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NotesBusiness Management HLTopic 6.5Key components of a business plan, Gantt charts and critical path analysis
Back to Business Management HL Topics
6.5.218 min read

Key components of a business plan, Gantt charts and critical path analysis (Business Management HL)

IB Business Management • Unit 6

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Contents

  • The market analysis and the marketing plan
  • The operations and human resources plans
  • The financial plan
  • Risks, the summary, and one story
  • Gantt charts
  • Critical path analysis: completing the diagram
  • Total float and free float
  • Exam-style question
Page three of the Station Road plan: In 6.5.1 the bank asked Lena and Marco for their plan for a fourth shop, and you saw its order: the summary, the business, the market, how it will work, the finance, the risks.

Now open it. The loan officer turned straight to page three, the market. If nobody buys, no other page matters.

The market analysis answers one question: who will buy, and how many of them are there? It holds the evidence, from research the bakery did itself (primary research, 4.4.1) and from figures others had already published (secondary research, 4.4.2).

What the market analysis showsIn the Station Road plan
The customers (the target market)Commuters on their way to the train, and office workers at lunchtime
How many there are (market size)1,850 people pass the station between 6.30 and 9.00 a.m.; the rail company reports 4,200 passengers a day
Who else sells to them (competitors)Crumbline plc's kiosk in the station sells coffee and a pastry for $3.50
What is changing (trends)A 900-worker office block opens nearby in 2027
The evidenceA count of passers-by, the rail company's figures, and interviews with five office managers about lunches

The marketing plan comes next. The market analysis says who the customers are; the marketing plan says how the shop will win them. It sets out the marketing mix (4.5): what the shop sells, at what price, where and when, and how people will hear about it.

The Station Road marketing plan

1

Product

Bread from Mill Lane, a $3 coffee-and-croissant deal for commuters, and a lunch menu for the offices.

2

Price

Loaves at $3, as in the other three shops. The $3 deal sits 50 cents under Crumbline's $3.50.

3

Place

Next to the station, open from 6.30 a.m. so the early trains are served.

4

Promotion

$15,000 for the first three months: a tasting week, leaflets, a station poster, online adverts and loyalty cards (4.2.2).

Market analysis

  • Who will buy, and how many
  • 1,850 passers-by each morning
  • Crumbline's kiosk already there

Marketing plan

  • How the shop will win them
  • A $3 deal against a $3.50 one
  • $15,000 of launch spending

The sales forecast

  • The number both lead to
  • About 250 loaves and 300 customers a day
  • A target of 150 lunches a day
The foundation: Every number later in the plan starts from the sales forecast, and the sales forecast starts here. A market section built on real evidence makes the whole plan believable.

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After the market, the bank had a second worry: can the bakery actually make and sell all this? Two components answer it. The operations plan says how the products are made and delivered. The human resources plan says who will do the work.

The operations plan coversIn the Station Road plan
Location and premisesA shop next to the station; a $120,000 fit-out of counters, a coffee machine and seating
How the products are madeBread is baked at Mill Lane, not in the shop: 1,450 loaves a night instead of 1,200, the 250 more a day the new shop needs
SuppliersFlour and ingredients from Valley Grain, paid 30 days after delivery
CapacityOne oven bakes 600 loaves an hour; a second $45,000 deck oven is planned
Delivery and opening hoursVans leave Mill Lane at 5 a.m.; the shop opens at 6.30 a.m.
A plan that sells more than it can deliver: Writing the operations plan showed a problem: two vans reach three shops by opening time (3.2.1), and four shops do not fit.

So the plan had to say what happens: lease a third van for $750 a month. An operations plan that skips a problem like this makes the sales forecast impossible to deliver.

The human resources plan (a workforce plan, 2.1.1) sets out the people: how many are needed, with what skills, how they will be recruited and trained, and who manages them.

The people in the Station Road plan

1

How many

Three people at the counter for the 7 to 8 a.m. rush, fewer later in the day.

