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Advanced Performance Management · Performance hierarchy

Critical Success Factors and KPIs in ACCA APM

Updated 11 October 2026 · Fact-checked

A critical success factor (CSF) is something an organisation must get right to achieve its strategy. A key performance indicator (KPI) is a measure that shows how well it is doing on a CSF. To answer questions, state the objective, identify the CSFs, then give a measurable KPI for each.

Understand Critical Success Factors and KPIs

Start with strategy. An organisation has a mission and objectives. Many things could matter, but only a few decide whether the objectives are met. These few things are the critical success factors (CSFs). If you fail at a CSF, the strategy fails.

A CSF is a statement of what must be achieved, such as "keep customers loyal" or "deliver on time". It is not a number. It is usually expressed in words and tied to a strategic objective.

A key performance indicator (KPI) is the measure used to monitor a CSF. For "keep customers loyal", KPIs could be the customer retention rate or the repeat purchase rate. Each CSF needs at least one KPI so that you can tell whether it is being achieved. The chain is: objective, then CSF, then KPI, then target.

A good KPI is linked to strategy, measurable, controllable by the manager being judged, and timely. It should also be understood by the people who use it. Too many KPIs hide what matters, so keep the list short. Mix financial and non-financial KPIs so that you see both results and the drivers of results.

CSFs differ by organisation and by strategy. A low-cost airline may focus on aircraft turnaround time and load factor. A luxury hotel may focus on service quality and brand reputation. In the exam, always tailor CSFs to the scenario. Generic answers score poorly.

Key rules to remember

Performance chain
Mission → Objectives → CSFs → KPIs → Targets
Each level must follow from the one above. Use this to structure answers.
SMART test for a KPI
Specific, Measurable, Achievable, Relevant, Time-bound
A commonly used checklist. Use it to judge whether a proposed KPI is suitable.
Customer retention rate
Customers retained at end of period ÷ customers at start of period × 100%
Count only customers who were there at the start. Exclude new customers won in the period.
Load factor
Seats occupied ÷ seats available × 100%
A typical KPI for transport and similar capacity-based businesses.
On-time delivery rate
Orders delivered on time ÷ total orders delivered × 100%
A service-quality KPI that links to a CSF of reliability.

How to solve Critical Success Factors and KPIs questions

Use this method for any question on identifying CSFs or choosing KPIs. It works for scenarios in Section A and Section B.

  1. 1Read the requirement. Note whether it asks for CSFs, KPIs, or both, and whether it asks you to evaluate or recommend.
  2. 2Identify the organisation's strategy and objectives from the scenario. Quote or paraphrase them.
  3. 3List the few factors that must go right for the strategy to succeed. These are your CSFs. Aim for three to five, each tied to the scenario.
  4. 4For each CSF, propose one or two KPIs. Mix financial and non-financial measures, and state how each is calculated.
  5. 5Check each KPI: is it measurable, controllable and relevant to the CSF? Say what target or comparison you would use.
  6. 6Comment on weaknesses or risks, such as too many measures, short-term focus, or data that is hard to collect.
  7. 7Make a clear recommendation or conclusion that answers the requirement, in a form suited to the audience, such as a report or briefing note.

Quickest way: CSF to KPI table in your head

When to use it: Use when time is short and the question asks you to suggest KPIs for a given strategy.

  1. Write the strategic objective in five words at the top of your plan.
  2. List three to four CSFs using words such as customers, quality, cost, people, innovation or reputation, but adapt them to the scenario.
  3. Beside each CSF, write one KPI with its calculation.
  4. Add a target or benchmark if the scenario gives data.
  5. Write one sentence on a limitation or a link to another KPI.

Common mistakes in Critical Success Factors and KPIs

  • Treating CSFs and KPIs as the same thing.

    Both relate to success, so students blur them.

    Fix: Say that a CSF is what must be achieved and a KPI is how you measure it. Write them in separate columns or lines.

  • Giving generic CSFs such as "profit" or "growth" for every business.

    Students recall a textbook list and do not read the scenario closely.

