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Iron Mountain (IRM) Tax Rate (2016 - 2025)

Historic Tax Rate for Iron Mountain (IRM) over the last 17 years, with Q4 2025 value amounting to 10.74%.

  • Iron Mountain's Tax Rate fell 41800.0% to 10.74% in Q4 2025 from the same period last year, while for Dec 2025 it was 27.91%, marking a year-over-year increase of 30100.0%. This contributed to the annual value of 27.91% for FY2025, which is 30100.0% up from last year.
  • Per Iron Mountain's latest filing, its Tax Rate stood at 10.74% for Q4 2025, which was down 41800.0% from 16.14% recorded in Q3 2025.
  • In the past 5 years, Iron Mountain's Tax Rate registered a high of 78.83% during Q2 2023, and its lowest value of 60.26% during Q2 2025.
  • In the last 5 years, Iron Mountain's Tax Rate had a median value of 18.6% in 2024 and averaged 15.45%.
  • As far as peak fluctuations go, Iron Mountain's Tax Rate crashed by -3482300bps in 2021, and later skyrocketed by 744500bps in 2025.
  • Iron Mountain's Tax Rate (Quarter) stood at 27.42% in 2021, then crashed by -56bps to 12.16% in 2022, then skyrocketed by 94bps to 23.6% in 2023, then plummeted by -37bps to 14.93% in 2024, then decreased by -28bps to 10.74% in 2025.
  • Its Tax Rate was 10.74% in Q4 2025, compared to 16.14% in Q3 2025 and 60.26% in Q2 2025.