2

Recruitment

The shop team is advertised locally; experienced staff can move across from the other three shops.

3

Training

New staff learn the tills and the coffee machine at Park Road before opening. At Mill Lane, Priti trains two more bakers for the bigger night bake.

4

Who manages

Lena and Marco, the directors, answer to the bank; each shop has its own manager, as Aisha runs High Street.

Why the bank reads these pages: A lender does not need to know how to bake bread. It needs to see that someone has worked out how the bread gets made, carried and sold on time, and by whom.

If these pages are vague, the sales forecast may be right and the business may still fail to deliver it.

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The page the bank checks twice: The market pages say people will buy. The financial plan turns that into money: what the project costs, where the money comes from, and whether the cash will cover the repayments.
The financial plan coversIn the Station Road plan
Start-up costs (capital expenditure)$120,000 to fit out the shop
Sources of finance (3.2)A five-year bank loan at 8%: $24,000 of the loan plus $9,600 of interest, $33,600 in the first year
Sales forecastAbout 250 loaves and 300 customers a day, taken from the market analysis
Cash-flow forecast (3.7.2)Cash in and cash out, month by month, for the first months after opening
Profit and payback (3.8)Net cash flows of $30,000 in year one, rising to $38,000 in year five; payback in 3 years 8 months
Break-even (5.5)How many sales the shop needs each month to cover its costs

Of all these, the cash-flow forecast matters most to a lender, because a shop can make a profit over the year and still run out of cash in one month. Here is Marco's forecast for the first three months after opening, in thousands of dollars.

$000Month 1Month 2Month 3
Opening balance846
Cash in303336
Cash out343133
Net cash flow(4)23
Closing balance469

How the bank reads the forecast

1

Month 1

Cash out beats cash in by $4,000: stock, wages and the launch all come at once. The balance falls from $8,000 to $4,000.

2

Months 2 and 3

Sales grow and the balance climbs to $6,000, then $9,000. The cash never runs out.

3

The safety net

If the first month goes worse, the bakery has a $30,000 overdraft limit to fall back on.

4

The payback

$30,000, $32,000 and $34,000 in the first three years make $96,000. The last $24,000 comes 8 months into year four.

A chain of numbers: The market analysis gives the sales forecast. The sales forecast gives the cash in. Cash in, less the costs, shows whether the loan can be repaid.

Change the first number and every number after it moves.

A plan that only shows the good news is hard to trust. The risk assessment lists what could go wrong and what the business would do about each problem.

Risk in the Station Road planWhat Lena's Bakery would do
Fewer lunches than the 150 a day forecast from five interviewsStart with a short lunch menu and review it after three months
Crumbline cuts the price of its $3.50 coffee and pastryKeep the $3 deal, and use the loyalty cards to hold on to commuters
Two vans cannot reach four shops by opening timeLease a third van for $750 a month
A slow first month drains the cashUse the $30,000 overdraft limit
Risks make a plan more believable: A plan with no risks looks as if nobody looked for them. Each risk named with its response shows the lender that the owners have thought ahead.

The responses are a plan B for each risk (a contingency plan).

Two short components sit at the front. The business description says who is asking: Lena's Bakery Ltd, a private limited company run by its directors Lena and Marco, with three shops, a bakehouse and the objective of eight shops within five years (1.3.2). The executive summary then gives the whole plan in brief; it is written last, once every other component exists (6.5.1).

The Station Road executive summary, in five lines

1

The project

A fourth shop on Station Road, opening in September 2026.

2

The market

1,850 people pass the station each morning; a forecast of 250 loaves and 300 customers a day.

3

The money asked for

$120,000 over five years, to fit out the shop.

4

The forecast

Net cash flows of $30,000 in the first year, rising every year after.

5

How it is repaid

From those cash flows: the fit-out pays for itself in 3 years 8 months.

