Glossary · Tax & Accounting
Actual Expenses vs Standard Mileage.
IRS allows two methods for deducting vehicle expenses: actual expenses (all costs) or standard mileage rate; truckers typically use actual expenses.
What it is
The IRS allows two methods for deducting business vehicle expenses. The standard mileage rate (2026: 67 cents per business mile) is the simpler method: multiply business miles by the rate, deduct the result. It bundles fuel, maintenance, depreciation, and most other vehicle costs into a single figure. The actual-expense method requires tracking every vehicle cost — fuel, maintenance, insurance, depreciation, repairs, interest on the equipment loan, license fees, IFTA, IRP — and deducting the business-use portion of each.
Trucks over 6,000 lbs GVWR cannot use the standard mileage method — they must use actual expenses. For commercial trucking, actual expenses is essentially the only legal option and also almost always the better method economically, because the standard mileage rate is calibrated for passenger vehicles and significantly undervalues commercial truck costs. The method election is generally irrevocable for the life of the vehicle once made.
Why it matters for trucking finance
For commercial truckers, actual expenses is the only legal option — standard mileage doesn't apply to vehicles over 6,000 lbs GVWR. The discipline of tracking every truck-related expense is essential for both tax purposes and business management — operators who don't track operational costs can't calculate true CPM and can't tell when a lane is unprofitable. Lenders evaluating owner-operators expect to see actual-expense Schedule Cs as a sign of operational maturity. The 67 cents/mile rate is irrelevant for Class 8 trucks — the real operating cost is closer to $1.80–$2.30 per mile.
Related terms
- Cost Per Mile (CPM) — Total operating cost divided by total miles driven; the diagnostic metric that defines whether a lane or contract is profitable.
- Schedule C — IRS Form 1040 Schedule C — Profit or Loss from Business; used by sole-proprietor owner-operators to report business revenue, expenses, and net profit.
- Mileage Log — Daily record of miles driven, route, purpose, and odometer readings; required for tax deduction support and IFTA reporting.
- MACRS Depreciation (MACRS) — Modified Accelerated Cost Recovery System — IRS depreciation method for business assets; semi trucks depreciate over 3 years on a 200% declining balance.
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