Mobile Car Detailing Business Deductions: Supplies, Equipment, and Vehicle Expenses

By Yarik Yarosh, CPA ·September 5, 2026 ·3 min read

Written by Yarik Yarosh, CPA (US & Canada) September 5, 2026 · FL CPA license AC61704 · CPA Ontario

Mobile car detailing is one of the most vehicle-dependent service businesses. The detailer’s van, truck, or trailer IS the business: it carries the water tank, generator, extractor, polishers, and the full supply inventory to each job site. This creates a strong deduction profile where the vehicle, equipment, and supplies together can offset 40-60% of gross revenue in the early years.

✓Key takeaway

Mobile detailing deductions:

Supplies (ordinary business expense, deducted as used):

Wash soap, shampoo, all-purpose cleaner: $300-$800/year
Clay bars and decontamination products: $200-$500/year
Polishing compounds and pads: $500-$1,500/year
Ceramic coating products: $500-$2,000/year (high-margin service, significant supply cost)
Interior cleaners, leather conditioner, fabric protectant: $200-$600/year
Microfiber towels (high turnover item): $300-$800/year
Applicator pads, foam applicators: $100-$300/year
Tire dressing, trim restorer, glass cleaner: $200-$500/year
Odor elimination products: $100-$300/year

Equipment (Section 179 or de minimis safe harbor):

Dual-action polisher ($200-$600): de minimis safe harbor
Rotary polisher ($200-$400): de minimis safe harbor
Carpet extractor ($300-$1,500): de minimis safe harbor or Section 179
Wet/dry vacuum ($100-$500): de minimis safe harbor
Pressure washer ($300-$3,000): de minimis or Section 179
Steam cleaner ($1,000-$3,000): Section 179
Generator ($1,000-$5,000): Section 179
Water tank and pump system ($500-$2,000): Section 179
LED inspection lights ($50-$200): de minimis
Complete van or trailer buildout ($5,000-$30,000): Section 179

Vehicle:

The vehicle is the single largest asset and deduction
Work van or truck (GVWR over 6,000 lbs): full Section 179 with no luxury auto limitation
If the vehicle is used exclusively for business (common for a dedicated detailing van), 100% of costs are deductible
Actual expense method typically produces a larger deduction than standard mileage for detailing vans (fuel, maintenance, insurance, depreciation all deductible at business-use percentage)
Van wrap/graphics: deductible as advertising

Insurance:

General liability: $500-$1,500/year (covers damage to customer vehicles)
Garage keeper’s liability (if vehicles are kept at your location): $300-$800/year
Commercial auto insurance: deductible
Inland marine (covers equipment in transit): $200-$500/year

How do supply costs compare to revenue on a per-job basis?

Hypothetical example

Round numbers. A mobile detailer charges $200 for a full interior/exterior detail. They perform 6 details per day, 5 days per week, 50 weeks per year = 1,500 details. Revenue: $300,000.

Per-job supply costs:

Wash soap and chemicals: $3
Clay bar (amortized): $1
Polish compound and pads: $4
Ceramic spray sealant: $5
Interior cleaner and protectant: $3
Microfiber towels (replacement cost): $2
Miscellaneous (glass, tire, trim): $2
Total per-job supplies: $20 (10% of $200 price)

Annual supply cost: $20 x 1,500 = $30,000

Full deduction summary:

Supplies: $30,000
Vehicle (dedicated van, actual expense method):
- Depreciation/Section 179 (van cost $45,000, year 1): $45,000
- Fuel ($200/week): $10,000
- Insurance: $3,000
- Maintenance: $2,000
- Total vehicle: $60,000 (year 1 with Section 179)
Equipment: $5,000 (year 1 purchases)
Insurance: $2,500
Marketing: $3,000
Phone, software, booking system: $2,400
Home office (supplies storage, scheduling): $1,500

Total year-one deductions: $104,400 Net income: $195,600 Reasonable S-Corp salary: $60,000 S-Corp distributions: $135,600

Effective tax rate: approximately 10.1% (combining employer payroll taxes on salary + income tax on distributions with QBI deduction)

In year two, without the Section 179 on the van, total deductions drop to approximately $59,400, and the effective rate rises. This is why timing large equipment purchases is important for tax planning.

Illustrative numbers only, not a real client and not advice for your facts.

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Cite this page

Yarik Yarosh, CPA. "Mobile Car Detailing Business Deductions: Supplies, Equipment, and Vehicle Expenses." Blue Cloud CPA, September 5, 2026. https://bluecloudcpa.com/guides/mobile-detailing-deductions-supplies

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.