Costco Wholesale Corp. (NASDAQ:COST)

Total merchandise inventories exhibit a general upward trajectory over the six-year period, increasing from US$ 14,215 million in 2021 to US$ 19,324 million in 2026. The growth pattern is characterized by periodic fluctuations, with notable increases in 2022 and 2024, offset by moderate contractions in 2023 and 2025.

United States Inventory Trends

The United States represents the primary driver of inventory volume. A significant increase occurred between 2021 and 2022, rising from US$ 10,248 million to US$ 13,160 million. While the region experienced volatility in 2023 and 2025, the long-term trend remains positive, concluding at US$ 13,707 million in 2026.

Canadian Inventory Performance

Inventory levels in Canada mirror the fluctuations seen in the US market. After a peak of US$ 1,966 million in 2022 and a subsequent decline to US$ 1,579 million in 2023, the region entered a phase of steady growth, reaching its highest level of US$ 2,188 million by 2026.

International Market Expansion

The "Other International" segment demonstrates the most consistent and stable growth profile. In contrast to the North American markets, this segment experienced uninterrupted annual increases throughout the entire period, growing from US$ 2,511 million in 2021 to US$ 3,429 million in 2026.

Aggregate Inventory Composition

The overall growth in merchandise inventories is heavily weighted toward the US market. However, the consistent expansion of international inventories suggests a strategic broadening of the global footprint, which provides a stabilizing effect against the more volatile inventory swings observed in the domestic and Canadian markets.

Analysis of the financial transition from LIFO to FIFO accounting reveals a concentrated impact on the balance sheet and income statement primarily during the 2022 and 2023 periods, followed by a period of convergence where reported and adjusted values align.

Balance Sheet Adjustments

A significant upward adjustment is observed in August 2022, where merchandise inventories were increased by 438 million US dollars. This adjustment directly elevated current assets from 32,696 million to 33,134 million US dollars and total assets from 64,166 million to 64,604 million US dollars. Correspondingly, total stockholders' equity saw a parallel increase of 438 million US dollars, reflecting the valuation difference inherent in the FIFO method compared to LIFO.

Net Income Fluctuations

The conversion impact extended to net income, with a positive adjustment of 438 million US dollars in 2022, raising the figure to 6,282 million US dollars. Conversely, an adjustment in September 2023 resulted in adjusted net income being reduced to 5,854 million US dollars from a reported 6,292 million US dollars, indicating a realignment of the LIFO reserve impact on earnings during that fiscal cycle.

Asset and Equity Growth Trends

Beyond the specific accounting adjustments, a consistent growth trajectory is evident across all primary metrics. Total assets expanded from 59,268 million US dollars in 2021 to 89,045 million US dollars by 2026. Similarly, total stockholders' equity experienced substantial growth, rising from 17,564 million to 35,803 million US dollars over the analyzed period.

Profitability and Inventory Trajectory

Net income attributable to the company demonstrates steady upward momentum, growing from 5,007 million US dollars in 2021 to 9,226 million US dollars in 2026. Merchandise inventories followed a general upward trend, increasing from 14,215 million US dollars to 19,324 million US dollars, despite a temporary contraction observed in 2023.

An analysis of the financial ratios from 2021 to 2026 reveals a general convergence between reported and adjusted figures, indicating that the impact of inventory valuation methods on financial performance diminished over the observed period. While discrepancies were evident in the middle of the timeframe, the ratios aligned perfectly by 2024, suggesting a stabilization in inventory costs or a shift in accounting impact.

Liquidity and Asset Management

The current ratio remained stable, fluctuating within a narrow range between 0.97 and 1.07. There is virtually no variance between reported and adjusted current ratios, implying that inventory valuation adjustments have a negligible effect on the company's short-term liquidity position. Total asset turnover showed an upward trend from 3.24 in 2021 to a peak of 3.57 in 2024, before moderating to 3.34 by 2026.

Profitability Metrics

Reported net profit margins demonstrate a consistent growth trajectory, rising from 2.61% in 2021 to 3.10% in 2026. Significant variances between reported and adjusted margins occurred in 2022 and 2023; in 2022, the adjusted margin was higher (2.82% vs 2.62%), whereas in 2023, the adjusted margin was lower (2.46% vs 2.65%). By 2024, these figures converged and remained identical through 2026.

Return on Investment and Leverage

Return on Assets (ROA) exhibited steady improvement, increasing from 8.45% to 10.36% over the six-year period. Return on Equity (ROE) was more volatile, peaking at 31.19% in 2024 before declining to 25.77% in 2026. Financial leverage shows a clear downward trend, decreasing from 3.37 in 2021 to 2.49 in 2026, indicating a reduction in the reliance on debt to finance assets.

