The Cost-of-Vacancy Pitch: How Recruiters Win the Fee Conversation (2026)

TL;DR

A hiring manager who only sees a fee as a percentage of salary will compare it with zero, the cost of doing nothing. The fix is to put a second number next to it: what the open role costs the client every working day. The standard method divides revenue per employee by working days, applies a 1 to 3 role multiplier and multiplies by days open [1]. With UK roles taking around 40 days to fill in SmartRecruiters' data [2] and 36% of German firms saying they cannot fill vacancies at least in part [4], that second number is rarely small. This guide gives you the formula, a worked example with clearly labelled assumptions, a short call script and the timing logic, because the pitch lands hardest when vacancy pain has just started. boilr.ai prepares the account research and the first-pass numbers, whilst you verify them with the client and send.

Why the Percentage Loses the Fee Conversation

A percentage fee is a price with no denominator. The client hears "20% of salary" and has nothing to weigh it against except an internal job ad that costs nothing visible. The cost of vacancy supplies the missing comparison.

• The baseline is zero - a job ad feels free, so any fee looks like extra spend. The cost of the empty chair is invisible until someone writes it down.
• Percentage invites a discount - once the debate is about the rate, the only move left is to cut it. For the margin side of that fight, see our guide to protecting agency margins under fee pressure.
• Time is the real product - what a client buys is a shorter vacancy. Hiring is slow right now: a Totaljobs survey of 900 HR leaders reported an average of eight weeks to hire in the UK, up from just under five weeks a year earlier [3].
• The hiring manager owns the pain - the person who feels the empty seat is rarely the person who signs off the fee. Giving the manager a number they can take to finance changes who is on your side.
• It qualifies you in - a consultant who asks about revenue per head and project delay sounds like an adviser, not a vendor.

This is not the same job as deciding whether a company really intends to hire. That is covered in how to qualify hiring intent. This article starts after you know there is a live vacancy and the question is what it is worth.

The Three Costs of an Open Role

Every cost-of-vacancy model is a variation on three buckets. Keep them separate on the call, so the client can challenge one without rejecting all three.

Bucket	What it measures	How to estimate it	How hard the number is
Lost output	Revenue or profit the seat would have produced	(Annual revenue / employees) / 220 x multiplier x days open [1]	Medium - depends on how directly the role earns
Team overload	Overtime, contractors and cover paid for whilst the seat is empty	Extra hours or contractor day rate x days open	Hard - these are real invoices, so ask for them
Delay	Projects, launches or billing that slip until the person starts	Ask for the next milestone that depends on the role and its value	Soft - client-specific, treat as upside, not the headline

Note the offset. A vacancy also saves salary and benefits whilst it lasts, which any honest model subtracts [1][6]. Raising it yourself is a credibility move, and it matters most for roles that do not directly produce revenue.

The Cost of Vacancy Calculator Recruiters Can Run in Five Minutes

You do not need software for the core calculation. You need four inputs and a calculator.

1. Revenue per employee - annual revenue divided by headcount. For listed or large firms it is public; for private clients, ask.
2. Working days - 220 in the Dice method [1]; Built In uses 260 [6]. Pick one and state it.
3. Role multiplier - 1 for a routine role, 2 for a high-impact role such as sales, tech or product, 3 for leadership [6]. The Dice version gives the range as 1 to 3 [1].
4. Days open - the client's own time-to-fill if you can get it, otherwise a cited benchmark such as 40 days in the UK [2].

Formula:

Daily cost = (annual revenue / employees) / 220 x multiplier
Vacancy cost = daily cost x days open
Break-even days = your fee / daily cost

The break-even line is the one that moves the conversation. It turns "is the fee too high" into "how many days faster than your own process do we need to be?"

A Worked Example With Stated Assumptions

The numbers below are an illustration, not a benchmark. Swap in your client's real inputs. Only the 40-day figure is taken from published research [2].

Input	Value	Source
Revenue per employee	£150,000	Assumed for the example
Working days	220	Dice method [1]
Role multiplier	1 (conservative)	Assumed
Days open	40	UK time to fill [2]
Salary of the role	£60,000	Assumed
Fee	20% = £12,000	Assumed

• Daily cost - £150,000 / 220 = about £682 per working day at multiplier 1.
• Vacancy cost over 40 days - about £27,300 at multiplier 1, or about £54,500 at multiplier 2.
• Break-even - £12,000 / £682 = about 18 working days. If you fill the role 18 days faster than the client would alone, lost output alone covers the fee.
• Salary offset - £60,000 / 220 = about £273 per day not paid, or about £10,900 over 40 days. Subtract it to stay honest; the net at multiplier 1 is roughly £16,400.

