Section 179 Vehicle & Heavy Truck Deduction Calculator
Under Section 179 of the Internal Revenue Code (IRC), business owners can write off up to 100% of the purchase price of qualifying work vehicles, heavy trucks, and commercial equipment acquired and placed into service during the tax year, rather than depreciating them over multiple years.
This browser-based us-section-179-truck-calculator allows business owners, contractors, and fleet managers to evaluate statutory IRS tax deductions, heavy SUV $32,000 caps, 100% bonus depreciation rates, and net cash tax savings instantly and privately without transmitting financial records.
Current IRS Vehicle Tax Deduction Thresholds Matrix
The tax treatment of a business vehicle depends on its Gross Vehicle Weight Rating (GVWR), vehicle construction type, and percentage of business usage:
| Vehicle Classification | GVWR Weight Threshold | Section 179 Expensing Limit | Bonus Depreciation & MACRS |
|---|---|---|---|
| Heavy Truck / Cargo Van / Work Vehicle | Over 6,000 lbs GVWR | Up to full annual Section 179 limit ($2,560,000 cap) | 100% Bonus Depreciation eligible on remaining basis |
| Heavy SUV / Passenger Crossover | 6,001 - 14,000 lbs GVWR | Statutory Heavy SUV Cap ($32,000) | 100% Bonus Depreciation applies to remaining basis |
| Light Passenger Vehicle | 6,000 lbs GVWR or less | Subject to IRS Luxury Auto Limits ($20,300 max Year 1) | Includes $8,000 bonus depreciation allowance |
Important Statutory Qualification Guidelines
- Macro Section 179 Limit ($2,560,000): The overall Section 179 expensing cap allows businesses to write off up to $2,560,000 of qualifying purchases, with a dollar-for-dollar phase-out threshold starting at $4,090,000 in total equipment acquisitions.
- Heavy SUV Cap ($32,000): Vehicles categorized as passenger SUVs between 6,001 and 14,000 lbs GVWR face a specific Section 179 deduction limit of $32,000. However, any cost basis exceeding $32,000 is eligible for 100% Bonus Depreciation.
- More Than 50% Business Use Requirement: To qualify for Section 179 or Bonus Depreciation, the vehicle must be used more than 50% for qualified business purposes. If business use drops to 50% or lower, both Section 179 and Bonus Depreciation drop to $0.00, forcing a fallback to pro-rated straight-line MACRS depreciation.