Cost-Based Pricing: Know Your True Costs First
You can't price for profit if you don't know what profit looks like.
Cost-based pricing starts with knowing exactly what each job costs you — not just supplies, but labor, vehicle expenses, overhead, and taxes. Only when you know your true costs can you set prices that guarantee profit.
The $200 Detail That Lost Money
A detailer charges $200 for a full interior/exterior detail. He thinks he's making good money. Let's do the math:
- Time on job: 3.5 hours
- Drive time: 45 minutes round trip
- Supplies used: ~$18
- Gas for the drive: ~$8
- Vehicle wear (mileage): ~$12
- Insurance (prorated): ~$6
- Software/subscriptions (prorated): ~$4
- Self-employment tax (15.3%): ~$31
- Income tax (~20% effective): ~$34
Total costs: $113
Actual profit: $87
Hours invested: 4.25 hours
Effective hourly rate: $20.47/hour
He thought he was making $200. He's actually making $20/hour — less than many retail jobs, with none of the benefits.
This is why cost-based pricing matters. You can't set profitable prices until you know what "profitable" actually means.
The Four Categories of Costs
1. Direct Costs (Per Job)
These costs happen every time you do a job:
- Supplies: Chemicals, towels, applicators, clay, polish, etc.
- Fuel: Gas to get to and from the job
- Mileage wear: Vehicle depreciation, tires, maintenance per mile
2. Labor Cost (Your Time)
Your time has value — even if you don't pay yourself a "wage."
- Working time: Hours actively detailing
- Drive time: Getting to and from jobs
- Admin time: Quoting, scheduling, invoicing, follow-up
If you want to earn $75,000/year working 40 hours/week, that's roughly $36/hour. Every hour you spend on a job needs to earn at least that.
3. Overhead (Fixed Monthly Costs)
These costs exist whether you work or not:
- Insurance: Liability, vehicle, health
- Software: CRM, booking, accounting
- Marketing: Website, ads, subscriptions
- Equipment depreciation: Polisher, extractor, pressure washer
- Phone/internet: Business communication
- Storage: If you rent space for supplies/equipment
4. Taxes
The costs most detailers forget:
- Self-employment tax: 15.3% of net profit (Social Security + Medicare)
- Income tax: Federal + state on your profit
Combined, taxes often eat 25-35% of your profit. Price like it.
Calculating Your True Job Cost
Step 1: Calculate Your Hourly Overhead
Add up your monthly overhead costs:
Insurance: $200/month
Software: $100/month
Marketing: $150/month
Equipment depreciation: $100/month
Phone: $50/month
Total monthly overhead: $600
Divide by monthly working hours (say, 160 hours):
Hourly overhead: $600 ÷ 160 = $3.75/hour
Step 2: Calculate Direct Costs Per Job
For a typical full detail:
Supplies (chemicals, towels, etc.): $15
Fuel (20 mile round trip): $6
Mileage wear ($0.30/mile × 20): $6
Direct costs: $27
Step 3: Calculate Labor Cost
Decide your target hourly rate. For $75K/year at 40 hrs/week: ~$36/hour
Detail time: 3.5 hours × $36 = $126
Drive time: 0.75 hours × $36 = $27
Admin time: 0.25 hours × $36 = $9
Labor cost: $162
Step 4: Add Overhead Allocation
Total job hours: 4.5
Hourly overhead: $3.75
Overhead allocation: 4.5 × $3.75 = $17
Step 5: Calculate Pre-Tax Total
Direct costs: $27
Labor: $162
Overhead: $17
Pre-tax minimum price: $206
Step 6: Add Tax Buffer
You'll pay ~30% in taxes on profit. To net $206, you need to charge:
$206 ÷ 0.70 = $294 minimum
At $294, you cover all costs, pay yourself $36/hour, and have money for taxes. Below $294, you're losing money somewhere.
The Simplified Formula
Minimum Price = (Direct Costs + Labor + Overhead) ÷ 0.70
The 0.70 accounts for taxes. Adjust based on your actual tax rate.
