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Section 179 Business Vehicle Tax Estimator

Calculate first-year write-offs, heavy vehicle exemptions, and cash tax reduction

Instructions: Commercial Vehicle Write-Off Guidelines

  1. Weight Rating (GVWR): Check the manufacturer VIN safety label on the driver's door jamb. Vehicles over 6,000 lbs GVWR qualify for significantly higher expensing limits than passenger sedans.
  2. Business Use Requirement: The vehicle must be driven over 50% for verifiable business purposes to qualify for Section 179 and bonus depreciation.
  3. SUV vs. Work Truck: Heavy SUVs (6,000–14,000 lbs) carry a Section 179 cap of $32,000. Cargo vans and pickup trucks with a cargo bed of at least 6 feet are exempt from the SUV limit.

Vehicle Acquisition Inputs

Must exceed 50% to claim expensing.
Federal bracket + state income tax rate.

First-Year Tax Impact

Depreciable Business Basis $65,000
Section 179 Deduction $65,000
Bonus Depreciation Applied $0
Total First-Year Deduction $65,000
Net Tax Cash Reduction
$22,750
Effective Net Asset Cost $42,250
Audit Protection Reminder
Maintain an IRS-Compliant Mileage Log

Section 179 audits require contemporaneous logs proving business percentage. Ensure every business trip is digitally documented.

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