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Growth Metrics

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

Iron Mountain (IRM) has disclosed Tax Rate for 17 consecutive years, with 10.74% as the latest value for Q4 2025.

  • Quarterly Tax Rate fell 418.0% to 10.74% in Q4 2025 from the year-ago period, while the trailing twelve-month figure was 27.91% through Dec 2025, up 301.0% year-over-year, with the annual reading at 27.91% for FY2025, 301.0% up from the prior year.
  • Tax Rate hit 10.74% in Q4 2025 for Iron Mountain, down from 16.14% in the prior quarter.
  • In the past five years, Tax Rate ranged from a high of 78.83% in Q2 2023 to a low of 60.26% in Q2 2025.
  • Historically, Tax Rate has averaged 15.45% across 5 years, with a median of 18.6% in 2024.
  • Biggest five-year swings in Tax Rate: tumbled -34823bps in 2021 and later surged 7445bps in 2025.
  • Year by year, Tax Rate stood at 27.42% in 2021, then tumbled by -56bps to 12.16% in 2022, then surged by 94bps to 23.6% in 2023, then plummeted by -37bps to 14.93% in 2024, then fell by -28bps to 10.74% in 2025.
  • Business Quant data shows Tax Rate for IRM at 10.74% in Q4 2025, 16.14% in Q3 2025, and 60.26% in Q2 2025.