Supply Cost Tracking
Most detailers wildly underestimate supply costs. Track them properly:
Method 1: Per-Job Tracking
For a week, write down everything you use on each job. Measure chemical usage, count towels, track applicators. Average it out.
Method 2: Monthly Division
Track total monthly supply purchases. Divide by number of jobs.
Monthly supply spend: $450
Jobs completed: 25
Average supply cost: $18/job
Typical Supply Costs
- Basic wash/wax: $5-10
- Full interior/exterior detail: $15-25
- Paint correction (per stage): $10-20 in pads/polish
- Ceramic coating application: $50-200+ (product dependent)
Vehicle Costs for Mobile Detailers
Your vehicle is a business tool. It costs money to operate.
IRS Mileage Rate Method
The IRS standard mileage rate ($0.725/mile for 2026, per Notice 2026-10) covers gas, maintenance, depreciation, insurance. Simple to track — just log miles.
Actual Expense Method
Track actual costs: gas, oil changes, tires, repairs, insurance, depreciation. More complex but sometimes more accurate.
Quick Estimate
For pricing purposes, use $0.50-0.70 per mile as your vehicle cost. A 30-mile round trip costs $15-21.
What About Equipment?
Big purchases (polisher, extractor, pressure washer) should be depreciated over their lifespan:
Rupes polisher: $600
Expected lifespan: 5 years
Monthly depreciation: $600 ÷ 60 = $10/month
Extractor: $400
Expected lifespan: 4 years
Monthly depreciation: $400 ÷ 48 = $8.33/month
Add equipment depreciation to your monthly overhead.
The Cost Floor
Once you've calculated your true costs, you have a cost floor — the absolute minimum you can charge without losing money.
Your actual prices should be above this floor. How far above depends on:
- Market rates (Lesson 2.3)
- Value you provide (Lesson 2.4)
- Your desired profit margin
But you should never, ever price below your cost floor. That's not discounting — that's donating.
True Cost Calculator
Common Mistakes
→ Drive time is work time. A 45-minute drive each way is 1.5 hours of labor. Include it in your cost calculation or you're working for free.
→ Self-employment tax (15.3%) plus income tax can eat 25-35% of profit. Build a tax buffer into every price or face a painful surprise in April.
→ Track actual supply usage for a month. Most detailers are shocked to discover they use $15-25 per full detail, not the $5-10 they assumed.
→ Insurance, software, marketing — these costs exist even when you're not working. Allocate a portion to every job or they eat your profit.
→ Calculate your actual costs once. Create a simple formula. Use it for every quote. Gut feel is how detailers end up working for $15/hour.
This week, calculate your true cost for your most common service. Add up direct costs, labor (at your target hourly rate), overhead allocation, and tax buffer. Compare to what you're currently charging. Are you actually profitable?
Detaild tracks your revenue per job automatically. Combine this with your cost calculations to see true profit per job, not just revenue.
Create a simple cost sheet for your top 5 services. Know your cost floor for each. When quoting, you'll have confidence knowing exactly where your minimum is — and how much margin you're making above it.
Frequently Asked Questions
What hourly rate should I use for labor?
Work backwards from your income goal. Want $80K/year working 40 hrs/week for 50 weeks? That's $40/hour. This is your labor cost — the minimum your time is worth.
Should I charge for admin time?
Yes. Quoting, scheduling, invoicing, and follow-up take time. Estimate 15-30 minutes of admin per job and include it in your labor calculation.
How do I track supply costs if I buy in bulk?
Estimate per-job usage. If a gallon of APC costs $30 and lasts 20 jobs, that's $1.50/job. Do this for each major product and add them up.
What if my costs are higher than competitors' prices?
Then either your costs are too high (find efficiencies) or competitors are underpricing (and probably struggling). Don't race to the bottom — price for profit.
How often should I recalculate costs?
Review quarterly or when major costs change (gas prices, new equipment, insurance renewal). Your cost floor shifts over time.
Track Revenue Per Job
Detaild automatically tracks what you earn on every job. Combine with cost data to see real profitability.
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