The Revenue Leak Finder: How to Read Your Own Numbers in 60 Seconds

Four inputs, one number. Here is exactly what the calculator does, and how to argue with the answer.

Jocel 3 November 2026 6 min read Keyword: automation roi calculator service business
Featured image · 1200 × 630

Most automation pitches ask you to believe a percentage. This one asks you for four numbers you already know, and hands the arithmetic back to you so you can check it.

The Revenue Leak Finder does one thing: it estimates the revenue sitting in the gap between the leads you pay for and the jobs you book. No efficiency multipliers, no productivity indexes, no assumptions you cannot see.

It takes about sixty seconds. This post is the slow version, so you know exactly what it is doing before you decide whether to trust it.

The four inputs

Four inputs. Every one of them is a number you can find in ten minutes.

1. Inbound leads per month

Every inquiry across every channel: forms, calls, chat, marketplace, referral. Count inquiries, not conversations. Most owners undercount this by a third because missed calls are invisible, which is exactly why the missed-call count matters.

2. Average job value

Total revenue divided by jobs completed, over the last ninety days. Use the blended number, not your best month and not your flagship install.

3. Current close rate

Jobs booked divided by inquiries received. Not jobs divided by quotes, which is a much prettier and much less useful number.

4. Median time to first reply

From inquiry to your first outbound message. If you do not know it, take fifteen leads from last week and time them by hand. Almost nobody guesses this correctly, and the gap between the guess and the truth is usually where the money is.

4 numbersand every one of them is already sitting in your call log, your invoices and your inbox

A worked example, line by line

Here is a real-shaped example, worked through the way the calculator does it.

InputValue
Inbound leads per month80
Average job value$850
Current close rate on inquiries18%
Median time to first reply3 hours

Today that is 14 jobs a month and $11,900 of booked revenue. Now the model changes two things, and only two.

01
First reply moves under five minutes. Leads contacted within five minutes are up to 21 times more likely to qualify than those contacted after thirty, so the model lifts the reachable share, conservatively, from 60% to 85% of inquiries.
02
Follow-up goes from one touch to five. With only about 2% of sales closing on first contact, the model lifts the close rate on reached leads rather than inventing new leads. Eighteen per cent becomes 26%, which is below what most operators actually see once a cadence runs.
03
It multiplies, and it stops. 80 leads at a 26% close rate is 21 jobs, against 14 today. Seven extra jobs at $850 is $5,950 a month and $71,400 a year. No further adjustments, no soft benefits, no hours-saved line added on top.
$5,950estimated monthly gap, on the same leads and the same spend
$71,400annualised, before counting recovered missed calls or after-hours bookings

The three inputs people get wrong

Lead count, almost always too low. Missed calls, abandoned chats and marketplace leads that went to a personal email rarely make it into the count. Pull the call log before you answer this one, because the correction usually adds twenty per cent.

Close rate, almost always too high. Most owners quote their quote-to-job rate, which might be 55%, rather than their inquiry-to-job rate, which might be 18%. The calculator wants the second one, and it is a less flattering number by design.

Reply time, almost always guessed. Owners guess twenty minutes and measure three hours. This is the input where the gap between belief and reality is largest, and it is also the input the whole model is most sensitive to, so spend the ten minutes and measure it properly.

Mid-post · run it yourself
Four inputs. Sixty seconds. Your number, not mine.
Open the Revenue Leak Finder →

How to argue with the number

Now the part most calculators skip. Here is how to attack the number, because a figure you have not attacked is a figure you will not act on.

Attack the close rate first. If you do not believe 18% becomes 26%, put in 22% instead. The gap drops to about $2,900 a month, which is still $34,800 a year for a fix that takes a fortnight to install.

Attack the lead count next. If you undercounted inquiries because missed calls never got logged, the real gap is larger, not smaller. That is the correction that usually goes the wrong way for comfort.

Then check the ticket. Average job value pulled from a good quarter will overstate everything. Use ninety days, blended, including the small jobs.

Never make a claim without a number, and never leave a number without a next step.

Run it with your own four inputs, then argue with it. If the number survives your worst-case assumptions and is still worth more than a fortnight of work, you have your answer without needing to trust anybody's percentage.

Numbers in this post

External figures are industry benchmarks, framed as typical or up to. Client figures are real and named where permitted.

Share this post
The next step

Bring me the number you got.

Thirty minutes, no deck. We pressure-test your inputs against your actual books, then work out which single fix closes most of the gap.

Book a discovery call →
Written by
Jocel Rengel Cubeta

Jocel Rengel Cubeta

Automation & CRM systems for service businesses

I build the front office that answers, follows up and reports, for HVAC, plumbing, electrical, roofing and other service operators doing $500K to $5M. Background in risk and QA, which is why nothing ships here until it has been stress-tested against a real customer conversation. Everything I write about is something I have built, broken, fixed, and documented.

14posts
4pillars
90sclient reply time
One email, once a week

The next leak, before it costs you.

One post a week, always with the math. No funnels, no fluff, unsubscribe in one click.

Joining service-business owners who'd rather fix the leak than buy more leads.

Keep reading

All 14 posts →
Work with Jocel

Automation, CRM and AI front-desk systems for service businesses. Stop losing the leads you already paid for.

Get in touch
© 2026 Work with Jocel. Let's build something that works for you. workwithjocel.com  ·  Privacy policy