Business Mileage Deduction Calculator
Compare the standard-mileage deduction with the actual-expense method for 2025 or 2026, including parking and tolls.
Last updated: 2026-03-26
Business mileage deduction calculator
Enter your values
Estimate the business mileage deduction with the IRS standard rate and compare it with the actual-expense method.
Recommended Deduction
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Enter business miles, vehicle expenses, and business-use share to compare the standard and actual deduction methods.
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Example calculations
Tap an example to prefill the calculator with sample values.
Sales rep commuter
12k business miles with a moderate cost base
Useful when the standard mileage method might beat an average-cost sedan even after adding tolls and parking.
Result: The standard mileage method often wins when annual vehicle costs are controlled and the business-use share is meaningful but not extreme.
High-cost vehicle year
Fewer miles with larger actual costs
A useful check when repairs, insurance, or depreciation make the actual-expense method more competitive.
Result: Higher actual costs can close the gap quickly and occasionally make the actual-expense method the stronger deduction.
How the mileage deduction comparison works
The calculator multiplies business miles by the IRS standard mileage rate for 2025 or 2026 and then adds parking and tolls to estimate the standard-mileage deduction.
It also multiplies your annual vehicle cost by the business-use percentage you entered, adds parking and tolls again, and compares the two methods on deduction size alone.
Business mileage FAQs
Use these answers to interpret the deduction comparison and the limits of the standard-rate shortcut.
Why are parking and tolls included in both methods here?
Because those costs are typically added on top of either the standard mileage method or the actual-expense method instead of replacing one method with the other.
Does the standard mileage method always stay available?
No. Eligibility can depend on how the vehicle was placed into service and whether you used the standard method early enough. The calculator compares deduction size, not method eligibility.
What is the break-even vehicle expense figure?
It is the annual total vehicle cost at which the actual-expense method would roughly match the mileage-rate deduction before parking and tolls, based on your business-use percentage.
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