Performance review cost and cycle-time calculator

The complete guide to measuring what your performance review cycle costs

The calculator above gives you a number in under a minute. This guide explains what sits behind that number: why review time is worth measuring at all, how to fill in each field honestly, how to read the result, a full worked example for a 200-person company, the mistakes that make estimates useless, and what to do next. It is written for People leaders, CPOs, COOs and Finance partners who need to decide whether their current cycle is worth the time it takes.

Why the cost of a review cycle matters

Most companies budget carefully for the software they use to run reviews and not at all for the time the reviews consume. That time is real. Managers write evidence and ratings for every direct report, employees write self-assessments, and groups of managers sit in calibration meetings that can run for half a day. None of it appears on an invoice, so it rarely gets challenged.

The best-known public example is Deloitte. In “Reinventing Performance Management” (Harvard Business Review, 2015), Marcus Buckingham and Ashley Goodall describe how Deloitte tallied the time spent completing forms, holding meetings and creating ratings and found it came to close to 2 million hours a year. Your company is far smaller, but the mechanics are the same: hours scale with headcount, with the number of cycles, and with how many people sit in each calibration room.

Time is only half the story. The same HBR article reports research showing that ratings often reveal more about the rater than the person being rated, which means a lot of those hours can produce numbers people do not trust. McKinsey’s 2024 article “In the spotlight: Performance management that puts people first” puts the right question first in its health check: are we getting the expected returns from the time invested in the performance management process? You cannot answer that question without first knowing the time invested. That is what this calculator is for.

There is also a sequencing reason to measure. When a People team proposes moving from an annual cycle to a quarterly one, the first objection is usually “managers will spend four times as long on reviews”. That is only true if each cycle stays as heavy as it is today. Knowing where the hours go (writing, self-assessment or calibration) tells you which part to make lighter before you add frequency.

How to use the calculator, field by field

Every number comes from you. The tool has no hidden benchmarks, so the quality of the answer depends on the quality of the inputs. Here is how to get each one right.

• Employees reviewed per cycle. Count everyone who receives a written review, not total headcount. Exclude people still in probation if they follow a separate process, and contractors if they are not reviewed.
• People managers. Everyone who writes at least one review. This drives the “hours per manager” figure, which is the number managers will recognise.
• Review cycles per year. Count formal cycles that produce a rating or written review. Informal monthly check-ins do not count here.
• Weeks from launch to close. Elapsed calendar time from the day review requests go out to the day employees hear their results. Look at last cycle’s actual dates, not the plan.
• Manager hours per review. The total time for one direct report: finding evidence, reading feedback, writing, rating and preparing the conversation. Ask three or four managers what they really spent; people usually underestimate by half.
• Employee hours per self-assessment. Include the time spent hunting for examples, not only writing.
• Calibration sessions, hours and attendees. One session per department is typical. Multiply carefully: a four-hour meeting with six managers is twenty-four person-hours, which is why calibration is often the largest hidden line.
• Average hourly cost (optional). Ask Finance for a loaded hourly cost for managers, or leave it at zero and present hours only. Hours are often more persuasive internally because nobody argues about the rate.

How to interpret your result

The result has three parts. First, a total number of hours a year (shown straight away), split into manager writing, self-assessments and calibration (unlocked with your work email, along with the comparisons below). Second, hours per manager per year, which tells you how much of a manager’s working year the process consumes. Third, an illustration of what three published Revolut People customer results would mean at your numbers: Ebury cutting departmental calibration from 4 hours to 1, Cleo bringing self-assessments down to 5 to 10 minutes, and Sertis completing review cycles 75% faster.

Read the split before the total. The largest of the three lines is where your effort should go:

The customer comparisons are illustrations, not forecasts. They show what the same change would mean at your scale if you achieved it. Treat them as a way to size the opportunity, then test whether the underlying cause applies to you.

Elapsed time matters separately from hours. A cycle that takes eight weeks from launch to close means decisions on promotion, pay and underperformance wait two months, and the evidence gets older while it waits. The playbook’s own guideline is about one to two weeks for manager reviews and about a week at most for calibration, including leadership review (see the review-cycle checklist). That is a practical starting point, not an industry benchmark.

Worked example: a 200-person scale-up

Here is an illustrative company. The figures are invented for the example, not drawn from a survey.

• 200 employees reviewed, 25 people managers, two cycles a year, seven weeks from launch to close.
• Managers spend 3 hours per review; employees spend 2 hours on each self-assessment.
• Six calibration sessions per cycle, each 4 hours, with 6 people in the room.

The arithmetic the calculator runs:

• Manager writing: 200 reviews × 3 hours × 2 cycles = 1,200 hours.
• Self-assessments: 200 people × 2 hours × 2 cycles = 800 hours.
• Calibration: 6 sessions × 4 hours × 6 people × 2 cycles = 288 hours.
• Total: 2,288 hours a year, or about (1,200 + 288) ÷ 25 ≈ 60 hours per manager per year on writing and calibration.

Sixty hours is around a working week and a half per manager, every year, before any coaching conversation happens. If the same company applied an Ebury-style 75% cut to calibration, those 288 hours would become 72. If self-assessments took 5 to 10 minutes instead of 2 hours, 800 hours would become roughly 33 to 67. The writing line is untouched by either change, which tells this company that its biggest lever is how evidence is collected during the cycle, not the meetings at the end.

This is the conversation the number is meant to start. The People lead can now say: “We spend about 2,300 hours a year on reviews, 1,200 of them writing up evidence managers should already have. If we fix that first, we can move to quarterly reviews without adding time.”

Common mistakes

• Using planned rather than actual times. The project plan says reviews take two weeks; last cycle took five. Use what happened.
• Forgetting calibration attendees. Entering session length without multiplying by the people in the room hides most of the cost.
• Counting only managers. Self-assessment hours are spread thinly across everyone, which is exactly why they go unnoticed.
• Treating the money figure as a saving. Released hours are capacity, not cash. Present them as time managers get back for coaching, hiring or delivery.
• Using the customer results as a promise. They are published outcomes from specific companies. Your result depends on your process, your managers and your tooling.
• Measuring once. Re-run the numbers after each cycle so you can show whether the changes worked.

What to do with the number

Share the split, not just the total, with your leadership team. Pick the single biggest line and change one thing about it for the next cycle. Use the review-cycle checklist to plan dates and owners, and the bias checker to make sure a faster cycle is also a fairer one. If you are weighing software, the buyer’s guide lists what to test, and the pricing estimator lets you put the time cost next to a list price. For a cycle-length plan at your size, see the guide to how long a review cycle should take and the week-by-week timeline for a 200-person company.

Sources: Buckingham & Goodall, Reinventing Performance Management, HBR (2015); McKinsey, In the spotlight: Performance management that puts people first (2024); CIPD, Performance management factsheet. Customer results are taken from published Revolut People customer stories.