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Strategic Business Leader · Leading and managing projects

Project Life Cycle and Project Initiation in ACCA SBL

Updated 11 October 2026 · Fact-checked

A project life cycle splits a project into stages: initiation, planning, execution (with monitoring and control) and closure. Initiation decides whether the project should start. It uses a business case and a project initiation document (PID). In SBL, you apply these stages to the scenario and judge whether the project is justified.

Understand Project Life Cycle and Project Initiation

A project is a temporary effort with a defined start and end, created to deliver a specific outcome. It is not business as usual. Examples in SBL cases include a new IT system, a merger integration, a new factory or a restructuring.

The project life cycle breaks the work into stages so that management can control it and stop it if it no longer makes sense. A common version has four stages: initiation, planning, execution (including monitoring and control) and closure. Different textbooks use different labels. The exam rewards the logic, not one fixed model, so state which model you are using.

Initiation is the stage where you decide whether the project should happen at all. You define the problem or opportunity, set out objectives, identify stakeholders and assess feasibility. The main output is a business case. It explains why the project is needed, the options considered, costs, benefits, risks and the recommended option. Benefits should be tied to strategy. Include non-financial benefits, but do not rely on them alone.

Once the business case is approved, the project initiation document (PID) sets out the agreed basis for the project. It typically covers objectives, scope, deliverables, constraints, assumptions, budget, timescale, governance, roles, risks and the link to the business case. The sponsor and steering group use it to authorise the work and as a baseline for later control.

Planning turns the PID into detail: work breakdown, schedule, resources, budget, quality standards and risk plans. Execution delivers the work while progress is tracked against the plan, with changes controlled. Closure hands over deliverables, releases resources, records lessons learned and reviews whether the benefits were achieved. Many projects fail because initiation was weak: unclear objectives, an inflated business case, or no clear sponsor.

Key rules to remember

Project life cycle stages
Initiation → Planning → Execution (monitor and control) → Closure
State the model you use. Other texts add a separate 'monitoring and control' or 'post-completion review' stage.
Business case content
Need + Options + Costs + Benefits + Risks + Recommendation
Link benefits to strategy. Include both financial and non-financial factors.
Net present value decision rule
Accept if NPV > 0 (when evaluating independent projects, not under capital rationing)
Use when the business case includes cash flows. NPV = Σ cash flow ÷ (1 + r)^t, with the initial outlay at t = 0.
PID core contents
Objectives, scope, deliverables, budget, timescale, governance, roles, risks, assumptions
The PID is the baseline against which progress and change requests are judged.
Project constraints
Scope, time, cost, quality (and risk)
A change in one usually affects the others.

How to solve Project Life Cycle and Project Initiation questions

Use this method for any SBL question on project stages, initiation or the business case.

  1. 1Read the requirement and note the verb (assess, advise, recommend, explain). It decides how much analysis you need.
  2. 2Identify which stage the project is in from the scenario. Is it still being justified, being planned, or already running?
  3. 3Pick a simple framework: life cycle stages, business case contents or PID contents. Name it in one line.
  4. 4Apply each element to the scenario facts. Use figures, names and dates from the case, not generic points.
  5. 5Weigh the evidence. Say which benefits are firm and which are uncertain, and which risks matter most.
  6. 6Give a clear recommendation: proceed, proceed with conditions, delay or stop. Give reasons.
  7. 7Add professional skills: a sceptical view of optimistic claims, commercial awareness and a clear, structured layout suited to the audience (for example a board report).

Quickest way: Stage, Gap, Advice

When to use it: Use this when you have about 10 minutes for a 10 to 15 mark project requirement.

  1. Write the stage the project is at, for example 'initiation, business case not yet approved'.
  2. List three or four items that a sound initiation needs: clear objectives, sponsor, business case, PID.
  3. Tick or cross each against the scenario. Crosses are your weaknesses.
  4. For each cross, write the consequence and a fix in one sentence.
  5. Finish with a one-line recommendation and the main condition attached to it.

Common mistakes in Project Life Cycle and Project Initiation

  • Listing life cycle stages with no link to the scenario.

    Students learn the model as a list and reproduce it from memory.

    Fix: Tie every stage to a fact from the case. Say what is happening, what is missing and what should happen next.

  • Treating the business case as a financial calculation only.

    Investment appraisal is more familiar than strategic justification.

    Fix: Cover strategic fit, options, non-financial benefits, risks and stakeholders alongside the numbers.

  • Confusing the business case with the PID.

    Both are initiation documents and overlap in content.

    Fix: Business case answers 'should we do it?'. PID answers 'how will we run it and what exactly was agreed?'.

