US IRS Mileage Rate Change Calculator: Percentage Change Year to Year
Work out the percentage change in the IRS standard mileage rate between two years — and the cents-per-mile difference — when the IRS updates the optional standard mileage rates.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Rate change | Change (cents/mile) |
|---|---|---|
| 62.5 to 70 cents (+12%) | 12.00% | 7.5 |
| 65.5 to 67 cents | 2.29% | 1.5 |
| 58.5 to 62.5 cents | 6.84% | 4 |
| 67 to 70 cents | 4.48% | 3 |
How This Calculator Works
Enter the previous and new standard mileage rate in cents per mile. The calculator finds the percentage change and the cents-per-mile difference. To see the dollar impact, multiply the cents-per-mile change by your annual business miles.
The Formula
Percentage Change
Old is the starting value, New is the ending value
Worked Example
An IRS business mileage rate rising from 62.5 to 70 cents per mile is a 12% increase — 7.5 cents more per mile. The IRS sets optional standard mileage rates each year that taxpayers can use to deduct vehicle costs instead of tracking actual expenses. There are separate rates for business use (the highest, adjusted mainly for fuel and operating costs), medical/moving (for eligible taxpayers), and charitable driving (set by statute, rarely changing). The business rate is updated annually — sometimes mid-year if costs swing sharply.
Key Insight
The IRS standard mileage rate is a practical shortcut that matters to anyone deducting vehicle use, and a few points clarify it. The standard mileage method lets you deduct a flat cents-per-mile amount instead of tracking actual car expenses (gas, maintenance, depreciation, insurance) — simpler, and often comparable, though high-cost vehicles may deduct more with the actual-expense method. There are three rates: business (the one most people mean, set by the IRS based largely on fuel and vehicle operating costs, and updated each year — occasionally even mid-year when prices move sharply), medical/moving (lower, available to limited taxpayers, e.g. active-duty military moving), and charitable (a low rate fixed by statute that essentially never changes). The percentage change here shows how much the rate moved year to year; the cents-per-mile difference, multiplied by your annual business miles, shows the dollar effect on your deduction — e.g. a 7.5-cent increase on 15,000 business miles adds $1,125 to your deduction. A few practical notes: to use the standard rate for a car you own, you generally must choose it in the first year the car is used for business; you can't use the standard rate if you've claimed certain depreciation methods or for fleets; and you still need a mileage log (date, miles, purpose) to substantiate the deduction. Self-employed taxpayers and businesses use the business rate on Schedule C; employees generally can't deduct unreimbursed mileage under current rules, though employers often reimburse at the IRS rate (a common, tax-free reimbursement benchmark). This calculator compares two rates; for your deduction, apply the appropriate year's rate to your logged business miles.
Frequently Asked Questions
How is the mileage rate change calculated?
Subtract the old rate from the new rate, divide by the old rate, and multiply by 100. From 62.5 to 70 cents/mile is a 12% increase — 7.5 cents more per mile. Multiply the cents-per-mile change by your annual business miles to see the dollar impact.
What is the IRS standard mileage rate?
An optional flat cents-per-mile amount the IRS sets each year that taxpayers can use to deduct vehicle costs instead of tracking actual expenses (gas, maintenance, depreciation, insurance). The business rate is the one most people mean; it's updated annually, occasionally mid-year if costs swing sharply.
Are there different mileage rates?
Yes — three: business (the highest, set on fuel and operating costs, updated yearly), medical/moving (lower, for limited eligible taxpayers like active-duty military moving), and charitable (a low rate fixed by statute that rarely changes). Use the rate matching the purpose of the driving.
Standard mileage or actual expenses?
The standard rate is simpler and often comparable, but a high-cost vehicle may deduct more using the actual-expense method (tracking real costs and depreciation). Generally you must choose the standard rate in the first year a car is used for business to keep the option. Run both to see which gives the larger deduction.
Can employees deduct mileage?
Generally not — unreimbursed employee mileage isn't deductible under current rules. The business rate mainly benefits the self-employed and businesses (claimed on Schedule C). However, employers commonly reimburse employees at the IRS rate, which is a tax-free reimbursement benchmark rather than a deduction.
Related Calculators
Methodology & Review
The change is the difference between the new and old rate divided by the old rate, multiplied by 100. It compares two standard mileage rates (in cents per mile); enter both in the same unit. It does not compute a total deduction or distinguish the business, medical, or charitable rates.
Written by Ugo Candido · Last updated May 22, 2026.