Job Profitability CalculatorKnow Your Profit on Every Job
Stop guessing whether a job made money. Elec-Mate's Job Profitability Calculator tracks every cost — materials, labour, travel, overheads — and shows you the true profit margin and profit per hour worked.
What Is Job Profitability and Why Does It Matter?
Job profitability is the difference between what you charge for a job and what it actually costs you to deliver it. It sounds simple, but most electricians do not calculate it accurately — and many do not calculate it at all. They finish a job, deposit the payment, and assume they made money because their bank balance went up. But without tracking every cost, you cannot know whether a specific job was profitable, breakeven, or a loss.
The formula is straightforward: Total Revenue - Total Costs = Gross Profit. The challenge is capturing all the costs. Total costs include direct costs (materials purchased for the job, labour hours at your true rate, subcontractor costs) and indirect costs (a share of your van, insurance, tools, certification body fees, and other overheads). Most electricians capture the materials and their time on site, but forget about travel time, procurement time (visiting the wholesaler), admin time (writing the quote, producing the certificate, sending the invoice), waste, consumables, and the overhead allocation.
The result of not tracking profitability is that electricians unknowingly subsidise unprofitable jobs with profitable ones. A domestic rewire might look like it pays well at £4,500, but when you account for 5 days of labour, 2 return visits for snagging, 3 hours of testing and certification, 2 hours of procurement, travel costs, and material wastage, the actual profit might be £800 — or £16 per hour worked. Meanwhile, a 2-hour EICR inspection at £180 might yield £120 profit — £60 per hour worked. Without tracking, you would never see this disparity.
Elec-Mate's Job Profitability Calculator is designed to make this tracking simple and automatic. It is one of 14 specialist business calculators in the Business Hub, alongside tools for hourly rate calculation, cash flow planning, tax estimation, VAT scheme comparison, and quote variance tracking. Together, they give you a complete financial picture of your electrical business.
How to Calculate Job Profitability Step by Step
Step 1 — Material costs: List every material used on the job, including the items you do not normally think about — cable clips, gland kits, fixings, earth sleeving, labels, fire hoods, and sealant. Add a wastage factor of 5% to 10% for cable and 3% to 5% for accessories. Include delivery charges if applicable. Use trade prices, not retail — your supplier invoices are the source of truth, not the wholesaler website.
Step 2 — Labour hours: Include all time spent on the job, not just the hours on site. This means travel time (both ways, every visit), time spent at the wholesaler, time spent writing the quote and producing the certificate, time testing, and any return visits for snagging or remedial work. Multiply the total hours by your true hourly rate (which should include your desired salary plus a contribution to overheads — see the Hourly Rate Calculator for how to work this out).
Step 3 — Overhead allocation: Your fixed costs exist whether you are on a job or not. They include van costs (lease or depreciation, fuel, insurance, MOT, road tax, servicing), tool and test equipment costs (purchase, calibration, replacement), insurance (public liability, professional indemnity, employer's liability if you have staff), certification body fees (NICEIC, NAPIT, ELECSA), accounting fees, phone and internet, website and marketing, and training. Calculate your total annual overheads, divide by your annual billable hours, and multiply by the hours spent on this job.
Step 4 — Calculate profit: Add material costs + labour costs + overhead allocation = total cost. Subtract total cost from the quoted or invoiced price to get gross profit. Divide gross profit by the invoiced price and multiply by 100 to get your gross margin percentage. Divide gross profit by total hours worked to get profit per hour — this is the number that really tells you whether the job was worth doing.
Common Pricing Mistakes Electricians Make
Forgetting travel time: A job 45 minutes from your base costs you 1.5 hours of travel per visit (both ways). Over 3 visits, that is 4.5 hours of unbilled time. At £45 per hour, that is over £200 of lost income — enough to turn a profitable job into a breakeven one.
Underpricing materials: Using retail prices instead of trade prices is one mistake, but the more common one is forgetting consumables. Cable clips, earth sleeving, labels, fire barrier compound, expanding foam, fixings, and gland kits might only cost £20 to £40 per job, but over 200 jobs a year that is £4,000 to £8,000 of unrecovered costs.
Not accounting for call-backs: Even the best electricians get call-backs. A snagging visit to tighten a connection, replace a damaged faceplate, or adjust a light fitting typically takes 1 to 2 hours including travel. If you get called back on 10% of jobs, and each call-back costs you £80 in time and fuel, that is a significant hidden cost that should be built into your pricing.