  • Accepting the sponsor's benefit claims without challenge.

    Students forget that SBL rewards scepticism.

    Fix: Ask who produced the figures, what assumptions sit behind them and whether optimism bias or self-interest is likely.

  • Ignoring closure and benefits realisation.

    Questions focus on starting and delivering, so the end seems minor.

    Fix: Mention handover, lessons learned and a review of whether the benefits actually arrived. This also supports later projects.

  • Giving a recommendation with no reasons or conditions.

    Time pressure leads to a one-word answer.

    Fix: State the decision, the two or three main reasons and what must be true for it to go ahead.

Worked examples

Example 1

Zentra Retail plans to replace its stock system at an estimated cost of $4 million. The IT director has sent the board a two-page note saying the project will 'transform the business'. No sponsor, objectives or timescale are given. Advise the board on what should be done at initiation.

Show the solution
  1. Stage: the project is at initiation. The board is being asked to approve it, so a business case is needed first.
  2. Gap 1: no clear objectives. 'Transform the business' cannot be measured. Objectives should be specific, for example lower stock holding or fewer stock-outs.
  3. Gap 2: no sponsor. A senior owner is needed to be accountable for benefits and to make decisions at the steering group.
  4. Gap 3: no business case. It should set out the need, options (including doing nothing or upgrading the old system), costs, benefits, risks and a recommendation.
  5. Gap 4: no timescale or scope, so the $4 million estimate cannot be checked. Cost estimates at this stage are uncertain and should include a contingency.
  6. Scepticism: the note comes from the IT director, who may favour the project. The board should ask for independent challenge of benefit claims.
  7. Next step: once the business case is approved, prepare a PID setting objectives, scope, budget, governance, roles and risks as the baseline.

Answer: The board should not approve the $4 million yet. It should ask for a full business case with measurable objectives, named sponsor, options, costs, benefits and risks. After approval, a PID should set the baseline for planning and control.

Example 2

A project has a business case with an initial outlay of $500,000 at time 0 and net cash inflows of $200,000 a year for three years, starting at the end of year 1. The cost of capital is 10%. Management also expects better brand image. Evaluate whether the project should proceed.

Show the solution
  1. Annuity factor for 3 years at 10% is (1 − 1.10^-3) ÷ 0.10. 1.10^3 = 1.331, so 1.10^-3 = 0.7513. (1 − 0.7513) ÷ 0.10 = 2.487.
  2. Present value of inflows = 200,000 × 2.487 = $497,400.
  3. NPV = 497,400 − 500,000 = −$2,600.
  4. The NPV is slightly negative, so on financial grounds alone the project marginally fails to meet the 10% return.
  5. The result is close to zero, so small changes in assumptions could make it positive or more negative. Test sensitivity of inflows and cost.
  6. Non-financial benefit: the better brand image is real but hard to measure. It should not outweigh a negative NPV unless management can estimate its value.
  7. Recommendation: do not proceed on the current numbers. Ask whether the cost can be reduced or inflows raised, or whether the brand benefit can be evidenced and valued.

Answer: NPV is approximately −$2,600, so the project does not meet the 10% required return. Because the figure is marginal, test sensitivities and try to value the brand benefit before a final decision. As presented, it should not proceed.

Exam tips

  • Always name the stage the project is at before you advise. Examiners reward answers that fit the scenario.
  • Treat the business case as the key test of initiation. Cover options, benefits, costs, risks and strategic fit, not only a calculation.
  • Challenge optimistic figures and weak sponsorship. This earns professional skills marks for scepticism and analysis.
  • End with a clear recommendation and conditions. Unclear advice loses marks even when the analysis is good.
  • If the requirement is a report to the board, use a clear layout and short sections. Communication is marked.

Practice questions from Leading and managing projects

Project Life Cycle and Project Initiation in other exams

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

Project Life Cycle and Project Initiation: frequently asked questions

What are the stages of the project life cycle for ACCA SBL?

A common model is initiation, planning, execution with monitoring and control, and closure. Some texts label them differently. State the model you are using and apply it to the scenario.

What is the difference between a business case and a PID?

The business case justifies the project and helps decide whether it should start. The PID sets out how the approved project will be run, including scope, budget, governance and roles. The PID usually follows approval of the business case.

What should a PID contain?

It normally covers objectives, scope, deliverables, constraints, assumptions, budget, timescale, governance, roles and responsibilities, and key risks. It also refers back to the business case. It is used as a baseline for later control.

How do I write a business case in the exam?

Explain the need, the options including doing nothing, the costs and benefits, the main risks and your recommendation. Use figures from the scenario. Show both financial and non-financial factors, and comment on how reliable the estimates are.