Model your RV repair shop's monthly profit from job volume, labor, parts markup, and overhead — a complete net calculation in under a minute.
Every RV that rolls into the bay pays you twice — once for the wrench, once for the part — and most shop owners quietly give away the second one. Mark a $180 parts order up 40% when it could carry 55%, do that across 95 jobs a month, and you have handed back $2,500 that cost you nothing to earn. This calculator splits labor and parts into separate revenue lines, runs your jobs per week, labor charge, parts cost, and markup, then subtracts rent, wages, and overhead so you can see exactly where the margin is — and where it is leaking.
Parts markup is the unique lever in this model. Unlike most service businesses, RV repair shops buy parts at wholesale and resell them at a markup, and that markup is a significant profit center when managed correctly. The calculator makes that contribution visible alongside labor revenue so you can see which side of the business is driving your margin.
Labor and parts: two revenue streams in every RV repair job
Every job generates two revenue lines: the labor charge and the parts revenue. Average Labor Per Job is what you bill for technician time on a typical job. Average Parts Per Job is the cost of parts consumed, and Parts Markup (%) is the percentage above cost at which you sell those parts to the customer. A 50% markup on $180 in parts cost generates $270 in parts revenue — the $90 margin on parts is pure gross profit.
Monthly gross revenue is then the sum of both streams across your total monthly job count. A shop completing 22 jobs per week on 4.3 working weeks at $320 average labor and $270 average parts revenue (after markup) generates roughly $56,600 in monthly gross. That combined number is what goes to work on covering your fixed costs.
The parts markup rate varies by shop philosophy and parts category. Consumable parts and commodity components (bearings, filters, belts) often carry 40–60% markups. Proprietary manufacturer parts or large structural components may carry lower markups because the customer can check pricing. A blended markup rate of 45–55% is common for well-run RV repair operations. If your markup is below 35%, it is worth reviewing whether you are leaving margin on the table.
Interpreting jobs per week for an RV shop
Jobs per week varies significantly by RV type. A slide-out motor replacement or refrigerator service might be a half-day job. Full awning replacements or appliance swaps can take a full day. Generator service, roof resealing, and slideout track work are multi-day jobs. When entering Jobs Per Week, use your completed jobs count rather than started jobs — a job that takes three days to complete is one job for this model's purposes.
RV repair is highly seasonal. In most markets, spring through early fall drives 70–80% of annual revenue. Winter months may see shops operating at 30–50% of peak capacity. Running the calculator at peak-season and off-season volumes gives you a realistic annual income range and helps you plan staffing decisions for each season separately.
The annual scheduling pattern also affects hiring strategy. A shop with one technician running 18 jobs per week in peak season and 8 per week off-season faces a staffing cost that is fixed while revenue swings widely. Modeling both seasons in the calculator shows the off-season cash flow gap and informs whether a second technician makes sense year-round or only on a seasonal basis.
Fixed costs in an RV repair shop: what eats the gross margin
Monthly Rent is often the dominant fixed cost. RV repair requires large bay doors, significant floor space for vehicles that are 20–40 feet long, and adequate outdoor or lot space for staging and testing. A shop in a suburban industrial park with 3,000 square feet of bay space might pay $3,500–$6,000 per month. Urban or high-traffic markets push that higher.
Employee Wages covers all technician and front-office staff pay. For a one-technician shop with a part-time service writer, this might run $5,500–$8,000 per month. A two-technician shop with a full-time service advisor often carries $12,000–$18,000 in monthly wages. This cost does not flex with job volume — it is the fixed commitment that drives your minimum revenue requirement.
Monthly Overhead captures everything else: liability and garage keeper insurance (critical for a shop storing customers' large assets), diagnostic equipment and tool costs, parts inventory software, a telephone and scheduling system, and cleaning and waste disposal. RV shops with paint and body capabilities carry additional ventilation and materials costs. A realistic overhead budget for a typical RV service shop runs $1,500–$3,500 per month excluding rent and wages.
The parts markup opportunity most shops underutilize
Many RV repair shops undercharge for parts because they are nervous about customer price comparisons. But consider: the customer chose your shop to do the repair, not to source their own parts. Your markup covers carrying cost, ordering time, the risk of ordering the wrong part, and the convenience of not making the customer hunt for parts that often are available only through specialty distributors.
