Capstone: designing a management control system

This final lesson brings the course together by designing a management control system for a real decision facing Cormorant. Lessons 1 to 3 set out the purposes, frameworks and structures of control and the role of budgets; lessons 4 and 5 developed financial measures of investment center performance; lessons 6 to 8 dealt with transfer pricing at home and abroad; lessons 9 and 10 broadened measurement to strategy, operations and sustainability; and lesson 11 tied measures to rewards. A management control system is not a collection of these tools but a package whose parts must fit the strategy, the structure, the people and each other. The capstone shows how to put a package together, test it with numbers and anticipate how managers will respond.

A design process

There is no formula for designing a control system, but a disciplined process helps. The steps below draw on the frameworks of lesson 1, especially Merchant and Van der Stede's objects of control and Simons' levers of control, and on the contingency view that the right design depends on circumstances.

The case: the Comfort Plan

In 2027, Cormorant plans to launch the Comfort Plan, a subscription offering in which Services installs a Cormorant heat pump in a homeowner's house, keeps ownership of the equipment and charges a monthly fee of $60 that covers the heat pump, maintenance and repairs for a 10-year contract. The board sees the plan as a way to accelerate the heat pump strategy, since many homeowners are put off by the up-front cost, and to build recurring revenue. Services will buy heat pumps from Appliances at a transfer price of $2,000, market price to dealers less the dealer selling costs avoided, and spend $1,200 on installation, so each contract requires $3,200 of capital. Annual maintenance averages $120. Services plans 5,000 contracts in 2027. The task is to design the control system for the Comfort Plan and to adjust Cormorant's existing system where necessary.

Step 1: strategy and key uncertainties

The Comfort Plan's success depends on four uncertainties: whether homeowners will sign up at $60 a month; whether they will keep paying for ten years, which depends on customer satisfaction and credit quality; whether the heat pumps' reliability will keep maintenance costs near $120 a year; and whether Services can recruit enough certified technicians. Simons' framework suggests matching levers to these. The beliefs system should express Cormorant's commitment to customers' comfort and to the low-carbon transition. Boundary systems should set credit limits, approval rules and standards for installations. Diagnostic controls should track contracts signed, cancellation rates, maintenance cost per unit and installation quality against targets. And because take-up is the most uncertain element of the strategy, it should be the subject of an interactive control system: a monthly review in which senior management and Services' managers discuss what customers, competitors and installers are saying and adjust the offering.

Step 2: structure and responsibility

Services is currently a profit center, evaluated on controllable margin, because its assets are small. The Comfort Plan changes that: 5,000 contracts a year at $3,200 each adds $16 million of capital in the first year, four times Services' existing invested capital. Following lesson 2, a unit that makes significant investment decisions should be an investment center, accountable for the capital it uses. The Comfort Plan could be set up as a separate investment center within Services, so its results do not obscure the existing installation and maintenance business, with its own general manager reporting to the head of Services.

Step 3: results measures

The obvious financial measure for an investment center is residual income or EVA. But lesson 5 showed that conventional depreciation makes new assets look unprofitable in their early years, and the Comfort Plan is a pure case of this.

# Services' Comfort Plan: one leased heat pump over a 10-year contract ($ per unit, illustrative)
cost = 2_000 + 1_200            # transfer price from Appliances plus installation
fee, upkeep, life, r = 720, 120, 10, 0.10
cash = fee - upkeep
annuity = (1 - (1 + r) ** -life) / r
npv = cash * annuity - cost
print(f"Annual cash flow {cash}; NPV at 10% {npv:,.1f}")
nbv, pv_ri = cost, 0.0
for year in range(1, life + 1):
    dep = cost / life
    ri = cash - dep - r * nbv
    pv_ri += ri / (1 + r) ** year
    if year in (1, 2, 5, 10):
        print(f"Year {year:>2}: straight-line RI {ri:7.1f}")
    nbv -= dep
print(f"PV of straight-line RI {pv_ri:,.1f}")
charge = cost / annuity
print(f"Annuity capital charge {charge:.1f}; level economic profit {cash - charge:.1f} every year")
units = 5_000
print(f"2027 plan of {units:,} units: year-1 RI {units * (cash - cost / life - r * cost) / 1000:,.0f} thousand; NPV {units * npv / 1000:,.0f} thousand")

Annual cash flow 600; NPV at 10% 486.7
Year  1: straight-line RI   -40.0
Year  2: straight-line RI    -8.0
Year  5: straight-line RI    88.0
Year 10: straight-line RI   248.0
PV of straight-line RI 486.7
Annuity capital charge 520.8; level economic profit 79.2 every year
2027 plan of 5,000 units: year-1 RI -200 thousand; NPV 2,434 thousand

Each contract has a positive NPV of $486.70 at a 10 percent cost of capital, and the present value of its residual income equals its NPV, as lesson 5 showed. But with straight-line depreciation and a capital charge on net book value, residual income is negative in years 1 and 2, and the 2027 plan of 5,000 contracts would reduce Services' residual income by $200,000 in its first year. A manager evaluated on annual RI would sign fewer contracts than the strategy requires. Using an annuity capital charge, the economic depreciation approach, gives a level economic profit of $79.20 per contract every year, whose present value also equals the NPV, so the manager's measure is positive from the start.

