Can You Switch From Actual Expenses to Standard Mileage?

You can switch from actual expenses to the standard mileage rate on a business vehicle only if you used the standard mileage rate in the first year that vehicle was available for business use. If you claimed actual expenses in year one, that vehicle is locked into the actual expense method for the rest of its business life, with no way back.¹ The 2026 business standard mileage rate is 72.5 cents per mile, up 2.5 cents from 2025.²

Why the First Year Decides Everything

The rule that governs every method change is the first-year election. To keep the standard mileage rate available for a vehicle at any point in its business life, you had to choose it in the first year the car was available for use in your business.¹ Choosing the mileage rate that first year does not commit you to it forever. It simply keeps the door open.

Skipping the mileage rate in year one and claiming actual expenses instead eliminates the mileage rate option for that vehicle permanently.³ The decision is per vehicle and per lifetime. An amended return will not fix it. A change in your business structure will not reset it. Using the vehicle for a different kind of business activity will not reset it either. The only way to access the mileage rate again is to replace the vehicle and make the correct election for the replacement in its first business year.

If You Elected the Mileage Rate First, You Can Switch Back

If you correctly chose the standard mileage rate in year one, then moved to actual expenses in a later year, you can return to the mileage rate in any future tax year.⁴ This is the flexibility the first-year election preserves. Many taxpayers use it deliberately: actual expenses during a year of heavy repairs or a costly tire replacement, then back to the mileage rate once the vehicle settles down.

One boundary applies no matter what your history looks like: you cannot use the standard mileage rate if you operate five or more vehicles at the same time.⁴ Fleet operators are on actual expenses whether they want to be or not.

Depreciation Choices Can Also Block the Switch

A correct first-year election is necessary but not sufficient. Certain depreciation methods claimed during your actual-expense years will permanently close off the mileage rate, even if you started with mileage in year one. The mileage rate already contains a built-in depreciation component (35 cents per mile for 2026), so pairing it with accelerated depreciation would create a double benefit.⁵

Under Revenue Procedure 2019-46, you cannot use the standard mileage rate on a vehicle for which you have:³

Claimed a Section 179 deduction. For SUVs between 6,000 and 14,000 pounds, the Section 179 limit was $31,300 in 2025.
Used MACRS depreciation.
Taken bonus depreciation under Section 168(k). One hundred percent bonus depreciation is permanently available for qualifying property placed in service after January 19, 2025.
Used any depreciation method other than straight-line.

A single year of any of these is enough to bar the mileage rate going forward. If you want to keep the option to switch back, use only straight-line depreciation during your actual-expense years. This is the trap most people fall into. They take the larger accelerated write-off without realizing they’ve traded away future access to the mileage rate on that vehicle.

Leased Vehicles Follow a Stricter Rule

Leased vehicles do not get the year-to-year flexibility that owned vehicles do. If you choose the standard mileage rate on a leased car, you must use it for the entire lease period.¹ There is no mid-lease change to actual expenses.

And if you claimed actual expenses after 1997 on a leased vehicle, you can never use the standard mileage rate for that vehicle.¹ For a leased business vehicle, the mileage rate decision has to be made at the start of the lease. Recovering from the wrong first-year choice means ending the lease early, usually with penalties.

Basis Adjustments When You Switch

If your history allows the switch, the mechanics require attention. Every business mile you drove under the standard mileage rate reduced your vehicle’s tax basis by the depreciation component of the rate, even though you never separately claimed depreciation. The per-mile depreciation amounts are:⁵

2021–2022: 26 cents per mile
2023: 28 cents per mile
2024: 30 cents per mile
2025: 33 cents per mile
2026: 35 cents per mile

Three years at 12,000 business miles a year can easily knock $10,000 or more off your basis, depending on which years are involved. You need that adjusted basis when you set up depreciation under actual expenses and again if you sell or trade in the vehicle. Missing it produces a wrong depreciation schedule or an unexpected taxable gain on disposal.

When switching to actual expenses on a car that isn’t fully depreciated, you must use straight-line depreciation over the vehicle’s remaining estimated useful life, subject to the Section 280F limits for passenger vehicles.¹ Starting MACRS or bonus depreciation in that first actual-expense year would permanently block any return to the mileage rate later.

Record-Keeping Changes You’ll Need to Make

The paperwork changes with the method. Under actual expenses you kept receipts for fuel, oil, repairs, tires, insurance, parking, tolls, and registration. Under the standard mileage rate you keep a mileage log showing the date of each trip, the business destination, the business purpose, the miles driven, and odometer readings at the start and end of the year.

The log has to be contemporaneous, meaning recorded at or near the time of each trip. Weekly updates are generally acceptable. Reconstructing a year of trips from memory in April will not survive an audit. GPS-based tracking apps qualify as long as they capture the same data points.

Sole proprietors report vehicle information on Part IV of Schedule C, which asks for total business, commuting, and personal miles.⁶ The numbers there have to match your log. In a year you change methods, keep the prior method’s records intact as well; you will need them for the basis calculation and to defend both years if the return is questioned.

Run Both Numbers Before You Commit

The 2026 rate of 72.5 cents per mile applies equally to gasoline, diesel, hybrid, and electric vehicles and covers both fixed costs (insurance, registration, depreciation) and variable costs (fuel, oil, maintenance).² The mileage rate tends to favor high-mileage drivers in fuel-efficient, low-maintenance vehicles. Actual expenses tend to favor expensive vehicles with high fuel, insurance, or repair costs.

Before you claim accelerated depreciation on a vehicle where you started with the mileage rate, calculate both methods for a representative year. A one-time Section 179 or bonus depreciation deduction can feel like a win in the moment and cost you every future year of mileage-rate flexibility on that car.

1
Internal Revenue Service. Publication 463 (2025), Travel, Gift, and Car Expenses
2
Internal Revenue Service. IRS sets 2026 business standard mileage rate at 72.5 cents per mile, up 2.5 cents
3
Internal Revenue Service. Revenue Procedure 2019-46
4
Internal Revenue Service. Topic no. 510, Business use of car
5
Internal Revenue Service. Notice 2026-10
6
Internal Revenue Service. 2025 Instructions for Schedule C (Form 1040)