Even after the offset, a fee that looked like a cost now sits beside a larger number. Equally, run the example with a lower revenue-per-head and the maths can turn against you. That is useful information, because it tells you the pitch is wrong for that client or that role.

Which Roles the Pitch Works For, and Which It Does Not

Role type	Pitch strength	Lead with
Revenue-generating (sales, billable consultants)	Strong	Lost output at multiplier 2
Project-critical (engineering lead, programme manager)	Strong	Delay to the next milestone
Operational (shift manager, warehouse lead)	Medium	Overtime and agency cover already being paid
Support functions (HR, finance, admin)	Weak on revenue	Team overload and error risk, not lost revenue
Leadership	Strong but contested	Decision backlog, multiplier 3 with caution

Never force the revenue formula onto a role that does not earn. For those, the overload figure the client already knows, such as overtime and contractor spend, is more credible than a revenue estimate.

The Team Overload Argument

The empty seat does not stay empty in practice. Someone covers it. In the DIHK survey of almost 22,000 German companies, 55% of firms expect extra burden on the existing workforce as a consequence of labour and skills shortages [4]. That is an expectation across the economy, not a measurement of any one role, but it supports a simple question for your client.

• Who is covering the work - name the colleague, not the department.
• What are they not doing - the cost is the displaced work, not only the overtime.
• What is being paid for cover - contractor day rates, agency staff and overtime are invoiced numbers.
• What breaks next - a missed deadline or a resignation from the covering colleague is a second vacancy.

The Call Script

Use it after you have the brief and before you discuss terms. It is a structure, not a monologue, and every number comes from the client.

1. Frame - "Before we talk fee, can I check what this role is costing you each week it stays open?"
2. Ask for revenue per head - "Roughly what does each person in this team generate or bill?"
3. Ask for days open - "How long has it been open, and how long did the last similar hire take?"
4. Ask about cover - "Who is picking up the work, and are you paying overtime or a contractor?"
5. Say the number back - "So at about £680 a day, 40 days is roughly £27,000 before overtime. Does that feel right?"
6. Introduce speed - "If we can shortlist in ten days instead of waiting for inbound applications, that is where the value is. Shall we work from that?"

A short written follow-up helps. Send the three inputs, the formula and the break-even line in an email within an hour of the call, so the hiring manager can forward it to finance without rewriting anything.

Handling the Four Common Objections

Objection	What is really being said	Response
"That number is too high"	I do not trust your inputs	Rerun it live with their figures and multiplier 1. Show the salary offset.
"We will fill it ourselves"	My internal process is free	Ask for their last time-to-fill. Eight weeks on average is common [3].
"Your fee is 20%, others charge 15%"	Compare the rate	Compare days to shortlist. Use break-even days to show what a slower agency costs.
"This role is not revenue-generating"	Your formula does not apply	Agree, then switch to overload: cover costs and what the covering colleague is not doing.

Timing: Pitch When Vacancy Pain Starts

The cost-of-vacancy conversation works best early, because the cost is still being accrued and the client has not yet locked in a route. Once a role has been advertised for weeks and an internal team is working it, the conversation becomes a rescue pitch against your own competitors.

• Before the ad - a leaver, a funding round or a new exec often precedes the posting. See signal stacking for how to corroborate it.
• Day one of the vacancy - the daily cost is at its most persuasive when nobody has started absorbing the work.
• Week three or four - the overload argument takes over once colleagues are visibly covering.
• After a failed first attempt - the cost of days already lost is now sunk and visible.

Signal-led timing is the practical advantage. boilr's own signals page states that signals typically arrive 48 to 72 hours before a role is posted publicly, with funding and expansion signals sometimes weeks earlier [5]. Those are the vendor's own figures and the page does not publish its method, so treat them as a claim to test against your own data. The wider argument is in cold calling versus hiring signals.

Eight Illustrative Plays

These are scenario patterns to adapt, not case studies.

• Sales director leaves a scale-up - quantify pipeline that is unowned each week, at multiplier 2.
• Funded start-up needs its first CTO hire - lead with the delay to the product roadmap.
• Logistics site loses a shift manager - ask what overtime and agency cover already cost.
• Finance director role open after a restructure - use decision backlog, not revenue.
• Hospital department running on locums - the invoiced locum cost is the anchor number.
• Software firm with a stalled hire for six weeks - show cost already lost and the days a shortlist would take.
• DACH Mittelstand engineering team - frame it around the project milestone that depends on the hire.
• Client on a 15% PSL rate - use break-even days to show speed is worth more than a rate gap.

Mistakes That Undermine the Pitch

• Using your numbers, not theirs - an estimate you invented is an argument; one they supplied is a fact.
• Defaulting to multiplier 3 - an inflated figure ends the conversation. Start at 1.
• Quoting unsourced daily costs - vendor figures range wildly, so build from the client's inputs.
• Forgetting the offset - skipping the salary saving looks like selling.
• Promising speed you cannot deliver - break-even days become a commitment. Only quote them with a live shortlist.
• Using it on every role - it is weak for support functions. Know when to drop it.

