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Comcast Corp. (NASDAQ:CMCSA)

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DuPont Analysis: Disaggregation of ROE, ROA, and Net Profit Margin

Microsoft Excel

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Two-Component Disaggregation of ROE

Comcast Corp., decomposition of ROE

Microsoft Excel
ROE = ROA × Financial Leverage
Dec 31, 2025 = ×
Dec 31, 2024 = ×
Dec 31, 2023 = ×
Dec 31, 2022 = ×
Dec 31, 2021 = ×

Based on: 10-K (reporting date: 2025-12-31), 10-K (reporting date: 2024-12-31), 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31).


The period under review demonstrates significant fluctuations in financial performance, particularly concerning profitability and leverage. Return on Equity (ROE) experienced considerable volatility, while Return on Assets (ROA) showed a generally improving trend. Financial Leverage exhibited a more moderate pattern of change.

Return on Assets (ROA)
ROA decreased from 5.13% in 2021 to 2.09% in 2022, indicating a decline in the efficiency of asset utilization in generating profits. However, a substantial recovery was observed in subsequent years, with ROA increasing to 5.81% in 2023, 6.08% in 2024, and reaching 7.34% in 2025. This suggests improved operational efficiency and profitability in later periods.
Financial Leverage
Financial Leverage increased from 2.87 in 2021 to 3.18 in 2022 and 3.20 in 2023, signifying a greater reliance on debt financing. A slight decrease to 3.11 was noted in 2024, followed by a more pronounced decline to 2.81 in 2025. This indicates a reduction in the company’s use of debt relative to equity in the most recent year.
Return on Equity (ROE)
ROE mirrored the volatility observed in ROA, declining sharply from 14.73% in 2021 to 6.63% in 2022. A strong rebound occurred in 2023, with ROE rising to 18.61%, and continued to increase to 18.92% in 2024 and 20.64% in 2025. The fluctuations in ROE are directly influenced by the combined effects of ROA and Financial Leverage. The initial decline in 2022 was likely driven by the decrease in ROA, while the subsequent increases were supported by both improving ROA and, initially, increasing leverage. The continued ROE growth in 2024 and 2025 occurred despite decreasing leverage, indicating a stronger contribution from improved asset efficiency.

The interplay between ROA and Financial Leverage demonstrates a dynamic relationship. While increased leverage can amplify ROE, the observed trend suggests that improvements in core operational profitability, as reflected in ROA, are becoming a more significant driver of overall equity returns.


Three-Component Disaggregation of ROE

Comcast Corp., decomposition of ROE

Microsoft Excel
ROE = Net Profit Margin × Asset Turnover × Financial Leverage
Dec 31, 2025 = × ×
Dec 31, 2024 = × ×
Dec 31, 2023 = × ×
Dec 31, 2022 = × ×
Dec 31, 2021 = × ×

Based on: 10-K (reporting date: 2025-12-31), 10-K (reporting date: 2024-12-31), 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31).


The period under review demonstrates significant fluctuations in the components contributing to overall Return on Equity (ROE). A notable divergence in performance is observed between 2022 and the surrounding years.

Net Profit Margin
The Net Profit Margin experienced a substantial decrease from 12.17% in 2021 to 4.42% in 2022. However, a strong recovery is then evident, with margins increasing to 12.66% in 2023, 13.09% in 2024, and reaching 16.17% in 2025. This indicates improving profitability in the latter part of the analyzed period.
Asset Turnover
Asset Turnover exhibited a modest increase from 0.42 in 2021 to 0.47 in 2022. It then stabilized, remaining relatively consistent at 0.46 in both 2023 and 2024, before experiencing a slight decline to 0.45 in 2025. This suggests a generally stable efficiency in utilizing assets to generate revenue.
Financial Leverage
Financial Leverage generally increased from 2.87 in 2021 to 3.20 in 2023, indicating a greater reliance on debt financing. A slight decrease to 3.11 is observed in 2024, followed by a more pronounced reduction to 2.81 in 2025, suggesting a move towards a more conservative capital structure.
Return on Equity (ROE)
ROE mirrored the trend in Net Profit Margin, declining sharply from 14.73% in 2021 to 6.63% in 2022. A substantial recovery then commenced, with ROE increasing to 18.61% in 2023, 18.92% in 2024, and culminating in 20.64% in 2025. This demonstrates a strong positive correlation between profitability and overall returns to equity holders.

The decline in ROE in 2022 appears primarily driven by the significant reduction in Net Profit Margin, despite a concurrent increase in Asset Turnover and Financial Leverage. The subsequent recovery in ROE is largely attributable to the rebound in Net Profit Margin, with relatively stable Asset Turnover and a slight decrease in Financial Leverage contributing to the overall improvement.


Five-Component Disaggregation of ROE

Comcast Corp., decomposition of ROE

Microsoft Excel
ROE = Tax Burden × Interest Burden × EBIT Margin × Asset Turnover × Financial Leverage
Dec 31, 2025 = × × × ×
Dec 31, 2024 = × × × ×
Dec 31, 2023 = × × × ×
Dec 31, 2022 = × × × ×
Dec 31, 2021 = × × × ×

Based on: 10-K (reporting date: 2025-12-31), 10-K (reporting date: 2024-12-31), 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31).


