The field service KPIs that matter for UK trades and service firms: how to measure each one, what a good number looks like, and where the data should come from.
The field service KPIs worth tracking are the ones that show whether you win enquiries, finish jobs properly the first time, fill your diary and get paid. For a small trades or service business that comes down to nine numbers, and you can work out most of them from records you already keep, as long as those records live in one place.
Most guides on this topic are written for large service organisations with call centres and dispatch teams. This one is for a plumber with two vans, an installer with a growing team, or a cleaning firm juggling a dozen regular sites. We have kept the list short, the formulas plain and the targets honest.
TL;DR
- Track nine numbers, not fifty: enquiry response time, quote conversion, first-time fix rate, jobs per day, utilisation, job margin, time to invoice, collection rate and customer feedback.
- Benchmarks from big service firms are a guide only. Your best comparison is your own results by job type, month on month.
- Money KPIs (job margin, time to invoice, collection rate) usually move profit fastest.
- You can only measure what you record. If enquiries, quotes, jobs and invoices sit in separate places, the numbers will be guesswork.
- Review the nine once a month, pick one to improve, and leave the rest alone until it moves.
Table of Contents
- What a KPI is for in a trades business
- 1. Enquiry response time
- 2. Quote conversion rate
- 3. First-time fix rate
- 4. Jobs completed per day
- 5. Technician utilisation
- 6. Job-level margin
- 7. Time to invoice
- 8. Collection rate and days to get paid
- 9. Customer feedback after the job
- The nine at a glance
- Our view: measure less, but measure it for real
- Where the numbers come from
- A worked example: one month, three fixes
- Different trades, different emphasis
- Putting this into practice with Pipeline
- FAQ
- Sources
What a KPI is for in a trades business
A KPI is a number you check regularly to see whether the business is heading where you want it to. It is not a report for someone else. If a number does not change a decision, drop it.
Field service guides usually group KPIs into a few families: efficiency (how fast and how well work gets done), customer experience, and financial results. Salesforce’s field service metrics guide covers eight metrics from the tactical to customer satisfaction, and the same split works for a small firm. We have arranged ours to follow the customer journey: enquiry, quote, visit, invoice, payment, feedback.
1. Enquiry response time
What it is: the time between an enquiry arriving and your first real reply.
How to measure it: note when the call, message or web form came in and when someone answered with something useful, not an automated acknowledgement. Salesforce’s customer service KPI guide defines first-response time as the gap between a request being created and the first meaningful reply. For trades, read that as enquiry to first proper answer.
Why it matters: a homeowner with a leaking stopcock or a landlord with a broken boiler is messaging several firms. The one that replies first often gets the job. Slow replies are money walking out the door, and you never see the cost because the customer simply goes elsewhere.
A sensible target: set your own. Many small firms aim for same-day replies in working hours and a quick acknowledgement out of hours. Measure your current average for a month first, then try to shave it down.
2. Quote conversion rate
What it is: the share of quotes you send that turn into booked work.
Formula: quotes accepted ÷ quotes sent × 100.
Why it matters: if you win three in ten, every extra quote you send is worth less than it feels. Split the figure by job type. You may win nine in ten small repairs but only two in ten bathroom refits, which tells you where to spend your time.
What to look at alongside it:
- How long quotes take to go out after the site visit.
- How many quotes get no reply at all (these need a follow-up, not a shrug).
- Whether reusable templates for common jobs speed things up and keep pricing consistent.
3. First-time fix rate
What it is: the percentage of jobs completed on the first visit, with no return trip for parts, tools or missing information.
Formula: jobs completed on the first visit ÷ total jobs × 100.
Why it matters: every revisit costs fuel, time and a slot you could have sold again. It also annoys customers.
What a good number looks like: a 2025 benchmark from Aquant, cited by VSight, puts the median first-time fix rate at 75%, with the top 20% at 86% and the bottom 20% at 53%. It draws on 157 service organisations. Aquant sells field-service AI and the data comes from large organisations, so treat it as a rough reference, not a UK trades target. A plumber fixing taps and a heating engineer working on older boilers will land in very different places.
How to improve it:
- Record why each return visit happened: wrong part, no access, unclear fault, not enough time booked.
- Fix the most common reason first. Usually it is information, not skill.