Market analysis

the evidence

  • 150 lunches a day, from five interviews
  • The first month sells 90

Sales forecast

the numbers

  • Lunch sales fall by 60 a day

Cash-flow forecast

the cash

  • Less cash in every month

Repayments

the bank

  • $33,600 in year one is harder to meet
The test of a good plan: Every component tells the same story. The market supports the sales forecast, operations and people can deliver it, the finance shows the loan is repaid, and the risks say what happens if it is not.

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Fourteen weeks to opening day: Once the bank agreed the loan, Marco had six jobs to fit in before Station Road opened in September: the lease, the builders, the staff, their training, the leaflets and a tasting week.

He counted back from the opening day, and drew the jobs on one page.

A Gantt chart is a bar chart of a project. Each task is one row. Its bar starts when the task starts and ends when it ends, measured along a timeline in days, weeks or months. It is named after Henry Gantt, the engineer who made it popular more than a century ago.

TaskWeeksWeeks 1 to 14
A Sign the lease and agree the design1 to 3███░░░░░░░░░░░
B Fit out the shop4 to 13░░░██████████░
C Recruit the shop team4 to 7░░░████░░░░░░░
D Train the team at Park Road8 to 10░░░░░░░███░░░░
E Print leaflets, book the station poster4 to 5░░░██░░░░░░░░░
F Tasting week14░░░░░░░░░░░░░█

Reading Marco's chart

1

What happens when

The fit-out, task B, fills weeks 4 to 13: the longest bar on the chart.

2

What runs side by side

In week 4, three jobs start at once: the fit-out, recruiting and the leaflets. Marco can see who is busy when.

3

What comes in order

Training, task D, starts in week 8, only once the team is recruited in weeks 4 to 7.

4

Where we are now

Each week Marco shades what is done. A bar that is behind the date is spotted at once.

What a Gantt chart does well

  • Easy to read. Anyone can see the whole project, and this week's jobs, on one page.
  • Plans people and money. It shows when each task needs staff, builders or cash.
  • Tracks progress. Shaded bars show at a glance what is late.

Where it falls short

  • Hides the links. The bars do not show that training must wait for recruiting.
  • Hides the slack. It does not say which tasks could start later without harm.
  • Only as good as its estimates. Ten weeks for the fit-out is a builder's guess.
Bars for time, not for links: A Gantt chart answers what happens when. To see which tasks must wait for which, and which ones can slip, Marco needs a second tool: critical path analysis.

Critical path analysis (CPA) shows a project as a network. Each task is a line, drawn in the order the tasks must happen. The lines meet at circles called nodes: a node is the moment one task ends and the next can begin. You will be given the outline of the diagram and asked to complete it.

TaskCan startWeeksIts line in the diagram
A Sign the lease and agree the designFirst task3Node 1 to node 2
B Fit out the shopWhen A is complete10Node 2 to node 4
C Recruit the shop teamWhen A is complete4Node 2 to node 3
D Train the team at Park RoadWhen C is complete3Node 3 to node 4
E Print leaflets, book the posterWhen A is complete2Node 2 to node 4
F Tasting weekWhen B, D and E are complete1Node 4 to node 5

Completing the diagram

1

Tasks on the lines

Write each task's letter and duration on its line, such as B 10. Never inside a node.

2

Split each node

Node number in the left half. Top right: the earliest start time. Bottom right: the latest finish time.

3

Forward pass: the ESTs

Start at 0 and work left to right, adding each duration. Where lines meet, take the largest: the next task waits for the slowest.

4

Backward pass: the LFTs

Copy the last EST as the last LFT, then work right to left, taking durations away. Where lines split, take the smallest.

5

The critical path

The tasks with no spare time at all. Mark them with a double line and a key.