The five-component DuPont analysis reveals significant fluctuations in the drivers of Return on Equity (ROE) between 2021 and 2025. Overall, ROE demonstrates a volatile pattern, initially declining sharply before recovering and ultimately surpassing its initial level. This movement is attributable to shifts in profitability, efficiency, and financial leverage.

Tax Burden
The tax burden exhibited considerable variability. It decreased from 0.73 in 2021 to 0.55 in 2022, suggesting a lower effective tax rate, before increasing to 0.74 in 2023. A further increase to 0.85 in 2024 was observed, followed by a slight decrease to 0.77 in 2025. This indicates changes in the company’s tax position and potentially the impact of tax law changes.
Interest Burden
The interest burden remained relatively stable, fluctuating between 0.71 and 0.86. A decrease from 0.82 in 2021 to 0.71 in 2022 was followed by a rise to 0.84 in 2023. The subsequent years saw minor variations, ending at 0.86 in 2025. This suggests consistent management of interest-bearing liabilities.
EBIT Margin
The EBIT margin experienced the most dramatic shift. It decreased substantially from 20.36% in 2021 to 11.22% in 2022, indicating a significant decline in operating profitability. A strong recovery occurred in 2023, with the margin returning to 20.44%, and continued to improve, reaching 24.67% in 2025. This suggests successful cost management or revenue growth initiatives.
Asset Turnover
Asset turnover remained relatively consistent, ranging from 0.42 to 0.47. A slight increase from 0.42 in 2021 to 0.47 in 2022 was followed by a gradual decline to 0.45 in 2025. This indicates a stable, though modestly decreasing, efficiency in utilizing assets to generate revenue.
Financial Leverage
Financial leverage increased from 2.87 in 2021 to 3.20 in 2023, indicating a greater reliance on debt financing. It then decreased to 3.11 in 2024 and further to 2.81 in 2025, suggesting a reduction in debt relative to equity. This change in leverage impacted the overall ROE.

The decline in ROE in 2022 was primarily driven by the substantial decrease in the EBIT margin, despite a slight increase in asset turnover and financial leverage. The subsequent recovery and surpassing of the initial ROE level in 2025 were largely attributable to the significant improvement in the EBIT margin, coupled with moderate changes in the other components. The interplay between profitability, efficiency, and leverage demonstrates the complex dynamics influencing the company’s overall return to shareholders.


Two-Component Disaggregation of ROA

Comcast Corp., decomposition of ROA

Microsoft Excel
ROA = Net Profit Margin × Asset Turnover
Dec 31, 2025 = ×
Dec 31, 2024 = ×
Dec 31, 2023 = ×
Dec 31, 2022 = ×
Dec 31, 2021 = ×

Based on: 10-K (reporting date: 2025-12-31), 10-K (reporting date: 2024-12-31), 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31).


The period under review demonstrates significant fluctuations in profitability and efficiency metrics, ultimately impacting overall asset utilization. A notable divergence in Net Profit Margin is observed, while Asset Turnover remains relatively stable. These movements collectively influence Return on Assets, exhibiting an improving trend over the analyzed timeframe.

Net Profit Margin
The Net Profit Margin experienced a substantial decline from 12.17% in 2021 to 4.42% in 2022. However, a strong recovery is evident, with the margin increasing to 12.66% in 2023 and further to 13.09% in 2024. This upward trajectory continues into 2025, reaching a peak of 16.17%. This suggests improving cost control or pricing power in recent years.
Asset Turnover
Asset Turnover exhibits a more consistent pattern. It increased from 0.42 in 2021 to 0.47 in 2022, then stabilized around 0.46 for 2023 and 2024. A slight decrease to 0.45 is noted in 2025. This indicates a generally stable level of revenue generation relative to the asset base, with minor fluctuations.
Return on Assets (ROA)
Return on Assets mirrors the combined effect of the Net Profit Margin and Asset Turnover. Following the decline in Net Profit Margin, ROA decreased from 5.13% in 2021 to 2.09% in 2022. The subsequent improvements in both Net Profit Margin and, initially, Asset Turnover drove ROA upwards, reaching 5.81% in 2023 and 6.08% in 2024. The continued increase in Net Profit Margin, despite a slight decrease in Asset Turnover, resulted in a further increase in ROA to 7.34% in 2025. This demonstrates the significant impact of profitability on overall asset performance.

The analysis indicates that changes in Net Profit Margin are the primary driver of fluctuations in Return on Assets during this period. While Asset Turnover contributes to ROA, its relative stability suggests that improvements in profitability are crucial for enhancing overall asset utilization.


Four-Component Disaggregation of ROA

Comcast Corp., decomposition of ROA

Microsoft Excel
ROA = Tax Burden × Interest Burden × EBIT Margin × Asset Turnover
Dec 31, 2025 = × × ×
Dec 31, 2024 = × × ×
Dec 31, 2023 = × × ×
Dec 31, 2022 = × × ×
Dec 31, 2021 = × × ×

Based on: 10-K (reporting date: 2025-12-31), 10-K (reporting date: 2024-12-31), 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31).


