may be avoided by adopting the IRS safe harbor method of accounting in the first tax year after the placed-in-service year. Under the safe harbor, a taxpayer deducts the first-year depreciation limit ($20,200 for 2025) in the placed-in-service year. In each subsequent year of the depreciation period, the taxpayer claims the depreciation deduction allowed by applying the applicable depreciation table percentage for the year to the cost of the vehicle as reduced by the first-year limit. However, if the depreciation cap for the year is less than this amount, the deduction is limited to the depreciation cap.
Under the One Big Beautiful Bill Act (OBBB Act) the bonus depreciation rate is increased to 100 percent for qualified property acquired and placed in service after January 19, 2025.
Section 179 deduction. The maximum amount of the section 179 deduction is $2,500,000 (as increased by the OBBB Act) for a tax year beginning in 2025 and $2,560,000 for a tax year beginning in 2026. However, for certain sport utility vehicles (SUVs), short-bed trucks, and vans that are exempt from the annual luxury vehicle depreciation caps, the maximum amount of the cost that can be expensed under section 179 for an SUV in any tax year is subject to a lower limitation, which is adjusted annually for inflation. The SUV limitation is $31,300 for tax years beginning in 2025 and $32,000 for tax years beginning in 2026.
Certain heavy vehicles not subject to limits. Sport utility vehicles, trucks, and vans with a gross vehicle weight rating (GVWR) greater than 6,000 pounds are not subject to the annual depreciation caps imposed by the listed property luxury car rules because they are excluded from the definition of a passenger automobile. This can provide a tax break for buying new or used heavy vehicle that will be used over 50% in your business.
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