LLC Vehicle Deduction Guide — Standard Mileage vs. Actual Expenses, Section 179 (2026)

1. Track all business miles throughout the year The most important step happens throughout the year, not at tax time. Use a mileage-tracking app (MileIQ, Everlance, TripLog) or maintain a physical mileage log. Record: the date, starting and ending location, business purpose, and number of miles for every business trip. Do not record commuting miles (home to your primary office) — those are never deductible. If your home office qualifies as your principal place of business, all trips from home to client sites, vendors, or business locations are business miles. Record your odometer reading on January 1 and December 31 to establish total annual mileage.
2. Determine your vehicle's GVWR and identify which rules apply Look up your vehicle's Gross Vehicle Weight Rating (GVWR) on the driver's side door jamb sticker or in the owner's manual. This single number determines which deduction rules apply: (1) ≤6,000 lbs GVWR — passenger vehicles subject to §280F luxury auto depreciation caps. Maximum first-year depreciation is ~$12,200 (with bonus depreciation, 2024 figures). (2) >6,000 to ≤14,000 lbs GVWR (SUVs, large trucks) — not subject to luxury auto caps, but §179 deduction is capped at $28,900 for SUVs. Heavy trucks are not subject to the SUV §179 cap. (3) >14,000 lbs GVWR — heavy commercial vehicles; no luxury auto cap and no SUV §179 cap. Popular vehicles over 6,000 lbs GVWR: Ford F-150 (~7,050 lbs), Chevy Suburban (~8,500 lbs), Ram 1500 (~7,100 lbs), Mercedes GLS (~7,275 lbs), Tesla Model X (~6,768 lbs).
3. Choose your deduction method for the first year in service Standard mileage rate: multiply business miles × current IRS rate (67 cents/mile for 2024; verify 2026 rate at IRS.gov). Add parking fees and tolls paid for business trips (100% deductible separately). No depreciation tracking required. Best for high-mileage, lower-cost vehicles (older vehicles, high business-use percentage). Actual expense method: multiply business-use % by total vehicle costs (fuel + insurance + registration + maintenance + repairs + depreciation). Depreciation calculated via MACRS (5-year property for most vehicles), potentially combined with §179 and/or bonus depreciation. Best for expensive vehicles, SUVs over 6,000 lbs, and vehicles with a high purchase price relative to annual miles. Run both calculations before filing to compare. If this is the first year the vehicle is in service for business, you make the binding method election by the return due date.
4. Calculate Section 179 and bonus depreciation (actual expense method only) If using the actual expense method with a vehicle placed in service during the tax year, evaluate: (1) Section 179 expensing — deduct up to the purchase price × business-use% in year 1, subject to the annual §179 dollar limit ($1,160,000 for 2024) and the SUV cap ($28,900 for SUVs over 6,000 lbs and up to 14,000 lbs GVWR). §179 cannot create a business loss. (2) Bonus depreciation — applies to the remaining adjusted basis after §179. For 2026 (if the TCJA phase-down schedule holds): 20% of remaining basis. Check IRS guidance annually — Congress frequently acts to extend or modify bonus depreciation. (3) MACRS — depreciate remaining basis over 5 years using 200% declining balance method. Complete on Form 4562, Part I (§179) and Part II (bonus depreciation), which flows to Schedule C, line 13.
5. Handle mixed personal/business use and listed property rules Vehicles are 'listed property' under IRC §280F, meaning special recordkeeping and substantiation rules apply. If business use falls to 50% or less in any year: the vehicle must switch to straight-line MACRS depreciation for that year and all future years. Any accelerated depreciation previously claimed (§179, bonus, accelerated MACRS) must be recaptured as ordinary income in the year business use drops to or below 50%. If business use exceeds 50%, standard MACRS with §179 and bonus depreciation remain available. Track business-use percentage every year for the life of the vehicle's depreciation schedule.
6. Document and maintain records for IRS substantiation The IRS requires 'adequate records' for vehicle deductions: contemporaneous written evidence showing the business purpose, date, destination, and mileage of each trip. A mileage-tracking app export satisfies this requirement. Also maintain: the vehicle purchase documents (showing GVWR and purchase price), your business-use percentage calculation (business miles ÷ total miles for the year), and Form 4562 from each year you claimed depreciation. Vehicle records should be retained for the longer of: 3 years from the return due date, or the entire depreciation period plus 3 years (because basis errors discovered at disposition are retroactively corrected).

FAQ

Common questions

IRC §162 (Ordinary and necessary business expenses — vehicle costs). IRC §179 (First-year expensing of depreciable property — $1,160,000 limit for 2024; $28,900 SUV cap). IRC §168(k) (Bonus depreciation — TCJA phase-down schedule). IRC §280F (Luxury auto depreciation caps for vehicles ≤6,000 lbs GVWR; listed property rules). IRC §168 (MACRS — 5-year property class for most business vehicles). IRS Revenue Procedure 2024-21 (2024 luxury auto depreciation caps and lease-inclusion amounts — check applicable year). IRS Publication 463 (Travel, Gift, and Car Expenses). IRS Publication 946 (How to Depreciate Property). IRS Form 4562 instructions.

Direct filing portal: https://www.irs.gov/forms-pubs/about-form-4562