Trade Business KPIs UK — The Key Metrics Every Trade Business Owner Should Track (2026)

Most trade businesses run on gut feel. And for a good while, that works. You know your best customers, you have a rough idea of what the week looked like, and your bank balance tells you whether things are broadly OK. When you're a one-person operation doing work you've been doing for fifteen years, instinct is a reasonable guide.

The problem comes when the business starts to grow — or when you want it to. Take on a second van, hire a mate, start quoting commercial work — and suddenly the gut feel stops working. You're too busy to notice that your margins have quietly compressed. You don't realise one lead source is costing you five times more per customer than another. You can't tell whether the quieter month was a blip or the start of a trend.

You can't improve what you don't measure. The good news: you don't need an accounting degree to track the numbers that matter. There are five or six metrics that tell you almost everything you need to know about how a trade business is performing — and all of them are calculable with information you already have. Here they are.

1. Revenue per job (average job value)

Formula: total revenue ÷ number of jobs completed in the period

This is one of the most revealing numbers in a trade business. A low average job value means you're completing a large number of small jobs — which sounds productive but is often one of the least profitable ways to operate. Every job carries overhead regardless of size: the time to quote, schedule, travel to site, invoice, and chase payment is roughly the same whether the job value is £200 or £2,000. The margin on that admin is radically different.

If your average job value is £350, you might need to complete 350 jobs a year to hit £120,000 revenue. At an average value of £1,200, you need around 100. The second scenario involves dramatically less scheduling pressure, fewer customer interactions, and far less admin — at the same revenue level.

How to improve it: introduce a minimum call-out fee for small reactive jobs; upsell service agreements that convert single transactions into recurring revenue; actively target larger project work alongside your standard day-to-day jobs. Track average job value monthly and watch the trend.

2. Quote win rate

Formula: quotes won ÷ quotes sent × 100

Your win rate tells you whether your pricing and follow-up process are calibrated correctly. The healthy range for most domestic trade businesses is 40–60%. Commercial and public sector tendering is lower by design — winning 20–30% of formal tenders is often good performance in that environment.

The two danger zones are worth understanding clearly:

• Win rate above 70%: you're probably underpricing. Customers who accept almost every quote you send aren't doing you a favour — they're taking advantage of your reluctance to charge what the work is worth. A healthy number of declines is a sign your pricing reflects your value.
• Win rate below 30%: either you're overpriced for your market, or your follow-up process is letting you down. Most trade businesses send a quote and never follow up. A single WhatsApp or call three days after sending can lift win rates by 10–15 percentage points on its own.

Track win rate separately by job type and lead source. You may find your win rate on domestic bathroom renovations is 65% but on reactive callouts it's 25% — which tells you something useful about where to focus and how to price.

3. Gross margin per job

Formula: (revenue − direct costs) ÷ revenue × 100

Direct costs are the expenses that vary with the job: materials, direct labour (what you pay yourself or your operatives for the time on site), plant hire, and any subcontractors brought in specifically for that job. Overheads — van, insurance, phone, software — are not included here. Gross margin is about the profitability of the job itself, before fixed costs.

Target ranges vary significantly by trade:

• Electrical: 45–60% gross margin
• Plumbing and heating: 40–55% gross margin
• General building: 25–40% gross margin
• Specialist trades (fire, access control, EV charging): 50–65% gross margin

The real power of tracking gross margin per job — rather than just overall margin — is that it reveals which work types are most profitable. You might find that your boiler installations run at 55% margin but your emergency callouts run at 30% because reactive work involves high travel time and uncertain material costs. That knowledge shapes where you invest your marketing budget and which jobs you prioritise quoting.

4. Technician utilisation rate

Formula: billable hours ÷ available hours × 100

This metric measures how much of your available working time is actually generating revenue. For a sole trader working a 45-hour week, “available hours” might be 45. If 30 of those are spent on billable jobs, your utilisation rate is 67% — reasonable, though with room to improve.

The achievable target for most trade businesses is 65–75%. Getting above 80% consistently is difficult because some non-billable time is genuinely necessary: quoting, travel between jobs, materials collection, admin, customer calls. If you're claiming 90% utilisation, you're probably not accounting for all your non-billable time honestly.