- Make sure job notes, photos and customer history travel with the job to the engineer’s phone.
4. Jobs completed per day
What it is: the average number of jobs each engineer or team finishes in a working day.
Why it matters: it is the simplest read on how well your diary is built. Compare like with like. A boiler install and a three-visit bathroom job should not share an average, so group by job type.
Watch out for: a rising jobs-per-day figure with a falling first-time fix rate. That usually means people are rushing and coming back later.
5. Technician utilisation
What it is: the share of paid hours spent on billable work.
Formula: billable hours ÷ paid hours × 100.
Why it matters: travel, parts runs, waiting for access and admin all eat paid hours. Utilisation shows how much is lost. Do not aim for 100%. Nobody can bill every minute, and chasing it burns people out. The point is to spot the gaps you can close, such as badly sequenced routes or gaps between appointments.
Practical fix: a visual schedule makes dead time obvious. When you can see a half-day gap next to a job two miles away, you can fill it.
6. Job-level margin
What it is: what is left of the job price after labour, materials, subcontractors and other direct costs.
Formula: (job price − direct costs) ÷ job price × 100.
Why it matters: turnover can look healthy while a type of job quietly loses money. A US contractor finance analysis from Level ranks job-level gross margin among the most profit-sensitive contractor KPIs and gives a median of 44.3%. That is a US data set, so use it as context and not as your target. Your own margin by job type matters more.
How to work it out in practice:
- Record the quoted price and the quoted cost before you start.
- Log real hours and materials against the job.
- Compare the two when the job closes. If the same job type misses its margin three times, your pricing is wrong, not your luck.
If you are VAT registered, calculate margin on figures excluding VAT, since VAT is not your income.
7. Time to invoice
What it is: the days between finishing a job and sending the invoice.
Why it matters: the clock on payment does not start until the invoice goes out. Invoicing a week late means being paid a week late. Level lists billing speed among its profit-ranked contractor KPIs too.
A simple rule: invoice the same day, from the van if you can. That is much easier when the invoice is built from the job record, so you are not retyping what the customer agreed. Our online invoicing is designed around exactly that.
8. Collection rate and days to get paid
What it is: the share of invoiced money you have actually collected, plus the average days it takes.
Formula: payments received ÷ amounts invoiced × 100, measured over a set period.
What good looks like: the same Level analysis reports a median collection rate of 85.1% and 96.0% for the top decile, again from US contractors. Use it to sense-check, then track your own trend. If you sit at 85%, one pound in seven you earned is still not in the bank.
How to improve it:
- Send invoices with an online payment option so customers can pay on the spot.
- Automate reminders by email or SMS, so you are not the one making awkward calls.
- Take deposits on larger jobs.
- Review overdue invoices weekly, not monthly.
9. Customer feedback after the job
What it is: a simple score or rating collected after each job, plus any comments.
How to measure it: Net Promoter Score is the percentage of promoters minus the percentage of detractors, as Salesforce explains. If that feels heavy, one question works: how did we do, out of five? Send it the same day, by text.
Why it matters: low scores point to problems before they become lost repeat work. High scores are a source of reviews and referrals. Our piece on customer feedback loops for small service firms goes into how to turn answers into fixes. If you handle the public side of feedback on social media, this guide to customer service on social media is useful for replying to comments and complaints well.
The nine at a glance
| KPI | Formula | Check | Main lever |
|---|---|---|---|
| Enquiry response time | Enquiry received to first real reply | Weekly | Notifications, one inbox |
| Quote conversion | Accepted ÷ sent | Monthly | Speed, templates, follow-up |
| First-time fix rate | First-visit completions ÷ jobs | Monthly | Job notes, parts, info |
| Jobs per day | Jobs ÷ engineer days | Monthly | Scheduling, routes |
| Utilisation | Billable ÷ paid hours | Monthly | Gaps, travel |
| Job margin | (Price − costs) ÷ price | Per job | Pricing, cost tracking |
| Time to invoice | Job done to invoice sent | Weekly | Same-day invoicing |
| Collection rate | Paid ÷ invoiced | Weekly | Online payment, reminders |
| Customer feedback | Score or NPS | Monthly | Post-job text |
Our view: measure less, but measure it for real
We build software for UK trades and service firms, and the same pattern shows up again and again. The owner knows something is off: jobs overrun, cash is tight, enquiries go cold. But the answer is spread across a spreadsheet, a notes app, a group chat and a shoebox of receipts.