The period under review demonstrates fluctuating performance across key financial metrics impacting Return on Assets (ROA). A notable pattern emerges from the interplay of profitability, efficiency, and financial leverage components. Overall, ROA exhibits an increasing trend, though with intermediate volatility.

EBIT Margin
The EBIT Margin experienced a significant decline from 2021 to 2022, falling from 20.36% to 11.22%. This represents a substantial reduction in operating profitability. However, the margin rebounded strongly in 2023, reaching 20.44%, and continued to improve through 2025, culminating in 24.67%. This suggests successful cost management or pricing strategies in the later years of the period.
Asset Turnover
Asset Turnover remained relatively stable throughout the period, fluctuating between 0.42 and 0.47. A slight increase was observed from 0.42 in 2021 to 0.47 in 2022, followed by a modest decline to 0.45 in 2025. This indicates consistent, though not dramatically improving, efficiency in utilizing assets to generate revenue.
Tax Burden
The Tax Burden displayed variability. It decreased from 0.73 in 2021 to 0.55 in 2022, indicating a lower proportion of pre-tax income retained after taxes. It then increased to 0.74 in 2023, followed by a peak of 0.85 in 2024, before decreasing slightly to 0.77 in 2025. These fluctuations suggest changes in effective tax rates or tax planning strategies.
Interest Burden
The Interest Burden remained relatively high and stable, ranging from 0.71 to 0.86. A slight decrease was observed from 0.82 in 2021 to 0.71 in 2022, but it subsequently increased to 0.86 in 2025. This indicates a consistent level of interest expense relative to earnings before interest and taxes, potentially reflecting a stable debt structure.

The initial decline in ROA from 2021 to 2022 was primarily driven by the significant drop in EBIT Margin, despite a slight improvement in Asset Turnover. The subsequent recovery and growth in ROA from 2023 to 2025 are attributable to the strong rebound and continued improvement in EBIT Margin, coupled with relatively stable Asset Turnover. The Tax and Interest Burdens appear to have a moderating effect on ROA, with fluctuations impacting the overall return.

The increasing ROA trend in the later years suggests improved operational efficiency and profitability, outweighing the impact of consistent interest expense and fluctuating tax obligations. Continued monitoring of the EBIT Margin and Asset Turnover will be crucial for sustaining this positive trajectory.


Disaggregation of Net Profit Margin

Comcast Corp., decomposition of net profit margin ratio

Microsoft Excel
Net Profit Margin = Tax Burden × Interest Burden × EBIT Margin
Dec 31, 2025 = × ×
Dec 31, 2024 = × ×
Dec 31, 2023 = × ×
Dec 31, 2022 = × ×
Dec 31, 2021 = × ×

Based on: 10-K (reporting date: 2025-12-31), 10-K (reporting date: 2024-12-31), 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31).


The period under review demonstrates considerable fluctuation in profitability metrics, particularly concerning the relationship between operating performance and ultimate net income. A notable divergence exists between the EBIT margin and the net profit margin, influenced by shifts in tax and interest burdens.

Net Profit Margin
The net profit margin experienced a significant decline from 2021 to 2022, falling from 12.17% to 4.42%. This was followed by a recovery, reaching 12.66% in 2023 and further increasing to 13.09% in 2024. The most recent year, 2025, shows continued improvement, with the net profit margin reaching 16.17%. This suggests increasing efficiency in converting revenue to profit after all expenses.
EBIT Margin
The EBIT margin mirrors some of the volatility seen in the net profit margin, though to a lesser extent. It decreased substantially from 20.36% in 2021 to 11.22% in 2022, then rebounded to 20.44% in 2023. A slight decrease to 18.69% occurred in 2024, followed by a substantial increase to 24.67% in 2025. This indicates core operational profitability is improving, but is not directly translating to net income at a consistent rate.
Tax Burden
The tax burden fluctuated considerably. It began at 0.73 in 2021, decreased to 0.55 in 2022, then rose to 0.74 in 2023, increased further to 0.85 in 2024, and settled at 0.77 in 2025. The lower tax burden in 2022 partially offset the decline in the EBIT margin, but did not fully prevent the drop in net profit margin. The increase in 2024 likely contributed to the slower growth in net profit margin despite a positive EBIT margin.
Interest Burden
The interest burden remained relatively stable throughout the period, ranging from 0.71 to 0.86. It decreased from 0.82 in 2021 to 0.71 in 2022, then increased to 0.84 in 2023 and 0.82 in 2024, before rising to 0.86 in 2025. While not as volatile as the tax burden, the increasing trend in the latter years may have incrementally impacted net profitability.

The disparity between the EBIT margin and net profit margin highlights the significant impact of non-operating expenses, specifically taxes and interest, on overall profitability. The substantial improvement in net profit margin in 2025 appears to be driven by both a strong EBIT margin and a more favorable tax burden compared to 2024.