KPIs to Track

KPI	Why it matters	How to use it
Share of fee calls where a cost number was agreed	Shows whether the pitch is actually being used	Log it as a CRM field per mandate
Fee discount requested vs granted	Measures whether ROI framing reduces rate pressure	Compare to your own baseline before the change
Days from brief to shortlist	The speed promise you must keep	Review per desk monthly
Mandates won on exclusive terms	Speed is easiest to sell when you control the search	Track alongside fee level

How boilr Fits In

boilr is your AI sales employee for recruitment. It does the preparation that makes this pitch quick: research on the account, the signal that explains why the role is open now and a drafted opener. The signals page describes funding rounds, new hires, executive moves and multi-turn signals, each becoming a Task with the contact and a suggested opener, with every signal linked to its original source for checking [5].

• Signals - flags the event that starts the vacancy clock, with the source link.
• Companies - holds the account record, so the inputs you collect on each call attach to the right client.
• ICP scoring - ranks accounts so the pitch goes to roles where it is strong.
• Tasks - delivers the drafted outreach for you to review and send.
• Company Brain - keeps your formula, objections and winning scripts in one place, so a new consultant does not start from zero.
• Integrations - writes follow-ups back to your CRM and calendar.

What stays human:

• Verifying the numbers - the client's real revenue per head, days open and cover costs come from them.
• Choosing the multiplier - a judgement about the role.
• The conversation - trust and negotiation are yours.
• Sending - nothing goes out without your review.

This is the pillar in practice: more billings without more headcount, because the research is prepared and your hours go to the call.

Want the account research and signal behind every fee conversation in your task list? Try boilr.ai free at app.boilr.ai or book a demo.

A 30-Day Plan

Week	Action	Output
1	Build the calculator in a spreadsheet, fix working days and multipliers by role type	One shared template
2	Write the six-step script and the four objection answers, role-play them	One-page call guide
3	Use it on every new fee conversation, log inputs and the agreed number in the CRM	First dataset
4	Compare discounts and win rates with the prior month, refine multipliers	Updated template and KPI baseline

Frequently Asked Questions

What is the cost of vacancy?

It is the estimated cost to a business of leaving a role unfilled, usually split into lost output, extra cost to cover the work and project delay, less the salary saved. The common formula uses revenue per employee, working days, a role multiplier and days open [1].

How do I use a cost of vacancy calculator with a client?

Ask for revenue per head, days open and cover costs, then calculate live and say the result back. Use their inputs, start with multiplier 1 and show the salary offset. Send the figures in writing so the hiring manager can take them to finance.

Which multiplier should I use?

One is conservative for routine roles. Built In suggests 2 for high-impact roles such as sales, tech and product, and 3 for leadership [6]. Start low. A defensible smaller number beats an impressive one the client rejects.

How long does it take to fill a role?

It depends on the source and definition. SmartRecruiters' analysis of 8.8 million UK applications gives 40 days [2], whereas a Totaljobs survey reports an average of eight weeks [3]. Prefer the client's own history where you can get it.

Does this work for temp and contract roles?

The logic holds, since the daily cost is the same, but the days open are usually far shorter, so the figure is smaller and speed matters more than total value. Frame it as cost per day of delay and compare it with your time to submit.

Should I show the cost of vacancy before or after I state my fee?

Before. Establish the value of speed first, then give the fee. Stating the percentage first anchors the conversation on rate, and the calculation then looks like a justification rather than a diagnosis.

Does the cost of vacancy replace negotiating on fee?

No. It changes what you negotiate about, from the rate towards speed, exclusivity and terms. Some clients will still push on price, and our guide to protecting agency margins covers the next step.

Can boilr calculate the cost of vacancy for me?

boilr prepares account research and the signal behind a vacancy and drafts the outreach as a Task for you to verify and send [5]. The client-specific inputs, such as revenue per head and cover costs, come from your conversation, so confirm with the client before quoting any figure.

Sources

Information sourced from public industry reports and official publications as of November 2026.

1. Dice - Calculating the cost of vacant tech positions (formulas, role multiplier)
2. Staffing Industry Analysts - UK businesses take 40 days to fill job roles (SmartRecruiters data, March 2025)
3. HR Review - Hiring slows as employers take twice as long to fill vacancies (Totaljobs survey, 31 October 2025)
4. DIHK - Fachkräftereport 2025/2026 (December 2025)
5. boilr.ai - Signals (product page)
6. Built In - Cost of vacancy explained (formula, multipliers, benefits cost)