Test the impact in the calculator: raise Parts Markup from 40% to 55% while holding jobs per week and average parts cost constant. On $180 average parts cost per job and 95 jobs per month, a 15-point markup increase generates an additional $2,565 in monthly gross — essentially free money added to the bottom line without a single additional job or labor hour. The operators who price parts confidently tend to keep more of their gross margin.
Transparency helps. A parts invoice that shows OEM part number, sourcing, and a clear markup line is much easier to defend than a mystery line item. Many customers accept a reasonable markup readily when the work is trusted and the sourcing is explained.
Break-even job count and what it tells you
Once your fixed costs are loaded, you can back into your minimum monthly job count. Take total monthly fixed costs (rent plus wages plus overhead) and divide by your contribution margin per job (average labor plus markup-adjusted parts revenue minus variable cost per job). For most RV shops, contribution margin per job runs $350–$550. At $10,000 in fixed monthly costs and a $420 contribution margin, you break even at roughly 24 jobs per month — less than 6 per week.
That breakeven number is a management tool. When a slow week produces only 4 jobs instead of 6, you know exactly how far below your cost floor you are running. When a strong week hits 9 jobs, you know what that is worth in excess margin. The difference between guessing and knowing that number is what this model is built for. Save the model free and run it at the start of each season — peak versus off, with and without a second tech — so you are never guessing at the hire decision.
How to use it
- Enter Jobs Per Week based on completed jobs from your last three months of invoices.
- Set Avg Labor Per Job to the mean labor charge on a typical completed job.
- Enter Avg Parts Per Job as the mean cost (not selling price) of parts consumed per job.
- Set Parts Markup (%) to your actual markup rate above cost.
- Fill in Monthly Rent, Employee Wages, and Monthly Overhead, then read net profit and adjust markup or volume to test scenarios.
Who it's for
- RV shop owner evaluating a parts markup increase — Raises parts markup from 40% to 50% and checks net profit improvement before updating the shop's parts pricing policy.
- Solo technician going independent — Models a 12-job-per-week starting volume against startup rent, minimum overhead, and no-employee labor to find the minimum viable schedule for profitability.
- Shop owner adding a second technician — Doubles jobs per week, adds $6,000 in monthly wages, and checks whether the gross revenue increase justifies the hire at current labor and parts rates.
- RV repair business planning for off-season — Reduces jobs per week from 18 to 7 to model January revenue against fixed costs, identifying the cash reserve needed to cover the seasonal dip.
- Shop owner benchmarking labor rates — Raises Avg Labor Per Job from $280 to $340 to reflect a rate increase and checks net profit improvement across peak-season volume.
Key terms
- Parts markup
- The percentage added above parts cost when selling parts to customers — a direct margin contributor separate from labor revenue.
- Average labor per job
- The mean billable labor charge per completed repair job, before parts revenue.
- Contribution margin per job
- Revenue from a single job minus variable costs — what each job contributes toward covering fixed costs and generating profit.
- Garage keeper liability
- Insurance coverage protecting a repair shop against damage to customers' vehicles while in the shop's care, custody, or control.
Frequently asked questions
Should I include parts cost or parts revenue in Avg Parts Per Job?
Enter the parts cost — what you paid the supplier — not the selling price to the customer. The calculator applies the Parts Markup percentage to calculate selling price and then adds the markup gain to revenue. Entering the selling price instead would double-count the markup.
What is a typical parts markup for an RV repair shop?
Most independent RV repair shops mark up parts 40–60% above cost. High-demand OEM parts or dealer-exclusive components often support the upper end of that range. Commodity parts that customers can easily price-check online may be marked up more conservatively. A blended average of 45–55% is common for a mixed-work shop.
How do I handle insurance jobs that pay differently than customer-pay jobs?
Insurance-paid repair jobs often have negotiated labor and parts rates that differ from retail customer-pay pricing. If a significant share of your revenue is insurance work, use a blended average job labor and parts value that reflects the mix. Alternatively, model insurance and customer-pay jobs separately and combine the totals.
What should go in monthly overhead for an RV shop?
Garage keeper liability insurance, tool and equipment maintenance, parts inventory software, diagnostic scanner subscriptions, shop consumables (cleaning supplies, rags, lubricants), and any marketing costs. For a shop of average size, this number commonly runs $1,500–$3,500 monthly excluding rent and wages.
Can this model work for a mobile RV repair operation?
Yes. A mobile operation has minimal rent (enter a small storage or home office allocation) and high vehicle costs. Move vehicle fuel and maintenance from the overhead line to a visible part of your input by adding it to your overhead total. The core labor-plus-parts logic works identically for mobile operations.