Vacancy Cost Calculator: What Is an Empty Role Costing You?
When an engineering role stays open, your company loses far more than time. It loses product momentum, delivery speed and revenue. Our free vacancy cost calculator puts a daily figure on the cost of vacancy and shows how much you protect by filling roles faster with Bernoulli.
Work Out Your Cost of Vacancy
Move the sliders to match your open roles. The vacancy cost calculator updates instantly – no sign-up, no email address and nothing stored.
The True Cost of an Unfilled Engineering Role
Every day an engineering position stays open costs your business in lost product velocity and revenue drag. Calculate your vacancy impact in seconds.
Fill open roles in as fast as 21 days with Bernoullis flat-rate subscription.
Four Inputs That Drive the Cost of Vacancy
You simply adjust four controls to model your current hiring situation. Each one changes the daily cost of vacancy, so it is worth taking a moment to choose realistic figures before you share the result with your finance team or board.
Unfilled engineering roles
The number of engineering roles currently open in your business, for example two design engineers. The cost of unfilled positions scales in a straight line with this number.
Average annual salary
The yearly salary for the position, for example £60,000. Salary is the starting point because it is the clearest indicator of the value a role is expected to deliver.
Revenue multiplier
How critical the role is. Standard (1.5x) supports core operations, High Impact (2.0x) is attached to major launches, and Mission Critical (3.0x) covers technical leaders and architects driving revenue.
Expected days vacant
How long traditional agency hiring usually takes. The industry average time to fill is often quoted at 60 to 90 days for experienced engineers.
How the Vacancy Cost Calculator Works
Behind the scenes, the vacancy cost calculator translates hiring delays into direct financial loss using standard industry economics. There are three simple steps.
Daily cost of an open role
An engineer earning £60,000 on a standard 1.5x multiplier generates roughly £90,000 of business value a year. Across 250 working days, that is a cost of vacancy of £360 per day, per role.
Total vacancy drag
Multiply the daily figure by the number of open roles and the expected days vacant. Two roles open for 60 days add up to £43,200 of lost productivity and delayed output.
Protected revenue with Bernoulli
Our subscription model fills roles in an average of 21 days, compared with a 60-day industry standard. That is 39 days sooner, which protects around £28,080 across two roles.
A Worked Example: Two Open Engineering Roles
Imagine a manufacturing business with two open mechanical design roles, each paying £60,000. Using the standard 1.5x multiplier, each role should deliver around £90,000 of value a year, or £360 per working day. Every day the seats stay empty, the business loses £720 of output.
If the roles take the typical 60 days to fill through a traditional agency, the total cost of vacancy reaches £43,200. That figure does not appear on any invoice, which is why it is so often ignored, but it shows up as late projects, overtime for the rest of the team and missed revenue.
Cut the search to 21 days and the figure falls to £15,120. The difference, £28,080, is money that stays in the business. For many engineering teams, that saving alone is larger than the cost of recruitment itself.
Step 3 – what you see in real time
- Your daily revenue drag for every open role
- Total accumulated vacancy cost over your expected time to fill
- Bernoullis 21-day time-to-fill benchmark side by side with a 60-day agency timeline
- Net protected revenue from filling roles faster
What Is the Cost of Vacancy and Why Does It Matter?
The cost of vacancy is the value a business loses for every day a role remains unfilled. It includes lost output, delayed projects, overtime paid to cover the gap and, in some cases, contracts or bids you cannot take on. Because none of these costs appear as a line on an invoice, the cost of unfilled positions is one of the most underestimated numbers in hiring.
Engineering roles are especially exposed. A single design, project or controls engineer can be the bottleneck for a whole programme of work. When that seat is empty, drawings are delayed, commissioning slips and the rest of the team loses time waiting. Those losses compound quickly, which is why a vacancy cost calculator is one of the most useful tools a hiring manager can have.
Knowing the daily cost of vacancy also changes how you judge recruitment spend. A recruitment fee that looks expensive in isolation can be excellent value if it shortens the search by several weeks.
- Lost output and delayed project milestones
- Overtime and burnout for the existing team
- Missed bids, tenders and new business
- Higher reliance on expensive short-term contractors
How to Choose the Right Revenue Multiplier
The revenue multiplier reflects how much value a role creates compared with its salary. Most engineering roles sit at 1.5x, which assumes the person delivers one and a half times their salary in value, a common rule of thumb for skilled technical staff.
Use 2.0x when a role is attached to a major product launch, a large contract or a regulatory deadline. Use 3.0x for leaders, principal engineers and architects whose decisions affect whole teams. If you are unsure, start with the standard setting: it produces a conservative figure that is easy to defend in a budget meeting.
