See how the standard mileage rate works, the two 2026 business rates, what costs the rate replaces, eligibility rules, and required records.
The standard mileage rate is an optional cents-per-mile amount used to calculate deductible vehicle costs for qualifying travel. For business use, a taxpayer multiplies eligible miles by the rate effective when those miles were driven. It replaces most actual operating and ownership expenses for that vehicle and period. It is one of two methods for claiming the business mileage deduction.
The taxpayer first identifies qualifying business trips and records the miles. The deductible amount is:
Qualifying business miles × applicable business rate
The rate is not a credit and does not reimburse the taxpayer automatically. It is a method for measuring a deductible expense. Its tax benefit depends on the taxpayer's income, other deductions, entity, limitations, and tax rates.
The IRS also publishes separate rates for medical, certain moving, and charitable mileage. Those categories have different eligibility rules and should not be substituted for the business rate.
The business mileage rate incorporates vehicle costs such as gasoline, oil, maintenance, repairs, tires, insurance, registration, and depreciation or lease-related cost. A taxpayer generally cannot claim those actual costs in addition to the standard-mileage amount for the same vehicle and period.
Business parking fees and tolls can generally be deducted separately. A self-employed taxpayer may also be able to deduct the business share of vehicle-loan interest and certain personal property taxes, subject to the applicable rules.
The rate includes a depreciation component. Using it reduces the vehicle's tax basis, which can matter when the vehicle is sold or exchanged.
The 2026 calculation requires separating miles by date because the rate changed on July 1.
| Period | Miles | Rate | Amount |
|---|---|---|---|
| January–June | 3,000 | $0.725 | $2,175 |
| July–December | 5,000 | $0.76 | $3,800 |
| Total | 8,000 | — | $5,975 |
Applying 76 cents to all 8,000 miles would produce $6,080 and overstate the calculation by $105. A 2026 mileage log should therefore retain trip dates, not only an annual total.
Self-employed taxpayers commonly use it for an owned or leased passenger vehicle used in business. Restrictions apply. For example, the method generally is unavailable for five or more vehicles used simultaneously or a vehicle for which prohibited depreciation methods or certain first-year deductions were claimed.
For an owned vehicle, choosing the standard method in the first business-use year generally preserves flexibility to use actual expenses later. If actual expenses are chosen first, the standard method generally cannot be adopted later for that vehicle. For a leased vehicle, once the standard method is selected, it generally must be used for the entire lease period, including renewals.
Most W-2 employees cannot deduct unreimbursed business mileage on their federal return. Employers may use the IRS rate as a reimbursement benchmark under an accountable plan, but that is a different arrangement from the income-tax deduction. California employment-law reimbursement obligations are separate from the federal income-tax deduction and should not be confused with it.
A sole proprietor generally reports the resulting vehicle expense on Schedule C and completes the vehicle-information questions. The mileage log supports the calculation but is not normally filed with the return. Partners, rental owners, farmers, and qualifying employees may report vehicle costs elsewhere.
California FTB guidance recognizes the simplified standard-mileage approach and points taxpayers to the applicable published federal rate. Adequate records remain required.
California may differ from federal law for depreciation and basis. Because the federal standard rate contains a depreciation allowance, track annual business miles and basis adjustments even when the federal and California deductions initially appear identical.
Heath Income Tax can verify qualifying trips, apply the correct rate by date, compare methods, and reconcile vehicle deductions with Schedule C and California reporting.
Is the IRS mileage rate mandatory?
No. It is optional when the taxpayer qualifies to use it. Actual expenses may be used instead.
Does the standard rate include gas?
Yes. Gas is one of the costs represented by the rate.
Can I use the rate for an electric vehicle?
The standard mileage rate applies to qualifying gasoline, diesel, hybrid, and fully electric vehicles.
Why are there two business rates in 2026?
The IRS revised the business rate effective July 1, 2026. Miles must be assigned to the period in which they were driven.
The definitions and examples on this page are for informational purposes only and do not constitute tax advice. Tax laws change frequently and individual circumstances vary. Consult a qualified tax professional before making decisions based on this content.
Click a question or ask us your own.
Ask Us a Question
Message Sent!
Thank you — we'll get back to you as soon as possible.