NodeEST (forward pass)LFT (backward pass)
100
20 + 3 = 3the smallest of 13 − 10 = 3, 10 − 4 = 6 and 13 − 2 = 11: 3
33 + 4 = 713 − 3 = 10
4the largest of 3 + 10 = 13, 7 + 3 = 10 and 3 + 2 = 5: 1314 − 1 = 13
513 + 1 = 1414, the same as its EST
A, B and F: 14 weeks: The critical path runs A, B, F: sign the lease, fit out the shop, run the tasting week. Along it, every task starts the moment the one before ends.

So the minimum project time is 3 + 10 + 1 = 14 weeks, the EST at the last node. A week lost on the fit-out is a week lost on the opening day.

Checks before you move on

  • The first node reads 0 and 0; the last node's EST and LFT are the same.
  • At a join the EST is the largest total; at a split the LFT is the smallest.
  • Every node on the critical path has EST equal to LFT.
  • The minimum time is the durations along the critical path added up.

Recruiting and training, C and D, take 4 + 3 = 7 weeks, while the fit-out takes 10. So the team has spare time: C and D can run late by up to 3 weeks and the shop still opens on time. That spare time is called float, and there are two kinds.

Total float

  • How long a task can slip without delaying the whole project
  • LFT at its end node − duration − EST at its start node
  • C: 10 − 4 − 3 = 3 weeks

Free float

  • How long a task can slip without delaying the next task
  • EST at its end node − duration − EST at its start node
  • C: 7 − 4 − 3 = 0 weeks
TaskTotal float (weeks)Free float (weeks)What it means for Marco
A, B, F00Critical: any delay delays the opening
C Recruit30A slip here eats D's spare time, though not the opening
D Train33Can start up to 3 weeks late
E Leaflets88Can be done any time from week 4 to week 12
Using the float: Float tells a manager where people and money can be moved from. If the builders fall behind on the fit-out, Marco can pull staff off the leaflets, which have 8 weeks to spare, and put them on the critical tasks.

Shortening a critical task is the only way to shorten the project. Speeding up recruiting does nothing to the opening day.

What CPA does well

  • Finds the tasks that cannot slip, so managers watch them most closely.
  • Gives the minimum time, so the opening date is realistic: 14 weeks.
  • Shows the float, so resources can move to where they are needed.
  • Plans the order, so each task is ready to start when the one before ends.

Where it falls short

  • Built on estimates. If the fit-out takes 12 weeks, not 10, the whole answer changes.
  • Hard to read with many tasks. A big project needs software, and time to keep it up to date.
  • Says nothing about cost or quality. Rushing the builders to save a week may cost more.
  • The critical path can move. A task with float that slips too far becomes critical.
Gantt and CPA together: Marco uses both. The CPA diagram tells him which tasks are critical and how much float the rest have. The Gantt chart turns that into a calendar the whole team can read.

Both are planning tools for one part of the business plan: how the project gets done.
How this comes up: Critical path questions give a table of tasks, each with its duration and the tasks it must wait for, or an outline diagram. The parts are short: complete the diagram and identify the critical path, give the minimum time for the project, calculate the total or free float for one task, then explain one advantage of the method or how float helps meet a deadline.

Questions on the components of a business plan are set as for SL: one component explained, or a whole plan judged in ten marks.

Completing the diagram, in order

  • Tasks on the lines. Each task's letter and duration on its line, never inside a node.
  • Split every node. Node number on the left, EST top right, LFT bottom right.
  • Forward pass. ESTs from left to right; where lines meet, take the largest.
  • Backward pass. LFTs from right to left; where lines split, take the smallest.
  • Mark the critical path. The tasks with no float, shown with a double line and a key.
The trap: the smallest at the join: Where two tasks end at the same node, the next task cannot start until both are done, so the EST is the larger total. Taking the smaller one makes the project look shorter than it can be.

On the way back it flips: where lines split, the LFT is the smaller figure.
IB-style questionComplete[4 marks]

Using Table 1, complete the critical path diagram and identify the critical path.

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