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Costco Wholesale (COST) Net Margin (2016 - 2026)

Costco Wholesale filings provide 18 years of Net Margin readings, the most recent being 2.92% for Q1 2026.

  • On a quarterly basis, Net Margin rose 12.0% to 2.92% in Q1 2026 year-over-year; TTM through Feb 2026 was 2.99%, a 10.0% increase, with the full-year FY2025 number at 2.94%, up 5.0% from a year prior.
  • Net Margin hit 2.92% in Q1 2026 for Costco Wholesale, down from 2.97% in the prior quarter.
  • In the past five years, Net Margin ranged from a high of 3.03% in Q3 2025 to a low of 2.43% in Q2 2023.
  • Median Net Margin over the past 5 years was 2.81% (2025), compared with a mean of 2.78%.
  • Biggest five-year swings in Net Margin: fell -18bps in 2023 and later soared 45bps in 2024.
  • Costco Wholesale's Net Margin stood at 2.51% in 2022, then rose by 10bps to 2.75% in 2023, then grew by 5bps to 2.89% in 2024, then increased by 3bps to 2.97% in 2025, then decreased by -2bps to 2.92% in 2026.
  • The last three reported values for Net Margin were 2.92% (Q1 2026), 2.97% (Q4 2025), and 3.03% (Q3 2025) per Business Quant data.