You can also run the vacancy cost calculator twice, once at 1.5x and once at 2.0x, to give your finance team a sensible range rather than a single number.
How to Reduce Your Time to Fill for Engineering Roles
Every day you remove from your time to fill cuts the cost of unfilled positions directly. The quickest wins usually come from preparation rather than from advertising harder. Agree the must-have skills before the role goes live, book interview slots in advance and give candidates feedback within 48 hours.
Working with a specialist engineering recruiter also helps. A recruiter who already knows the candidate market can present a shortlist within days rather than weeks, and technical screening means fewer wasted interviews. Our subscription model is built around speed, with an average of 21 days to place, so the cost of vacancy stays as low as possible.
- Write a clear brief with must-have and nice-to-have skills
- Pre-book interview slots with every decision maker
- Limit the process to two stages where possible
- Give feedback to candidates within 48 hours
- Make offers quickly and be ready to negotiate
The Hidden Impact of an Empty Seat on Your Team
Not every consequence of an open role can be expressed in pounds. When a team is short-staffed for weeks, the remaining engineers absorb extra work, often on top of their own deadlines. Morale drops, mistakes become more likely and your best people start to wonder whether the pressure will ever ease. In the worst cases, one open role turns into two when a stretched colleague decides to leave.
Customers notice too. Slower responses, missed milestones and rushed handovers all chip away at relationships you have spent years building. For consultancies and contractors, a stretched team can also mean declining new work or bidding less competitively, which limits growth long after the role is filled.
That is why we encourage clients to treat hiring as a planned activity rather than a reaction. A clear workforce plan, an agreed budget and a trusted recruitment partner mean that when someone resigns or a new project lands, the search starts immediately with a shortlist in days. The calculator gives you the financial case for acting quickly; the effect on your people is the reason it matters.
- Plan headcount at least a quarter ahead
- Agree a hiring budget before roles are approved
- Keep an up-to-date job description for every key role
- Choose a recruitment partner before you urgently need one
Ways to Cut the Cost of Unfilled Positions
Small changes to your hiring process can take weeks off every search and keep your team moving.
Brief before you advertise
Agree the salary range, skills and interview panel before the role goes live, so nothing stalls once good candidates apply.
Move fast on strong candidates
Experienced engineers often hold two or three offers. A slow decision is the most common reason a preferred candidate is lost.
Use technical screening
A specialist screen before interview removes unsuitable candidates early, saving hours of engineering manager time.
Plan for replacement hires
Keep a warm pipeline for roles with high turnover, so the next vacancy starts with a shortlist rather than a blank page.
Keep contractors as a bridge
For critical roles, a short-term contractor can cover the gap while you hire permanently, limiting the cost of vacancy.
Track every stage
Measure how long each role takes from approval to acceptance. What gets measured improves, and it shows exactly where delays happen.
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Engineering Specialists. We Solve Your Equations.
Having spent more than 20 years embedded within the planet’s most advanced engineering sectors, we don’t just recruit for your industry – we truly understand it. Our vacancy cost calculator uses the same numbers we use with clients every day to plan faster hiring.
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Vacancy Cost Calculator: Your Questions Answered
What is a vacancy cost calculator?
A vacancy cost calculator estimates how much money a business loses for every day a role remains open. It uses the salary, a value multiplier and the expected time to fill to give a daily and total cost of vacancy.
How do you calculate the cost of vacancy?
Multiply the annual salary by a revenue multiplier (usually 1.5x), divide by the number of working days in a year (around 250), then multiply by the number of days the role stays open. A £60,000 role at 1.5x costs about £360 per working day.
What is a typical time to fill for engineering roles?
For experienced engineers, 60 to 90 days is a common industry benchmark through traditional agency routes. Specialist or senior roles can take longer. Bernoullis subscription clients see an average of 21 days to place.
Why is the cost of unfilled positions so often ignored?
Because it never appears on an invoice. Lost productivity, delayed projects and overtime are real costs, but they are spread across budgets, so they are rarely added up. A vacancy cost calculator makes them visible.
Which revenue multiplier should I use?
Use 1.5x for most engineering roles, 2.0x for roles tied to major launches or contracts and 3.0x for technical leaders. If in doubt, choose 1.5x for a conservative figure.
Is the vacancy cost calculator free?
Yes. It is completely free, needs no sign-up and runs in your browser.
Does the calculator include recruitment fees?
No. It measures lost productivity only. To compare what you pay to recruit, use our Agency Savings Calculator alongside it.
How can Bernoullis reduce my time to fill?
We are engineers recruiting engineers, so we screen technically and work from an established candidate network. Combined with our subscription model, that means shortlists arrive quickly and roles are filled sooner. Book a free consultation to discuss your roles.
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