Ignoring certification time: Testing a domestic installation properly takes 1 to 3 hours depending on the size and complexity. Producing the EICR, EIC, or Minor Works certificate, uploading it to your certification body portal, and emailing it to the client takes another 30 to 60 minutes. If you are not pricing this time into the job, you are doing it for free.
Confusing markup with margin: A 30% markup on a £1,000 cost gives a price of £1,300 and a profit of £300 — but that is a 23% margin, not 30%. If you are aiming for a 30% margin, you need a 43% markup. Elec-Mate's calculator shows both figures so you can price accurately regardless of which method you use.
How Elec-Mate's Job Profitability Calculator Works
Elec-Mate's calculator is built specifically for electrical contractors. It understands the cost structure of electrical work and prompts you for every relevant input so nothing is missed. Enter the job details — description, quoted price, job type (rewire, board change, additional circuits, testing, EV charger, commercial fit-out) — and the calculator guides you through capturing every cost.
Material costs can be entered manually or pulled from the built-in material pricing database with current UK trade prices. The calculator automatically applies your wastage percentage and includes delivery charges. You can add multiple material categories — cable, accessories, protective devices, containment, fixings, and sundries.
Labour costs are calculated from the hours worked multiplied by the operative's rate. The calculator supports multiple operatives at different rates — qualified electrician, improver, apprentice, labourer — reflecting the reality of larger jobs. Travel time and admin time are tracked separately so you can see their impact on profitability.
Overhead allocation uses the overhead percentage you set in your business profile. This figure is calculated by the Hourly Rate Calculator (another tool in the Business Hub) and represents the hourly cost of running your business beyond direct job costs.
The output is a comprehensive profitability report showing total costs, gross profit, gross margin percentage, net margin, profit per hour worked, and a comparison against your target margin. If the job falls below your target, the calculator shows you what price you should have quoted to achieve it — information you can use to improve future pricing.
Key Features of the Job Profitability Calculator
Purpose-built for UK electricians. Every cost captured, every margin calculated, every job analysed.
Complete Cost Breakdown
Enter materials, labour hours, travel, waste, and overheads. The calculator totals every cost so nothing is missed — no more "I forgot to include the…
Markup & Margin Calculator
Set your desired markup percentage or target margin. The calculator shows the difference between the two and helps you price to hit your profit target…
Profit Per Hour Worked
See your actual profit per hour of time invested — including travel, admin, quoting, and snagging.
Actual vs Quoted Comparison
After the job, enter actual costs and compare against the original quote. Identify where you over or underestimated and improve future pricing accuracy.
Job Type Profitability Trends
Track profitability across different job types — rewires, board changes, testing, EV chargers.
Hidden Cost Alerts
The calculator flags common hidden costs that electricians forget — travel time, call-back allowance, certification time, waste percentage…
Why Electricians Choose Elec-Mate for Job Profitability
Elec-Mate is not a generic business tool — it is built exclusively for UK electricians. The Job Profitability Calculator is one of 14 business calculators in the Business Hub, sitting alongside 56 technical calculators (cable sizing, voltage drop, fault current, Zs values, and more), 16 certificate types ( EICR, EIC, Minor Works, EV charger, and more), 8 Elec-AI agents with 12 AI tools, and 46+ training courses. Everything works together in one platform. Quotes from the quoting tool feed directly into profit tracking, giving you real margin data per job.
The profitability data you generate feeds into your business reports, helping you spot trends over time. You can see which job types are most profitable, which clients generate the best margins, and which areas of your business need attention. Over 430 UK electricians already use Elec-Mate to run more profitable businesses — from sole traders doing domestic work to companies managing multiple operatives on commercial projects.
Compliance is built in: all calculations reference BS 7671:2018+A4:2026 (the 18th Edition with Amendment 4, issued July 2024) where relevant, and the platform is fully GDPR compliant. Your financial data is encrypted in transit and at rest, stored securely on UK-region servers, and never shared with third parties.
Track Every Job's Profit — Built for UK Electricians
Elec-Mate's Job Profitability Calculator is part of the complete business hub. Quote, invoice, track profits…
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Frequently Asked Questions
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Should I charge for travel time?
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What is profit per hour worked and why does it matter?
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