Article Highlights:

  • Standard Mileage Rates for 2024
  • Business, Charitable, Medical and Moving Rates
  • Important Considerations for 2024
  • Switching Between the Actual Expense and Standard Mileage Rate Methods
  • Employer Reimbursements
  • Employee Deductions Suspended
  • Special Allowances for SUVs

As it does every year, the Internal Revenue Service recently announced the inflation-adjusted 2024 optional standard mileage rates used to calculate the deductible costs of operating an automobile for business, charitable, medical, or moving purposes.

Beginning on Jan. 1, 2024, the standard mileage rates for the use of a car (or a van, pickup or panel truck) are:

  • 67 cents per mile for business miles driven (including a 30-cent-per-mile allocation for depreciation). This is up from 65.5 cents per mile in 2023;
  • 21cents per mile driven for medical or moving purposes, down from 22 cents per mile in 2023; and
  • 14 cents per mile driven in service of charitable organizations.

The business standard mileage rate is based on an annual study of the fixed and variable costs of operating an automobile. The rate for medical and moving purposes is based on the variable costs as determined by the same study. The rate for using an automobile while performing services for a charitable organization is statutorily set (it can only be changed by Congressional action) and has been 14 cents per mile for over 25 years.

When using a personal vehicle while performing services for a charitable organization, and instead of using the 14 cents a mile method, a taxpayer who itemizes their deductions can deduct directly-related out-of-pocket expenses, such as the cost of gas and oil. However, the expenses of general repair and maintenance, depreciation, registration fees, or the costs of tires or insurance aren’t deductible.

Important Considerations for Business Use of a Vehicle –

Taxpayers always have the option of calculating the actual costs of using their vehicle for business rather than using the standard mileage rates. In addition to volatile fuel prices, the bonus depreciation as well as increased depreciation limitations for passenger autos may make using the actual expense method worthwhile during the first year a vehicle is placed in business service. While the bonus depreciation rate had been 100% during 2018-2022, it was 80% for 2023, and will be 60% for vehicles put in service in 2024.

However, the standard mileage rates cannot be used if you have used the actual method (using Sec. 179, bonus depreciation and/or MACRS depreciation) in previous years. This rule is applied on a vehicle-by-vehicle basis. In addition, the business standard mileage rate cannot be used for any vehicle used for hire or for more than four vehicles simultaneously.

What business owners using the standard mileage rate frequently overlook is that parking and tolls, as well as state and local property taxes paid for the vehicle and attributable to business use, may be deducted in addition to the standard mileage rate.

Employer Reimbursement

When employers reimburse employees for business-related car expenses using the standard mileage allowance method for each substantiated employment-connected business mile, the reimbursement is tax-free if the employee substantiates to the employer the time, place, mileage and purpose of employment-connected business travel.

The Tax Cuts and Jobs Act eliminated employee business expenses as an itemized deduction, effective for 2018 through 2025. Therefore, during these years employees may not take a deduction on their federal returns for unreimbursed employment-related use of their autos, light trucks, or vans.

However, self-employed taxpayers can still deduct the business use of a vehicle. Regardless of whether the standard mileage rate or actual expense method is used, a self-employed taxpayer may also deduct the business use portion of interest paid on an auto loan on their Schedule C.

Faster Write-Offs for Heavy Sport Utility Vehicles (SUVs)

Many of today’s SUVs weigh more than 6,000 pounds and are therefore not subject to the limit rules on luxury auto depreciation; taxpayers with these vehicles can utilize both the Section 179 expense deduction (up to a maximum of $30,500 in 2024) and the bonus depreciation (the Section 179 deduction must be applied before the bonus depreciation) to produce a sizable first-year tax deduction. However, the vehicle cannot exceed a gross unloaded vehicle weight of 14,000 pounds. Caution: Business autos are 5-year class life property. If the taxpayer subsequently disposes of the vehicle before the end of the 5-year period, as many do, a portion of the Section 179 expense deduction will be recaptured and must be added back to the taxpayer’s income (SE income for self-employed individuals). The future ramifications of deducting all or a significant portion of the vehicle’s cost using Section 179 should be considered.

If you have questions related to the best methods of deducting the business use of your vehicle or the documentation required, please give this office a call.


If you have any questions, please contact our office at (503) 224-5321. Isler Northwest LLC is a firm of business advisors and CPAs in Portland, Oregon. Our service goal at Isler Northwest is to earn our clients’ trust as their primary business and financial advisor.

Isler Northwest
(503) 224-5321
1300 SW 5th Avenue
Suite 2900
Portland, Oregon 97201