Financial Analysis · Business Analysis Notes

What it is#

The BABOK Guide describes financial analysis as assessing the financial aspects of different investment options in order to recommend a solution. It should include the full costs and benefits of using, maintaining and supporting the solution, and it continues throughout the initiative, not just at the start.

Its main elements, in the BABOK Guide’s terms:

Cost of the change — one-off costs to acquire, build, implement and roll out the solution, including training and business disruption.
Total cost of ownership (TCO) — the cost of the change plus running costs over the solution’s life: licenses, support, maintenance, infrastructure, staff time.
Value realization — when and how benefits actually arrive. Benefits rarely start on go-live day.
Cost–benefit analysis — setting costs and benefits side by side, by period.
Financial calculations:
Return on investment (ROI) — net benefit divided by cost.
Discount rate — the rate used to convert future money into today’s value.
Present value (PV) — what a future amount is worth today.
Net present value (NPV) — the sum of discounted benefits minus discounted costs. Positive means the option earns more than the discount rate.
Internal rate of return (IRR) — the discount rate at which NPV equals zero.
Payback period — how long until cumulative benefits cover the costs.

The BCS book explains why the methods differ. Simple payback is easy to understand but ignores the time value of money. Discounted cash flow and NPV correct for that, and can push the payback point later than the simple calculation suggests. IRR expresses a project as a single percentage you can compare with other uses of the money: if a safe alternative pays more than the project’s IRR, the project is not worth it financially. The book also recommends sensitivity analysis: changing key assumptions to see how the answer moves.

When to use it#

The BABOK Guide uses financial analysis in planning the analysis approach, in prioritizing and assessing changes to requirements, throughout Strategy Analysis, in validating requirements, in Analyze Potential Value and Recommend Solution, and in Recommend Actions to Increase Solution Value. Use it when:

you must choose between investment options or justify one;
benefits can be estimated in money, at least roughly;
decision makers need comparable numbers across options.

Be careful when key benefits are hard to quantify (customer goodwill, compliance, safety). Combine it with non-financial criteria in decision analysis rather than inventing figures. The BABOK Guide also warns that forecasts of future costs and benefits are uncertain, and that neat numbers can create false confidence.

How to do it#

Define the options, always including “do nothing”, and agree the time horizon (often three to five years).
List costs by period: one-off and recurring, internal and external.
List benefits by period: extra revenue, cost savings, avoided costs. Note when each starts.
Agree the discount rate with finance.
Calculate payback, NPV and IRR for each option.
Run sensitivity analysis on the assumptions that drive the result: benefit size, adoption speed, running costs.
Document assumptions and sources for every figure.
Revisit the analysis at decision points and after go-live, comparing forecast with actual.

Example#

The Workshop (a fictional chain of bike-repair workshops) evaluates online booking with status notifications. All figures are invented.

One-off cost (year 0): $60,000 for build, rollout and staff training.
Running cost: $10,000 a year.
Benefits: $40,000 a year from fewer no-shows and less front-desk phone time.
Net benefit: $30,000 a year for three years. Discount rate: 10%.

Year	Net cash flow	Discount factor (10%)	Present value	Cumulative PV
0	-60,000	1.000	-60,000	-60,000
1	30,000	0.9091	27,273	-32,727
2	30,000	0.8264	24,792	-7,935
3	30,000	0.7513	22,539	14,604

Results:

Simple payback: 2 years. Discounted payback: about 2.4 years.
NPV: about $14,600, positive.
IRR: about 23%, well above the 10% discount rate.
Simple ROI over three years: (90,000 − 60,000) / 60,000 = 50%.

Sensitivity: if gross benefits are 30% lower ($28,000 a year), net benefit falls to $18,000 and NPV becomes about −$15,200. Break-even is at roughly $34,100 of gross benefit a year, only about 15% below the estimate. The analyst therefore recommends validating the no-show savings with a pilot at two workshops before committing.

Common mistakes#

Counting only build cost → use total cost of ownership over the full horizon.
Assuming benefits start at go-live → model a ramp-up based on realistic adoption.
Ignoring the time value of money → use NPV, not just simple payback, for multi-year decisions.
Single-point forecasts → show sensitivity and break-even values.
Hidden assumptions → list each assumption with its source and owner.
Analyzing once → update the numbers at each decision gate and compare with actuals after launch.

Template#

Template

Option: <name>      Horizon: <years>      Discount rate: <%>

| Year | One-off costs | Running costs | Benefits | Net | Discount factor | PV | Cumulative PV |
|---|---|---|---|---|---|---|---|
| 0 | | | | | 1.000 | | |
| 1 | | | | | | | |

Payback: ...   NPV: ...   IRR: ...
Key assumptions (source, owner): ...
Sensitivity: break-even when ...

Sources and further reading#

IIBA. A Guide to the Business Analysis Body of Knowledge (BABOK® Guide), version 3. International Institute of Business Analysis, 2015, technique 10.20 “Financial Analysis”.
Watermark Learning. BABOK v3 Study Tables. 2016 (study aid for the BABOK Guide), technique 10.20.
D. Paul, D. Yeates, J. Cadle (eds.). Business Analysis, 2nd ed. BCS, The Chartered Institute for IT, 2010, ch. 13 (payback, discounted cash flow, NPV, IRR, sensitivity analysis).