Diageo plc: Durable Returns on Capital

Diageo remains one of the highest-quality consumer franchises in Europe. Its portfolio of global spirits brands generates gross margins above 60% and has historically produced returns on invested capital well above its cost of capital.

Over the past decade, however, incremental returns have moderated. Revenue has expanded meaningfully, yet net income today sits near levels seen more than a decade ago. The investment question is no longer about brand durability. It is about capital efficiency and the price paid for stability.

---

1. Capital Efficiency: ROIC and Economic Spread

Returns on invested capital remain comfortably above Diageo’s cost of capital, but the spread has narrowed.

Year	ROIC (ex-goodwill)	WACC	Spread
FY21	21.4%	6.2%	15.2%
FY22	19.6%	6.2%	13.4%
FY23	18.0%	6.2%	11.8%
FY24	16.0%	6.2%	9.8%

The decline reflects:

• Acquisition intensity in premium tequila and gin
• Higher working capital tied to aged inventory
• Slower organic volume growth in developed markets

The spread remains attractive. However, the direction matters. Compounding becomes more dependent on disciplined capital allocation when incremental returns compress.

---

2. Cost of Capital

Valuation was conducted in USD, consistent with Diageo’s reporting currency and global cash flow base.

Capital Structure

• Market value of equity (USD): $63.9bn
• Market value of debt (USD): $22.6bn
• Equity weight: 73.9%
• Debt weight: 26.1%

Market weights were used to reflect current opportunity costs.

---

Cost of Equity

The cost of equity was estimated using CAPM:

• Risk-free rate: 4.3% (US 10-year Treasury)
• Equity risk premium: 4.5% (long-run developed market assumption)
• Beta: 0.76 (3-year adjusted; internal regression yielded 0.71)

Cost of equity:

4.3% + (0.76 × 4.5%) ≈ 7.7%

The higher provider beta was adopted to avoid understating equity risk.

---

Cost of Debt

Cost of debt was triangulated using two approaches:

Method 1 – Backward-looking

• Cash interest / average total debt
• Pre-tax: 4.2%
• After-tax (25% effective rate): 3.1%

Method 2 – Market-implied

• 5Y CDS spread (33bps) + 5Y Treasury (3.96%)
• Pre-tax: 4.3%
• After-tax: 3.2%

The convergence between both methods supports a pre-tax cost of debt around 4.2% to 4.3%.

---

WACC

Blending equity and debt components:

• Cost of equity: 7.7%
• After-tax cost of debt: 3.1%
• WACC: 6.5%

For a global branded consumer business with investment-grade credit and a sub-1.0 beta, a 6% to 7% range is economically reasonable.

---

3. DCF Valuation

Base Case Assumptions

• Revenue growth: 4.5%
• EBIT margin: 31%
• Terminal growth: 2.0%
• WACC: 6.5%

Implied Valuation

• Enterprise Value: $96.9bn
• Equity Value: $72.9bn
• Implied Value per Share: $32.71 (≈ £24.37)
• Current Price: £21.10
• Implied Upside: ~15%

Intrinsic value is driven more by sustained mid-single-digit cash flow growth than by multiple expansion.

---

4. Sensitivity Analysis

Valuation is most sensitive to WACC and terminal growth.

Implied Price (USD)

g \ WACC	6.00%	6.25%	6.50%	6.75%	7.00%
1.50%	25.22	23.16	21.32	19.65	18.14
1.75%	27.06	24.79	22.76	20.94	19.30
2.00%	29.14	26.61	24.37	22.37	20.57
2.25%	31.49	28.66	26.17	23.96	21.98
2.50%	34.17	30.98	28.19	25.73	23.55

A 50bps increase in WACC reduces equity value by approximately 8% to 10%. This highlights the importance of disciplined terminal assumptions.

---

5. Scenario Analysis

Scenario	Revenue	EBIT Margin	g	WACC	Implied Price	Upside/Downside
Bear	2.5%	28.7%	2.0%	6.8%	$22.35	-21%
Base	4.5%	31.0%	2.0%	6.5%	$32.71	+15%
Bull	5.5%	33.5%	2.1%	6.5%	$40.14	+42%

The range reflects operating leverage rather than financial engineering.

---

6. Relative Valuation

Method	Applied Multiple	Implied Price	Upside
EV/EBITDA	13.3x	28.96	2%
P/E	17.0x	28.86	2%

Relative multiples suggest limited near-term re-rating. The DCF case relies on cash flow durability rather than multiple expansion.

---

7. DuPont Perspective

The moderation in ROE is margin-driven rather than leverage-driven.

• Net margin has compressed from peak levels
• Asset turnover has remained broadly stable
• Equity multiplier has not expanded materially

This suggests operating pressure rather than balance sheet manipulation.

---

8. Cash Conversion Cycle

Spirits businesses carry structurally high inventory due to aging requirements. Premiumisation increases working capital intensity, which partially explains capital absorption in recent years.

Working capital expansion has dampened free cash flow conversion, though this is structural rather than cyclical.

---

Conclusion

Diageo remains a high-quality compounder with durable brands and attractive returns on capital. The spread over cost of capital has narrowed but remains positive. At current levels, the shares offer moderate upside if mid-single-digit growth and margin stability are sustained.

The investment case rests on disciplined capital allocation and preservation of economic spread, rather than a return to peak growth rates.

---

This article is adapted from my MSc Finance dissertation at Queen’s University Belfast, which included a full financial model, ROIC decomposition, and detailed valuation framework.