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CA Intermediate · Financial Management and Strategic Management

Investment Decisions for CA Intermediate: Chapter Study Guide

Investment Decisions (capital budgeting) is how a firm decides which long-term projects to accept. You estimate incremental after-tax cash flows, then apply techniques such as payback, ARR, NPV, PI, IRR and MIRR. Show the cash flow table, discount at the right rate, then state the decision rule.

What this chapter covers

Investment Decisions is about one question: should the firm spend money now on a project that pays back over several years? You answer it by estimating the cash flows the project adds, then judging them with a set of techniques. Some ignore the time value of money (payback, ARR). Others use it (discounted payback, NPV, PI, IRR, MIRR).

The chapter builds in layers. First comes the process and the cash flow estimate, because every technique uses that table. Then come the simple methods, then the discounted methods, then special situations: limited funds, projects with unequal lives, and uncertain cash flows. Most questions in the exam combine two or three of these in one problem.

It connects to the rest of Paper 6 Section A. Time value of money and the cost of capital feed directly into the discount rate. Leverage and capital structure affect that rate. Working capital often appears inside project cash flows. In Section B, Strategic Management, the same idea appears in words: strategic choices are investment choices at a larger scale.

This chapter is calculation-heavy and highly scoreable. The method is mechanical: build a cash flow table, discount, apply the rule. If you practise the format, you earn step marks even when one figure is wrong. The same skills (present value, annuity factors, interpretation) also help in MCQs, where a quick NPV or payback check can be done in a minute. Weak preparation here costs marks in both the 30 marks of MCQs and the 70 marks of written answers.

Investment Decisions: topics in the order to study them

  1. 1Capital Budgeting: Meaning and ProcessIt gives the vocabulary and the stages of a project decision, so later techniques make sense.
  2. 2Estimating Cash Flows for ProjectsEvery technique uses the cash flow table, so get this right before anything else.
  3. 3Payback Period and Discounted PaybackThese are the simplest methods and teach you to read the cash flow table cumulatively.
  4. 4Accounting Rate of Return (ARR)It uses profit rather than cash, so learn it next to see the contrast with cash-based methods.
  5. 5Net Present Value (NPV) and Profitability IndexNPV is the core method of the chapter, and PI is a direct extension of it.
  6. 6Internal Rate of Return (IRR) and MIRRIRR needs the NPV idea and trial-and-error discounting, so it follows NPV.
  7. 7Capital Rationing and Unequal Project LivesThese use NPV and PI to choose among projects, so you need those first.
  8. 8Risk Analysis in Capital BudgetingIt adjusts the earlier methods for uncertainty, so study it last as an add-on.

How to prepare Investment Decisions

Treat this chapter as a skill, not a theory. You learn it by building tables again and again until the layout is automatic.

  1. Read the process and the cash flow rules once, then write your own checklist: initial outlay, working capital, depreciation tax shield, salvage value, working capital recovery.
  2. Practise only the cash flow table for five or six questions. Do not calculate NPV yet. Check that you treat depreciation as a non-cash item and use after-tax figures.
  3. Learn the present value factor table use. Practise picking the right year factor and annuity factor quickly, since errors here ruin whole answers.
  4. Solve one question per technique, then solve mixed questions that ask for payback, NPV, PI and IRR together. Write the decision rule and a one-line conclusion each time.
  5. Practise IRR by interpolation: find two rates giving NPV on either side of zero, then interpolate. Keep the working neat.
  6. Attempt capital rationing, unequal lives and risk questions after the core methods feel easy. Always state your assumption when the question is silent.
  7. Do timed MCQs on decision rules and quick payback or NPV checks. Then redo your wrong written questions a week later.

Common mistakes in Investment Decisions

  • Using accounting profit instead of cash flow in NPV or IRR.

    Fix: Start from profit before depreciation and tax, deduct tax, add back depreciation or add the tax shield, and show each line in the table.

  • Forgetting working capital at the start and its recovery at the end.

    Fix: Add a row for working capital in year 0 and a release row in the final year, unless the question says otherwise.

  • Including sunk costs or ignoring opportunity costs.

    Fix: Ask of each item: does it change if the project is accepted? If not, leave it out. If a resource has an alternative use, include its value.

  • Using the wrong discount factor, such as year 5 factor for a year 4 cash flow, or an annuity factor for uneven flows.

    Fix: Label each year clearly, tick off the factor used, and use annuity factors only for equal flows across consecutive years.

  • Stating the answer without a decision.

    Fix: End every answer with the rule and the conclusion, such as: NPV is positive, so accept the project.

  • Choosing between mutually exclusive projects on IRR alone when NPV and IRR conflict.

    Fix: Remember that NPV measures value added in rupees. Recommend the higher NPV project and explain the conflict briefly.

Last-day revision: Investment Decisions

  • Use incremental, after-tax cash flows, not accounting profit, for NPV, IRR and payback.
  • Ignore sunk costs. Include opportunity costs and working capital changes.
  • Depreciation is non-cash. It matters only through its tax shield: depreciation × tax rate.
  • Payback = years to recover the initial outlay. Accept if it is within the cut-off. It ignores cash flows after payback.
  • Discounted payback uses present values of cash flows, so it is never shorter than simple payback. It may not exist if the discounted flows never recover the outlay.
  • ARR = average accounting profit ÷ average (or initial) investment. State which base you used.
  • NPV = Σ present value of inflows − initial outlay. Accept if NPV > 0.
  • PI = present value of inflows ÷ initial outlay. Accept if PI > 1.
  • IRR is the rate at which NPV = 0. Accept if IRR exceeds the cost of capital.
  • MIRR compounds inflows to the end at the reinvestment rate, then finds the rate that equates this to the outlay.
  • For mutually exclusive projects with conflicting ranks, NPV is the preferred method.
  • With capital rationing, rank by PI for divisible projects and pick the combination with the highest total NPV for indivisible ones.
  • For unequal lives, compare using equivalent annual NPV or cost, or a common life.

Investment Decisions practice questions

Investment Decisions in other exams

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

Investment Decisions: frequently asked questions

Which technique matters most in Investment Decisions?

NPV is the central technique. PI, IRR and discounted payback are all built from the same discounted cash flow idea. If you are strong at NPV, the others become much easier.

Do I need to memorise present value tables?

No. The factors are normally supplied in the question when needed. You must know how to choose the right factor for each year and when an annuity factor can be used.

How do I handle IRR in the exam?

Estimate a rate, compute the NPV, then try a second rate that gives NPV on the other side of zero. Interpolate between the two rates. Show both NPV workings so you earn step marks.

What kind of MCQs come from this chapter?

Expect short calculations such as payback, ARR, simple NPV or PI, and concept questions on decision rules and the limits of each method. Practise solving them quickly, since MCQs carry no negative marking.