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Costco Wholesale (COST) Tax Rate (2016 - 2026)

Costco Wholesale filings provide 18 years of Tax Rate readings, the most recent being 25.21% for Q1 2026.

  • On a quarterly basis, Tax Rate fell 97.0% to 25.21% in Q1 2026 year-over-year; TTM through Feb 2026 was 24.97%, a 24.0% increase, with the full-year FY2025 number at 25.13%, up 77.0% from a year prior.
  • Tax Rate hit 25.21% in Q1 2026 for Costco Wholesale, up from 22.53% in the prior quarter.
  • In the past five years, Tax Rate ranged from a high of 27.1% in Q3 2023 to a low of 22.03% in Q4 2024.
  • Median Tax Rate over the past 5 years was 25.36% (2022), compared with a mean of 24.99%.
  • Biggest five-year swings in Tax Rate: tumbled -399bps in 2024 and later surged 409bps in 2025.
  • Costco Wholesale's Tax Rate stood at 22.94% in 2022, then rose by 7bps to 24.55% in 2023, then fell by -10bps to 22.03% in 2024, then grew by 2bps to 22.53% in 2025, then rose by 12bps to 25.21% in 2026.
  • The last three reported values for Tax Rate were 25.21% (Q1 2026), 22.53% (Q4 2025), and 25.64% (Q3 2025) per Business Quant data.