Quick answer: For 2026, the IRS business standard mileage rate is 72.5 cents per mile from January 1 to June 30, and 76 cents per mile from July 1 to December 31. Because the rate changed mid-year, you must split your mileage log by date and apply each rate to the correct half of the year to claim the full deduction. Key Takeaways Business mileage rate: 72.5¢ (Jan 1–Jun 30) and 76¢ (Jul 1–Dec 31, 2026). The IRS raised the rate mid-year to reflect rising fuel costs — a rare mo

Penalties aren’t just a tax issue—they’re a bookkeeping issue.