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Understanding the IRS Mid-Year Optional Vehicle Mileage Rate Increase

For real estate professionals showing properties across Billings or subcontractors traveling throughout Montana and neighboring states, vehicle expenses are a major line item. With fuel costs remaining stubbornly high, tracking those business miles just became slightly more valuable. To account for soaring gas prices, the IRS has announced a mid-year increase to the optional standard mileage rate, effective July 1, 2026. This adjustment provides a welcome boost for service-based businesses looking to optimize their tax deductions for the second half of the year.

The 2026 Mid-Year Mileage Rate Adjustments

The IRS standard mileage rate is typically set annually, based on an independent study of the fixed and variable costs of operating a vehicle. However, when fuel prices fluctuate dramatically, the IRS occasionally steps in to adjust the rates mid-year. If your business relies heavily on travel, this 3.5-cent bump can make a meaningful difference to your tax liability.

Starting July 1, 2026, the rate for deductible business miles increases to 76.0 cents per mile. Additionally, the rate for deductible medical or moving expenses—which is currently limited to active-duty military members—will rise by 3 cents to 23.5 cents per mile. The rate for charitable driving is set by statute and remains unchanged at 14 cents per mile.

Active-duty military and veterans tax planning

A Quick Look at the New Rates

Purpose Jan 1 – Jun 30, 2026 Jul 1 – Dec 31, 2026
Business 72.5¢ 76.0¢
Medical/Moving (Military) 20.5¢ 23.5¢
Charitable 14.0¢ 14.0¢

Standard Mileage vs. Actual Expenses

When it comes to deducting vehicle use, taxpayers generally have two options: the standard mileage rate or calculating actual expenses. The standard rate is designed for simplicity. It bundles gas, oil, lubrication, maintenance, repairs, insurance, vehicle registration fees, and straight-line depreciation into one per-mile figure. You can still deduct parking, tolls, and the business portion of state and local property taxes separately.

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While the standard rate is convenient, tracking your actual costs might yield a larger deduction, particularly when fuel prices skyrocket. Switching to the actual expense method requires meticulous record-keeping, but for service-based businesses generating $100K to $500K in revenue, every tax dollar saved is a dollar that can be reinvested into operations.

Important Limitations on the Standard Rate

It is critical to remember that you cannot use the standard mileage rate if you have previously depreciated the vehicle using the Modified Accelerated Cost Recovery System (MACRS) or claimed a Section 179 deduction for it. Furthermore, the standard rate is prohibited for vehicles used for hire, or if you operate five or more vehicles simultaneously (such as a delivery fleet).

Sales tax paid on a vehicle purchase must also be capitalized into the vehicle's cost basis, meaning it cannot be deducted separately if you elect the standard mileage method.

Business owners discussing tax strategy and deductions

Building Business Stability with Accurate Tracking

Our approach to financial health centers around the "three-legged stool" of business stability: keeping your books accurate, your taxes optimized, and your payroll on time. Tracking your mileage correctly directly reinforces those first two legs. If your books accurately reflect your travel logs, optimizing your vehicle tax deductions at year-end becomes a seamless, stress-free process.

For independent contractors moving between job sites and local entrepreneurs handling client visits, maintaining clear logs detailing the date, destination, and business purpose for every trip is essential. The IRS expects contemporaneous documentation if your deductions are audited. Whether you use the standard rate or actual expenses, robust bookkeeping gives your business the solid foundation it needs to weather challenges and make confident decisions.

Maximizing Your Montana Business Deductions

Navigating mid-year tax changes can be complicated, but you do not have to figure it out alone. As a firm built on Montana values of simplicity, honesty, and lasting relationships, we are here to provide practical and personal solutions tailored to your specific operational needs.

Whether you need help deciding between the standard mileage rate and actual expenses, or you want to ensure your overall bookkeeping is audit-ready, our team in Billings is ready to help. Schedule a consultation today, and let us make sure your business is positioned to take full advantage of these new rates.

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