The discrepancy between reported and adjusted ratios for ROE and ROA was most prominent in 2022 and 2023. In 2022, adjustments led to an increase in both ROE and ROA, suggesting that the reported figures were conservative due to inventory valuation. Conversely, the 2023 adjustments reduced these returns, indicating a reversal in the cost dynamics. The total elimination of the gap between reported and adjusted ratios starting in 2024 signifies that the LIFO reserve or similar inventory valuation adjustments no longer influence the company's reported financial health.

The financial trajectory indicates a general expansion of current assets and a stable, though lean, liquidity position over the analyzed period. A consistent upward trend in asset accumulation is observed, despite a temporary contraction in 2024.

Current Asset Trends

Reported current assets increased from US$ 29,505 million in August 2021 to US$ 46,582 million by August 2026. This growth was steady until September 2024, when assets declined to US$ 34,246 million from the previous year's US$ 35,879 million. A significant acceleration in asset growth occurred between August 2025 and August 2026, with assets rising by approximately US$ 8,202 million in a single year.

Liquidity Ratio Performance

The current ratio remained closely aligned with the 1.00 threshold, suggesting a disciplined approach to working capital management. A liquidity dip is evident in September 2024, where the ratio fell to 0.97, indicating that current liabilities exceeded current assets. However, liquidity recovered in the following periods, reaching 1.03 in August 2025 and 1.06 by August 2026.

Impact of Adjustments

Adjusted current assets and the resulting adjusted current ratio largely mirror reported values, with a specific deviation occurring in August 2022. In that period, adjusted current assets were recorded at US$ 33,134 million compared to the reported US$ 32,696 million, which marginally elevated the adjusted current ratio from 1.02 to 1.04. Beyond this instance, the adjusted and reported metrics are identical, suggesting that adjustments to current assets had a negligible impact on overall liquidity interpretation for the majority of the timeframe.

The adjusted net profit margin demonstrates an overall upward trajectory over the analyzed period, growing from 2.61% in 2021 to a projected 3.10% by 2026. While the reported net profit margin maintained a consistent year-over-year increase, the adjusted figures exhibited temporary volatility before aligning with the reported growth trend.

Adjusted Net Profit Margin Volatility (2021-2023)

Between August 2021 and September 2023, the adjusted net profit margin experienced fluctuations. An initial increase to 2.82% in 2022 was followed by a decline to 2.46% in 2023, representing the lowest margin point in the sequence. This period is characterized by a divergence between reported and adjusted figures, specifically in 2022 when the adjusted margin exceeded the reported margin, and in 2023 when it fell below it.

Stabilization and Expansion (2024-2026)

Beginning in September 2024, a period of steady growth and convergence is observed. The adjusted net profit margin rose to 2.95% and is projected to reach 3.00% in 2025 and 3.10% in 2026. During this phase, the adjusted and reported margins become identical, indicating a reduction in the impact of non-recurring or adjusting items on the bottom line.

Correlation with Adjusted Net Income

The movement in the adjusted net profit margin is closely mirrored by the adjusted net income. After a dip to 5,854 million in 2023, adjusted net income entered a phase of accelerated growth, scaling from 7,367 million in 2024 to a projected 9,226 million by 2026. This suggests that the margin expansion is supported by a substantial increase in absolute profitability.

The financial data indicates a consistent expansion of the total asset base alongside a fluctuating trend in asset utilization efficiency over the six-year period ending August 30, 2026.

Adjusted Total Asset Growth

Total assets experienced a steady upward trajectory, increasing from US$ 59,268 million in 2021 to US$ 89,045 million by 2026. This represents a significant growth in the resource base, with the most pronounced increase occurring between 2025 and 2026, where assets grew by approximately US$ 11.9 billion.

Adjusted Total Asset Turnover Trends

The adjusted total asset turnover ratio exhibited an initial growth phase, rising from 3.24 in 2021 to a peak of 3.57 in 2024. This movement indicates an improvement in the capacity to generate revenue relative to the assets employed. However, a downward trend emerged following the 2024 peak, with the ratio declining to 3.50 in 2025 and further to 3.34 in 2026.

Asset Utilization Efficiency

The decline in the turnover ratio during the final two years suggests that the growth in total assets began to outpace the growth in revenue generation. While the 2026 ratio of 3.34 remains above the 2021 baseline of 3.24, the peak operational efficiency achieved in 2024 was not sustained as the asset base expanded toward the US$ 89 billion mark.