Below 60% is the warning zone. It typically means one of three things: too much time spent on quoting jobs that don't convert; excessive travel between jobs due to poor scheduling; or administrative tasks that are eating into your working day. A basic time log — even just noting on your phone what you spent each hour on — will identify the culprit within a week.

For businesses with employees or subcontractors, track utilisation per person. One underperforming operative dragging down average utilisation is a management problem. Consistent low utilisation across the board is a workload problem.

5. Debtor days (average payment time)

Formula: (total outstanding invoices ÷ annual revenue) × 365

Also called Days Sales Outstanding (DSO), this tells you on average how long it takes customers to pay you after you send an invoice. Target benchmarks: under 30 days for domestic customers, under 45 days for commercial clients.

High debtor days kills cash flow even in profitable businesses. If you're completing £10,000 of work every month but customers are taking 60 days to pay, you're always funding around £20,000 of completed work out of your own pocket. That's cash you could be using for materials on the next job, or just sitting in your account giving you breathing room.

How to reduce debtor days:

• Require a deposit on larger jobs — 25–50% upfront is standard and expected by most domestic customers
• Invoice on the day of completion, not at the end of the week or month
• Set payment terms of 14 days rather than 30 on domestic work — many customers will pay faster if terms are clear
• Follow up unpaid invoices automatically at 7 days, 14 days, and 21 days — don't wait until they're 30 days overdue before chasing
• Accept card payments on site — a customer who can pay before you leave is a customer who definitely pays that day

6. Customer acquisition cost (CAC)

Formula: total marketing spend ÷ new customers won in the same period

If you spent £600 on Checkatrade in March and acquired 8 new customers from it, your CAC from that channel is £75. If you spent £400 on Google Ads and acquired 3 customers, your CAC is £133. Those two numbers tell you something very specific about where your marketing budget is working.

Most trade businesses find that referrals have a near-zero CAC — a WhatsApp message to a satisfied customer asking for an introduction costs nothing and often generates some of the highest-quality leads. Yet most trade businesses spend almost no deliberate effort on generating referrals, preferring instead to pay for leads on platforms where they're competing on price against every other local tradesperson.

Track where every enquiry came from. Ask every new customer directly: “How did you find us?” Record the answer. Within three to six months you'll have clear data on which channels generate the most customers, the most valuable customers, and at what cost. That data will tell you exactly where to shift your marketing budget.

7. Revenue per marketing channel

CAC tells you the cost side of the marketing equation. Revenue per channel tells you the value side. Some channels generate high volumes of small, low-margin jobs. Others generate fewer enquiries but from customers who spend more and stay longer.

The customer who found you through a referral from a neighbour is statistically more likely to trust your quote, accept your pricing without negotiation, pay on time, and refer you to their own network. The customer who found you on a price comparison platform may be shopping on cost alone and difficult to retain.

Track not just the number of customers per channel but the average job value and margin by channel. You may find that one lead source generates twice the job value of another, even at the same volume. That fundamentally changes the ROI calculation and should drive where you invest your marketing effort.

Setting up a simple KPI dashboard

You don't need expensive software to start. A Google Sheet updated once a month with six to eight numbers is transformative compared to tracking nothing. Create one tab per month. Record: revenue per job, win rate, gross margin, utilisation, debtor days, CAC, and revenue by channel. Add your total revenue and cash position. That's your dashboard.

The rule is: review it at month-end and ask two questions for each metric. What changed compared to last month? Why? If you can answer those questions consistently, you have genuine visibility of your business.

Software makes this faster. Accounting tools like Xero surface cash position, debtors, and revenue automatically if you invoice through them. Job management software like Trade2Base links revenue and margin to individual jobs and lead sources, so most of these numbers are calculated for you — no manual work required. The best system is the one you'll actually use consistently, so start simple and add complexity only when you feel the limits of what you have.

Six numbers tracked monthly beats a complex system used once and abandoned. The businesses that grow most confidently are the ones where the owner can answer, off the top of their head, what their current win rate is, what their average job value was last month, and what their debtor days are running at. That knowledge doesn't require a finance team. It requires a habit. Start this month.