IRS Announces Mid-Year Adjustment to 2026 Standard Mileage Rates: What You Need to Know

Rising fuel prices have prompted the Internal Revenue Service to take an unusual step: adjusting the standard mileage rates in the middle of the tax year.

For businesses, employees, and taxpayers who rely on mileage deductions or reimbursements, this change carries important implications for how vehicle expenses are calculated and recorded for the remainder of 2026.

What Changed

The IRS typically announces standard mileage rates once a year, shortly before the new tax year begins. Mid-year revisions are rare — the last one occurred in 2022. This year's adjustment reflects a significant increase in fuel costs since the original 2026 rates were set.

Effective July 1 through December 31, 2026, the revised standard mileage rates are:

• 76 cents per mile for business use, up 3.5 cents from the 72.5-cent rate that applied during the first half of the year

• 23.5 cents per mile for medical purposes

• 23.5 cents per mile for moving purposes, applicable to certain active-duty members of the Armed Forces and, new this year, qualifying members of the intelligence community

• 14 cents per mile for miles driven in service of charitable organizations (this rate is set by statute and does not change)

Why It Matters

Because the revised rates take effect partway through the year, two separate sets of mileage rates now apply to 2026:

• January 1 – June 30, 2026: Original rates (72.5 cents business / 20.5 cents medical and moving)

• July 1 – December 31, 2026: Revised rates (76 cents business / 23.5 cents medical and moving)

This means taxpayers and businesses can no longer apply a single annual rate to their full-year mileage totals. Accurate, date-stamped mileage logs are essential to ensure the correct rate is applied to each trip.

What This Means for Your Business

If your organization reimburses employees for business driving using the IRS standard mileage rate, now is the time to:

1. Update reimbursement policies and payroll systems to reflect the new 76-cent rate for travel on or after July 1, 2026.

2. Communicate the change to employees who track and submit mileage for reimbursement.

3. Review mileage-tracking tools or apps to confirm they've been updated to apply the correct rate based on trip date.

4. Separate first-half and second-half mileage in your records to avoid under- or over-reporting deductible expenses.

Employers should also note that the revised rate applies to mileage allowances paid on or after July 1, 2026, for travel occurring on or after that date — not retroactively to earlier trips.

What This Means for Individual Taxpayers

Self-employed individuals and others who deduct vehicle expenses using the standard mileage rate should keep a clear record of the date, mileage, and business purpose for every trip. Splitting your annual mileage log at the June 30 / July 1 boundary now will save time and reduce errors when preparing your 2026 tax return.

The Bottom Line

This mid-year adjustment underscores how sensitive vehicle-related tax and reimbursement calculations can be to broader economic conditions. With two rates now in effect for 2026, precise recordkeeping is more important than ever.