How do you assess whether a company's dividend growth rate is sustainable?

Assessing dividend growth sustainability is critical because the Gordon Growth Model (V = D1 / (r - g)) is hypersensitive to g. A 1% overestimate in g can inflate the intrinsic value by 20-30%.

Framework for Sustainability Analysis:

1. Sustainable Growth Rate Formula:

g = b x ROE

Where b = retention ratio (1 - payout ratio) and ROE = return on equity.

If a company has ROE of 15% and retains 60% of earnings:

g = 0.60 x 15% = 9.0%

2. Check Against Earnings Growth:

Dividend growth cannot sustainably exceed earnings growth. If dividends have grown at 12% but EPS at only 5%, the payout ratio is rising, and the dividend growth rate must eventually converge to the earnings growth rate.

3. Free Cash Flow Coverage:

Dividends paid from free cash flow are sustainable. Dividends exceeding FCF require borrowing or asset sales — a red flag.

FCF Dividend Coverage = Free Cash Flow / Total Dividends Paid

A ratio below 1.0 for consecutive years signals unsustainable dividends.

Example — Haverford Consumer Products:

Red Flags:

• EPS declining while DPS increasing
• Payout ratio rising from 50% to 82%
• FCF coverage fell below DPS in 2025 ($1.20 < $2.13)

This company is likely to cut its dividend within 1-2 years.

4. Industry Context:

Utilities and REITs can sustain high payout ratios (70-90%) because of stable cash flows. Technology companies typically need lower payouts (20-40%) to fund reinvestment.

CFA Exam Application: When given a vignette, always check whether the dividend growth assumption is consistent with the sustainable growth rate and FCF coverage before accepting a GGM valuation.

Practice identifying dividend traps in our CFA equity question bank.