Costco Wholesale Corp (COST) operating KPIs
COSTNasdaqRetail-Variety StoresFiscal year ends August 30
Financials through Q4 FY2026, quarter ended Aug 30, 2026Last filing: 10-K on Oct 7, 2026Score 17/3057% above fair value
$1012.28+16.20 (+1.63%)
Close on Oct 30, 2026Market cap $448.93BP/E 48.8Yield 0.55%
Costco Wholesale effective income tax rate (%)
Annual figures from Costco Wholesale's filings and investor materials
Latest, FY2026
24.7%
Period ended Aug 30, 2026
Change on a year earlier
-0.4 pts
25.1% in FY2025
History
11 years
Since FY2016
Sources
9
Documents cited below
Annual history
Hover a value to see the sentence it was read from; calculated values show their formula
| Period | Ended | Effective income tax rate (%) | Year on year | Source |
|---|---|---|---|---|
| FY2026 | Aug 30, 2026 | 24.7% | -0.4 pts | Form 10-K (filed 2026-10-07) ↗ |
| FY2025 | Aug 31, 2025 | 25.1% | +0.7 pts | Form 10-K (filed 2026-10-07) ↗ |
| FY2024 | Sep 1, 2024 | 24.4% | -1.5 pts | Form 10-K (filed 2026-10-07) ↗ |
| FY2023 | Sep 3, 2023 | 25.9% | +1.3 pts | Form 10-K (filed 2025-10-08) ↗ |
| FY2022 | Aug 28, 2022 | 24.6% | +0.6 pts | Form 10-K (filed 2024-10-09) ↗ |
| FY2021 | Aug 29, 2021 | 24.0% | -0.4 pts | Form 10-K (filed 2023-10-11) ↗ |
| FY2020 | Aug 30, 2020 | 24.4% | +2.1 pts | Form 10-K (filed 2022-10-05) ↗ |
| FY2019 | Sep 1, 2019 | 22.3% | -6.1 pts | Form 10-K (filed 2021-10-06) ↗ |
| FY2018 | Sep 2, 2018 | 28.4% | -4.4 pts | Form 10-K (filed 2020-10-07) ↗ |
| FY2017 | Sep 3, 2017 | 32.8% | -1.5 pts | Form 10-K (filed 2019-10-11) ↗ |
| FY2016 | Aug 28, 2016 | 34.3% | – | Form 10-K (filed 2018-10-26) ↗ |
Cite this data
StockData. (2026). Costco Wholesale Effective income tax rate (%), annual FY2016–FY2026 [Data set]. Compiled from Costco Wholesale SEC filings and investor materials. https://stockdatahq.com/stocks/cost/kpis/effective-tax-rate
See every metric in the Costco Wholesale KPI table. Data updated Oct 24, 2026.