    Fix: Link each CSF to a fact in the case. If the firm competes on speed, make delivery time a CSF.

  • Suggesting KPIs with no calculation or unit.

    Students name an area, such as quality, and stop.

    Fix: Define the KPI precisely, for example defects per 1,000 units or percentage of orders delivered on time.

  • Using only financial KPIs.

    Financial measures feel safer and are easier to compute.

    Fix: Add non-financial KPIs for customers, processes and people. They show the drivers of future financial results.

  • Listing too many KPIs.

    Students think more points means more marks.

    Fix: Choose a small set that links directly to CSFs, and explain why each one is chosen.

  • Ignoring whether the manager can control the KPI.

    Students focus on what is important, not on who is accountable.

    Fix: Check controllability. If a manager cannot influence a measure, it will demotivate and may encourage manipulation.

Worked examples

Example 1

A regional budget airline has the strategy of being the lowest-cost carrier on short routes while keeping customers satisfied enough to return. Identify three critical success factors and suggest one KPI for each.

Show the solution
  1. Strategy: low cost on short routes with repeat customers.
  2. CSF 1: Keep aircraft in the air as much as possible. Quick turnaround spreads fixed costs over more flights. KPI: average aircraft turnaround time in minutes, and flying hours per aircraft per day.
  3. CSF 2: Fill as many seats as possible. KPI: load factor = seats occupied ÷ seats available × 100%.
  4. CSF 3: Reliable service so customers return. KPI: percentage of flights departing on time, or the repeat booking rate.
  5. Comment: these mix cost, capacity and customer measures. A cost-only focus could harm punctuality, so the set must be balanced.

Answer: CSFs: high aircraft utilisation, high seat occupancy and reliable service. KPIs: turnaround time or flying hours per aircraft, load factor, and on-time departure percentage.

Example 2

A software firm has 2,000 subscribers at the start of the year. During the year it wins 500 new subscribers and 300 of its starting subscribers cancel. Its CSF is to retain customers. Calculate the customer retention rate and comment.

Show the solution
  1. Retention counts only starting customers who stay.
  2. Starting customers retained = 2,000 − 300 = 1,700.
  3. Retention rate = 1,700 ÷ 2,000 × 100% = 85%.
  4. Do not include the 500 new subscribers. Including them would give 2,200 ÷ 2,000 = 110%, which is wrong.
  5. Comment: 15% of existing customers left. Compare this with the target, prior years and competitors. Investigate reasons for cancellation, and track new customer growth separately.

Answer: Customer retention rate = 85%. The firm should compare it with target and benchmarks and look into why 15% cancelled.

Exam tips

  • Always start from the organisation's strategy. Examiners reward CSFs that clearly come from the scenario.
  • Define each KPI with a calculation or unit. A named area without a measure scores little.
  • Show professional skills: link KPIs to strategy, question whether they are controllable, and comment on behaviour they may cause.
  • If the question gives data, calculate the KPI and then interpret it. Marks are mostly for the comment.
  • Do not present CSFs and KPIs as a long list. Use a short, structured answer that suits the audience in the requirement.

Practice questions from Performance hierarchy

Critical Success Factors and KPIs in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Critical Success Factors and KPIs: frequently asked questions

What is the difference between a CSF and a KPI?

A CSF is something the organisation must achieve to succeed in its strategy. A KPI is the measure used to monitor progress on that CSF. For example, the CSF might be customer loyalty and the KPI might be the retention rate.

How many KPIs should I suggest in the APM exam?

Suggest enough to answer the requirement and no more. Usually one or two well-defined KPIs for each CSF is enough. Quality and relevance earn more marks than a long list.

Can a CSF be financial?

Yes. Cash flow or cost control can be a CSF if the strategy depends on it. However, most strategies also depend on non-financial factors such as customers, quality and people, so a mix is usually best.

How do I choose good KPIs for a strategy?

Start with the objective and identify the CSFs. Pick measures that are clearly linked to them, measurable, controllable by the responsible manager and available in time to act. Check that they do not encourage harmful behaviour.