Costco Wholesale (COST) Tax Rate (2009 - 2026)

Costco Wholesale (COST) has reported Tax Rate for 18 consecutive years, with 25.39% the latest figure, recorded in Q2 2026.

• For the quarter ending Q2 2026, Tax Rate fell 85.0% year-over-year to 25.39%; the trailing twelve-month figure through May 2026 stood at 24.8% (up 6.0% YoY), and the FY2025 full-year result was 25.13%, up 77.0% from the prior year.
• Tax Rate grew to 25.39% in Q2 2026 per COST's latest filing, from 25.21% in the prior quarter.
• Across five years, Tax Rate topped out at 27.1% in Q3 2023 and bottomed at 22.03% in Q4 2024.
• Historically, Tax Rate has averaged 25.01% across 5 years, with a median of 25.37% in 2026.
• The sharpest annual moves came in 2024 and 2025: Tax Rate tumbled 399 bps in 2024, then jumped 409 bps in 2025.
• Over 5 years, Tax Rate stood at 22.94% in 2022, then rose by 7 bps to 24.55% in 2023, then slipped by 10 bps to 22.03% in 2024, then gained by 2 bps to 22.53% in 2025, then rose by 13 bps to 25.39% in 2026.
• According to Business Quant data, Tax Rate over the past three periods registered 25.39%, 25.21%, and 22.53% for Q2 2026, Q1 2026, and Q4 2025 respectively.