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Which Job-Level Costs Matter Most for a Small Engine Repair Business?

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Unit Economics Research

What are the unit economics of a small engine repair shop?

A completed repair order is the most useful unit because its invoice can be matched directly to parts, technician time, payment cost, and a share of monthly shop overhead.

Revenue per completed repair order—
Contribution per completed repair order—
Contribution margin—
Operating profit per completed repair order—
Direct answer

What does the base case say about each completed order?

In the base case, a mixed service order produces positive contribution after parts, direct technician labor, and card fees, then absorbs its share of fixed shop costs.

Editable calculator

What changes when the repair-shop scenario changes?

Low, Base, and High change completed order volume, invoice mix, parts content, technician time, card fees, and fixed occupancy needs using evidence-bounded operating cases rather than uniform percentage multipliers.

Editable assumptions

What can you edit per completed repair order?

Change a displayed assumption to recalculate every result immediately.

Saleable completed repair orders in the modeled month. Counts display as integers.
Average revenue received for one completed repair order.
Materials, inventory, ingredients, parts, fulfillment, or direct purchased inputs for one completed repair order.
Labor that varies with delivery of one completed repair order.
Other costs that rise with each completed repair order, such as fees, packaging, utilities, or warranty.
Monthly cash fixed costs allocated across the displayed monthly volume.
Revenue decomposition

Where does one completed repair order go?

The bars use the same displayed inputs and scale to the largest current component.

Revenue$0.00
COGS$0.00
Labor$0.00
Other variable$0.00
Fixed allocation$0.00
Operating profit$0.00

Displayed monthly fixed costs: —. Bars redraw whenever the scenario or an input changes.

Scenario output
Contribution per completed repair order—
Break-even volume—
Operating margin—
Monthly operating profit—
Calculating…Scenario results are loading.
Unit definition

Why use a completed repair order instead of a labor hour?

The completed order captures flat-rate services, parts sold, diagnostics, and all technician time connected to one customer transaction, while a labor hour omits important invoice economics.

Completed order volume?

Seasonality and intake discipline determine how many jobs share rent and other fixed costs; spring and summer are commonly the busiest periods.

Equipment and service mix?

A handheld tune-up and a zero-turn mower service have very different tickets, parts baskets, and bench times, so mix can move both revenue and cost per order.

Technician time per order?

Diagnosis, disassembly, parts delays, and rework determine direct labor consumed; the wage benchmark should be replaced with the shop's fully loaded payroll cost.

Parts content and authorization?

Filters and plugs create small baskets, while carburetors, belts, batteries, and spindles raise invoice value and direct cost only when customers approve the work.

Shop occupancy burden?

A compact flex shop still carries rent, insurance, power, waste, communications, and administration before the first order is completed.

Payment method mix?

Card fees rise with the average invoice, while cash, check, or negotiated in-person processing could reduce this variable cost.

Scenario comparison

How should Low, Base, and High be compared?

Compare the cases as coherent operating months: slower low-ticket work, a steady mixed book, and a peak month with more complex equipment and added capacity needs.

Scenario Revenue COGS Labor Other variable Fixed Profit
Low $125.00 $22.00 $25.74 $3.93 $49.23 $24.10
Base $155.00 $35.00 $32.18 $4.80 $43.53 $39.49
High $190.00 $55.00 $41.19 $5.81 $43.00 $45.00

What does positive unit profit mean for an investor?

Positive operating profit per order indicates the modeled month covers direct and allocated fixed operating costs, but it does not measure cash flow, startup investment, debt service, taxes, or owner distributions.

Why is a full financial model still necessary?

A full model connects seasonal monthly demand to hiring, inventory, tools, lease deposits, capital spending, working capital, financing, taxes, and cash runway that per-order economics cannot capture.

Research sources

Which sources support this Small Engine Repair benchmark?

These direct sources support the selected unit, revenue, cost structure, scale, and scenario bounds.

  • U.S. Bureau of Labor Statistics — Small Engine Mechanics — Occupational Outlook Handbook

    The annual wage divided by 2,080 hours gives about $22.38 per scheduled hour before payroll burden and supports seasonal variation in completed orders. The wage survey excludes self-employed workers and varies by location, experience, specialization, overtime, benefits, and employer type.

    Open source
  • Dad Fix It — Service Price Sheet — Effective 2026

    The menu bounds a blended completed-order invoice and shows that parts are additional, making labor and parts separately traceable to a work order. One regional provider may price below dealer rates, and the menu does not reveal job mix, actual billed hours, declined estimates, sales tax, or wholesale parts cost.

    Open source
  • CRE Equipment Repair — Shop Labor Rates as of October 22, 2025

    This rate provides an upper direct-market anchor for jobs with commercial equipment or greater complexity. The source is a single shop rate and does not disclose utilization, parts revenue, discounts, geography-adjusted demand, or average job duration.

    Open source
  • Insureon — How Much Does Auto Repair Business Insurance Cost?

    The model uses $149 per month as a shop insurance anchor and treats additional coverage needs as a local sensitivity rather than stacking every policy automatically. Auto repair risks are not identical to small-engine repair, and premiums vary by property value, payroll, location, limits, deductibles, and claims history.

    Open source
  • LoopNet — Georgia Warehouses for Rent and Lease

    A roughly 1,500-square-foot shop at $13 to $21.60 per square foot annually implies base rent of about $1,625 to $2,700 per month before lease extras. Listings can change, asking rent is not executed rent, many spaces are larger than the model shop, and operating expenses, zoning, deposits, and build-out are not consistently disclosed.

    Open source
  • U.S. Energy Information Administration — 2024 Average Monthly Bill — Commercial

    The scenario allowances sit below the all-commercial average to reflect a small 1,500-square-foot repair shop rather than the average commercial customer in the survey. The EIA average mixes many business sizes and load profiles; a small shop's HVAC, compressors, lighting, customer charges, water, and waste fees can differ materially.

    Open source
  • Stripe — Standard Payments Pricing and Fees

    The calculation applies the published percentage and transaction fee to each scenario's average invoice as a transparent variable-cost proxy. Actual shops may accept cash, checks, or lower-cost in-person processing, while manually entered, international, or disputed transactions can cost more.

    Open source
FAQ

What else should you know about Small Engine Repair unit economics?

Does one completed order always equal one equipment item?

Usually, but the operating system should define the unit consistently when one customer brings multiple machines or when one machine generates separate authorized work orders.

Why are parts treated separately from technician labor?

Published service menus commonly state that parts are additional, so separating parts from labor improves pricing, purchasing, and contribution analysis.

How should owner labor be handled in this calculator?

Use a replacement wage for owner repair time so contribution is not overstated, then keep owner distributions and financing outside operating unit cost.

What is the most important local input to replace?

Replace the average invoice and monthly completed-order count first, then use actual technician hours, parts cost, rent, utilities, and insurance from the target shop.

Does the calculator include pickup and delivery revenue?

No. Pickup and delivery are excluded from the selected unit so vehicle cost and travel time are not mixed into a drop-off repair-order benchmark.

How can you turn this benchmark into a full forecast?

A full model connects seasonal monthly demand to hiring, inventory, tools, lease deposits, capital spending, working capital, financing, taxes, and cash runway that per-order economics cannot capture.

Explore the Small Engine Repair Financial Model