Costco Wholesale Corporation (COST): gross margin, 10 filed years
Gross margin at Costco Wholesale Corporation was 12.8% in FY2026, the newest filed year. Across the 10 computed years from FY2017 it ranged from 10.8% (FY2019) to 13.3% (FY2017), with a median of 12.8%.
Tonight's figure on the company page: 12.8%, recomputed 2026-10-15. The table is each filed year on its own terms, with the formula below; the current figure may use trailing twelve months or, where the explainer says so, a different denominator.
Year by year
| Fiscal year | Gross margin | Read from |
|---|---|---|
| FY2017 | 13.3% | 10-K, filed 2017-10-18 |
| FY2018 | 13.0% | 10-K, filed 2018-10-26 |
| FY2019 | 10.8% | 10-K, filed 2019-10-11 |
| FY2020 | 13.1% | 10-K, filed 2020-10-07 |
| FY2021 | 12.9% | 10-K, filed 2021-10-06 |
| FY2022 | 12.2% | 10-K, filed 2022-10-05 |
| FY2023 | 12.3% | 10-K, filed 2023-10-11 |
| FY2024 | 12.6% | 10-K, filed 2024-10-09 |
| FY2025 | 12.8% | 10-K, filed 2025-10-08 |
| FY2026 | 12.8% | 10-K, filed 2026-10-07 |
How each year is computed
Gross profit / revenue x 100
Each year is a ratio of lines in that year's filed annual report, with the nightly recompute's own rules for what counts as a filed line. Nothing is estimated, smoothed or filled in: a year that cannot be computed says why.
Read further
A computation on accounts filed with the SEC, not a recommendation and not advice. Past filings do not indicate future results. Risk disclaimer.