Mileage Deduction vs Actual Expenses: Which Wins in 2026

The standard rate is simple; actual expenses can be bigger. The winner depends on your car, your miles, and your repair bills. Here is the math.

How each method works

The standard mileage method needs one number per half-year: business miles. Multiply by 72.5 or 76 cents and you are done, plus parking and tolls for business trips, which are deductible under either method. You still need the mileage log, but you do not need gas receipts, repair invoices, or insurance bills.

The actual expenses method totals everything the car cost you for the year: gas and oil, insurance, registration, repairs, maintenance, tires, depreciation (or lease payments), and even car washes for a business vehicle. Multiply the total by your business-use percentage. A $12,000 annual cost at 80 percent business use is a $9,600 deduction. The record burden is real: every receipt, plus the same mileage log to establish the business-use percentage.

The break-even math

Take a driver with 12,000 business miles split evenly across the 2026 halves. Standard method: $8,910. For actual expenses to win, the business-use share of total costs must exceed $8,910, which at 80 percent business use means total car costs above $11,138, or about 93 cents per mile all-in. Many drivers clear that easily in years with major repairs or with a new car depreciating fast; few clear it with a paid-off economy car sipping cheap gas.

Flip the scenario: 25,000 business miles, same split. Standard method: $18,563. Actual expenses at 90 percent business use need total costs above $20,625 to win, over 82 cents per mile. High-mileage drivers almost always win with the standard rate because the per-mile rate scales linearly while actual costs have large fixed components.

When actual expenses usually win

Actual expenses tend to win in four situations. New expensive vehicles: first-year depreciation on a $45,000 car can exceed $9,000 alone. Repair-heavy years: a $3,500 transmission rebuild lands entirely in one year's actual costs. High insurance: young drivers or expensive cars can pay $3,000-plus annually. Leased luxury vehicles: lease payments are fully deductible at the business-use percentage, and expensive leases add up fast.

The switching rules

You can switch from standard mileage to actual expenses in a later year, but you cannot switch from actual expenses to standard mileage for the same vehicle later. The IRS treats the choice as one-way once you claim actual expenses (including depreciation) on a vehicle. This makes the first year of a new business vehicle the most important decision: starting with standard mileage preserves the option to switch to actual later; starting with actual locks you in.

Leased vehicles have a stricter rule: you must use the standard mileage rate for the entire lease period if you use it in the first year. Choose at lease signing, because there is no switching mid-lease.

Depreciation limits under actual expenses

Actual expenses include depreciation, but passenger vehicles face the Section 280F luxury caps: for 2026, first-year depreciation is limited to $20,300 with bonus ($12,300 without). Heavy SUVs over 6,000 pounds escape these caps. If you use actual expenses on a regular car, the depreciation piece of your deduction is capped whether you like it or not, which is another quiet advantage of the standard rate for expensive sedans.

Sources: IRS Publication 463; IRS Revenue Procedure 2019-46 (standard mileage rules). Data current as of October 2026. Not tax advice.

Frequently asked questions

Is the standard mileage rate usually better than actual expenses?

For fuel-efficient owned cars and high-mileage drivers, usually yes. Actual expenses tend to win for new expensive vehicles, repair-heavy years, high insurance costs, or leased luxury cars.

Can I switch from actual expenses to standard mileage?

No. Once you claim actual expenses (including depreciation) on a vehicle, you cannot switch to standard mileage for that vehicle. You can switch from standard to actual in a later year.

Can I switch methods on a leased car?

No. If you use the standard mileage rate in the first year of a lease, you must use it for the entire lease period.

Are parking and tolls included in the mileage rate?

No. Business parking fees and tolls are deductible separately under either method, on top of the mileage or actual-expense deduction.

Does the mileage rate cover depreciation?

Yes. The business standard mileage rate is built from both fixed costs (including depreciation) and variable costs, which is why you cannot also deduct depreciation when using the standard rate.