Financial measures alone are not enough. The scorecard for the Comfort Plan should include leading indicators for each uncertainty: contracts signed and the conversion rate from quotes; cancellations and payment arrears; maintenance cost per unit and heat pump failure rates; certified technicians and first-time fix rate; and net promoter score. Sustainability measures should include the estimated emissions avoided by heat pumps replacing gas furnaces and water heaters. Because Cormorant owns the leased heat pumps, their electricity use also enters its scope 3 inventory as downstream leased assets, a reporting consequence the design should anticipate.

Step 4: transfer pricing

Services buys heat pumps from Appliances. If Appliances has spare capacity, the general rule of lesson 6 says the minimum transfer price is variable cost; if it is selling all it can make to dealers, the minimum is market price less savings, the $2,000 proposed. Because Appliances is expanding heat pump capacity under the strategy, it is likely to have idle capacity in the early years, so $2,000 may overstate the company's incremental cost and make the Comfort Plan look worse than it is. Two options are a two-part tariff, with Services paying Appliances' variable cost per unit plus a fixed fee for reserved capacity (lesson 7), or an analysis at the company level for the investment decision while keeping $2,000 for evaluation. Since both divisions are in the United States, tax considerations do not affect the choice, but if the Comfort Plan expanded to Europe, Cormorant Europe's transfer prices would need to meet the arm's length standard (lesson 8).

Step 5: incentives

The Comfort Plan's contracts run for ten years, but a general manager's tenure may be three or four. An annual bonus on Comfort Plan profit would reward signing contracts regardless of credit quality, with the cancellations arriving after the manager has moved on. Lesson 11's tools address this. A bonus bank, with declared bonuses based on the annuity-based economic profit and adjusted for actual cancellations and arrears, defers payment until the contracts prove sound. Scorecard objectives, such as cancellation rate and net promoter score, carry part of the bonus. And a clawback or deferral provision applies if contract values are later found to have been overstated. Installers and sales staff, whose incentives drive day-to-day behavior, should be rewarded for completed installations that pass quality inspection and for contracts that stay in force for a year, not for contracts signed.

Step 6: action, personnel and cultural controls

Results controls work only for outcomes that can be measured promptly. For the Comfort Plan, credit approval rules, installation standards and safety procedures are action controls: they specify what must be done because the consequences of failure, such as an unsafe installation or a portfolio of bad credits, are serious and appear late. Personnel controls include technician certification, which is also a scorecard measure, and careful hiring for the general manager role. Cultural controls build on Services' existing reputation for customer care. Internal audit should review contract approvals and the data behind cancellation and maintenance statistics, since these drive both the bonus bank and external reporting.

Step 7: fit and side effects

The last step is to test the package as a whole, at the company level as well as for the Comfort Plan. A dashboard that brings together financial, scorecard and carbon measures helps senior management see whether the system is sending consistent signals.

# Cormorant 2026 control dashboard: financial, scorecard and carbon results by division ($000)
rate, carbon_price = 0.10, 100
div = {  # segment margin, invested capital, scope 1+2 tonnes, scorecard result (Components and Services illustrative)
    "Appliances": (3_000, 20_000, 6_000, 0.923),
    "Components": (1_800, 15_000, 4_100, 0.960),
    "Services":   (  900,  4_000, 3_300, 1.035),
}
print(f"{'Division':<11}{'ROI':>7}{'RI':>7}{'Carbon':>8}{'RI after carbon':>17}{'Scorecard':>11}")
for name, (income, capital, tonnes, sc) in div.items():
    ri = income - rate * capital
    carbon = tonnes * carbon_price / 1000
    print(f"{name:<11}{income / capital:>7.1%}{ri:>7,.0f}{carbon:>8,.0f}{ri - carbon:>17,.0f}{sc:>11.1%}")

Division       ROI     RI  Carbon  RI after carbon  Scorecard
Appliances   15.0%  1,000     600              400      92.3%
Components   12.0%    300     410             -110      96.0%
Services     22.5%    500     330              170     103.5%

The dashboard shows how the measures can point in different directions. Appliances has the highest RI but the weakest scorecard, consistent with lesson 9's warning that it may be harvesting the gas water heater business. Components' RI turns negative after a $100-per-metric ton carbon charge, which would make it a target for investment in energy efficiency. Services has the strongest scorecard and high ROI, but its ROI will fall sharply as Comfort Plan capital arrives, which is one more reason to evaluate the plan on residual income with an annuity charge rather than ROI. A good control system does not reduce these signals to a single number; it makes the trade-offs visible and gives managers reasons to act on them.

Finally, the design should anticipate side effects. Appliances might resist supplying Services at less than dealer prices, or favor dealers, so the transfer pricing policy and an arbitration process must be agreed in advance. Dealers might see the Comfort Plan as competition, so the beliefs and boundary systems should address channel conflict. Services' existing managers might feel the Comfort Plan receives attention and capital at their expense. And the whole package should be reviewed after a year, because the key uncertainties will by then be partly resolved and the controls should change with them.