In that state, KPIs become a Sunday-night chore, and nobody trusts the result. The problem is rarely the choice of metric. It is that the data is scattered.
Our advice:
- Start with the money KPIs. Job margin, time to invoice and collection rate rarely need new habits, only a record of what already happens.
- Keep one customer record. When the enquiry, quote, job, invoice and payment all hang off the same customer, most of the nine fall out almost for free.
- Do not copy big-company targets. Benchmarks from large service organisations are fine for context. Your first target is last month’s number.
- Pick one KPI per month. Improve it, then move on.
That is why we built enquiries, quotes, scheduling, invoicing and payments into one platform with built-in reports, instead of leaving you to stitch tools together.
— Chris
Where the numbers come from
The nine KPIs need five kinds of record. If you have these, you can measure everything above.
- Enquiry log: date and time in, source, and first reply time.
- Quotes: date sent, value, status (accepted, declined, no reply).
- Jobs: booked slot, who attended, hours, materials, whether it was finished on the first visit and, if not, why.
- Invoices and payments: date sent, date paid, amount.
- Feedback: score and comments per job.
If those live in different apps, you will spend more time copying data than reading it. For a deeper look at running the job side more smoothly, see how to manage service jobs more efficiently. If you are a plumber, the plumbing business software features guide lists what to look for.
A worked example: one month, three fixes
Take a small heating firm with three engineers. A month of records shows:
- 62 enquiries, average first reply 5 hours.
- 40 quotes sent, 14 accepted: 35% conversion.
- 120 jobs, 90 finished first visit: 75% first-time fix.
- Invoices go out an average of 4 days after the job.
The owner picks one problem per month. In month one, it is time to invoice: same-day invoicing cuts four days off every payment. In month two, return visits: the notes show half were missing parts, so engineers check the parts list the evening before. In month three, response time: new enquiries trigger an instant text, then a call within two hours.
None of that needs a data team. It needs the numbers in front of you.
Different trades, different emphasis
- Reactive trades (plumbing, heating, electrical call-outs): response time, first-time fix and jobs per day matter most.
- Project and installation work: quote conversion, job margin and deposit collection matter most. See our HVAC job management software page for how a heating and cooling firm might set this up.
- Cleaners and recurring services: on-time attendance, feedback scores and payment collection matter most.
- Property and maintenance teams: repeat-site work and tenant or agent feedback matter. Our facilities management page covers that setup.
Putting this into practice with Pipeline
Pipeline brings enquiries, quotes, jobs, appointments, invoices and payments into one customer record, with a mobile app for your team in the field and built-in reports. It integrates with Xero, QuickBooks, Stripe, Google Calendar, Twilio SMS and Zapier.
Pricing is flat per month, with no per-user fees: Solo is £12 per month, Starter is £38 per month and Professional is £63 per month. Enterprise and text messages have no published price. See the pricing page to compare plans.
FAQ
What are the most important field service KPIs?
For most small trades firms: first-time fix rate, enquiry response time, quote conversion, job margin, time to invoice and collection rate. Larger service organisations add measures like SLA compliance and mean time to repair. Start with the ones that tie directly to winning work and getting paid.
What is a good first-time fix rate?
A 2025 Aquant benchmark cited by VSight shows a median of 75% and a top-20% figure of 86%. It comes from a vendor and large service organisations, so use it as a rough guide. Compare your own rate by job type before setting a target.
How many KPIs should a small service business track?
Six to nine is plenty, reviewed monthly. More than that and you stop acting on them. Pick one to improve at a time.
How do I track KPIs without spending hours on admin?
Record everything at the source: enquiry, quote, job, invoice and payment in one system. Then the reports do the sums. If you rely on spreadsheets and chat messages, expect gaps and doubts about the numbers.
Sources
- Field Service KPIs: Formulas & Benchmarks, VSight
- 12 Customer Service KPIs Every Service Team Should Measure, Salesforce
- These 8 Field Service Metrics Can Help Your Business, Salesforce
- Contractor Finance KPIs Ranked by Profit Impact, Level