Comparative Analysis of Reported and Adjusted Metrics

A high degree of correlation is observed between reported and adjusted figures. The adjusted total asset turnover closely mirrors the reported turnover across all periods, with only a marginal deviation noted in 2022. This suggests that the adjustments made to total assets had a negligible impact on the resulting efficiency ratios.

The financial trajectory from 2021 to 2026 is characterized by a consistent expansion of the balance sheet and a general reduction in financial leverage. Total assets grew from 59,268 million US$ in 2021 to 89,045 million US$ by 2026, reflecting a steady increase in the company's resource base. This growth was accompanied by a significant increase in stockholders' equity, which more than doubled over the period, rising from 17,564 million US$ to 35,803 million US$.

Adjusted Financial Leverage Trends

The adjusted financial leverage ratio demonstrates a clear downward trend, decreasing from 3.37 in August 2021 to 2.49 by August 2026. This decline indicates a systemic shift toward a more conservative capital structure and a reduced reliance on debt relative to equity to finance total assets.

Analysis of Leverage Fluctuations

A temporary deviation in the deleveraging trend is observed in September 2024, where the financial leverage ratio increased to 2.96 from 2.75 in the previous year. This spike correlates with a decrease in reported stockholders' equity to 23,622 million US$, suggesting a temporary contraction in the equity base or a specific capital allocation event during that fiscal year.

Comparative Impact of Adjustments

The variance between reported and adjusted financial leverage is minimal and concentrated primarily in the 2022 period. In August 2022, the adjusted financial leverage was 3.06 compared to a reported 3.11, resulting from a slight upward adjustment in stockholders' equity to 21,080 million US$. For all other periods from 2023 through 2026, the reported and adjusted leverage ratios are identical, indicating that adjustments have no material impact on the long-term leverage profile.

Adjusted net income and stockholders' equity have both exhibited significant growth over the six-year period ending August 30, 2026. While earnings have trended upward, the adjusted return on equity (ROE) has displayed volatility, reflecting a shifting relationship between profit growth and capital accumulation.

Adjusted Net Income Trends

Adjusted net income grew from 5,007 million US dollars in 2021 to 9,226 million US dollars in 2026. A temporary contraction occurred in 2023, where income fell to 5,854 million US dollars from 6,282 million US dollars in the previous year, before resuming a strong growth trajectory through the end of the period.

Adjusted Stockholders' Equity Growth

Total adjusted equity expanded from 17,564 million US dollars in 2021 to 35,803 million US dollars by 2026. This expansion was characterized by a general upward trend, interrupted by a minor decrease in 2024, when equity fell to 23,622 million US dollars from 25,058 million US dollars in 2023.

Adjusted Return on Equity (ROE) Performance

The adjusted ROE peaked in 2024 at 31.19% following a significant trough of 23.36% in 2023. From 2024 to 2026, a gradual downward trend is observed, with ROE decreasing to 25.77%. This decline persists despite the continuous increase in net income during those years, indicating that the expansion of the equity base has outpaced the growth rate of earnings.

An analysis of the financial performance from 2021 to 2026 reveals a consistent upward trajectory in both profitability and asset accumulation, with a general improvement in asset utilization efficiency over the period.

Adjusted Net Income Trends

Adjusted net income demonstrated strong overall growth, rising from 5,007 million US$ in 2021 to 9,226 million US$ by 2026. While a slight contraction occurred in 2023, where income dropped to 5,854 million US$, the subsequent three years showed accelerated growth, with the 2026 figure representing an 84.2% increase over the 2021 baseline.

Adjusted Total Asset Expansion

Total adjusted assets expanded steadily throughout the analyzed timeframe, increasing from 59,268 million US$ in 2021 to 89,045 million US$ in 2026. This continuous growth indicates a sustained investment in the company's infrastructure and resource base.

Adjusted Return on Assets (ROA) Performance

The adjusted ROA exhibited a general upward trend with some volatility. Starting at 8.45% in 2021, the ratio peaked at 10.55% in 2024. A temporary decline to 8.48% was observed in 2023, coinciding with the dip in adjusted net income. From 2024 to 2026, the ROA remained relatively stable, ending the period at 10.36%, suggesting that the company has maintained its efficiency in generating profits from its expanded asset base.

Comparison of Reported and Adjusted Metrics

Discrepancies between reported and adjusted figures were most prominent in 2022 and 2023. In 2022, adjusted net income was higher than reported net income (6,282 million US$ versus 5,844 million US$), resulting in a higher adjusted ROA of 9.72% compared to the reported 9.11%. Conversely, in 2023, the adjusted net income was lower than the reported figure, leading to a decrease in the adjusted ROA to 8.48%. For the years 2021, 2024, 2025, and 2026, reported and adjusted values were identical.