Iron Mountain (IRM) Tax Rate (2009 - 2026)

Iron Mountain (IRM) has 18 years of Tax Rate data on file, last reported at 15.4% in Q1 2026.

• For the quarter ending Q1 2026, Tax Rate fell 3235.0% year-over-year to 15.4%; the trailing twelve-month figure through Mar 2026 stood at 19.99% (down 1248.0% YoY), and the FY2025 full-year result was 27.91%, up 301.0% from the prior year.
• Tax Rate climbed to 15.4% in Q1 2026, from 10.74% 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.
• A 5-year average of 12.67% and a median of 15.4% in 2026 frame the typical range for Tax Rate.
• Peak annual rise in Tax Rate reached 7445 bps in 2025, while the deepest fall reached 8804 bps in 2025.
• Tracing IRM's Tax Rate over 5 years: stood at 12.16% in 2022, then surged by 94 bps to 23.6% in 2023, then plunged by 37 bps to 14.93% in 2024, then fell by 28 bps to 10.74% in 2025, then surged by 43 bps to 15.4% in 2026.
• Business Quant data shows IRM's Tax Rate at 15.4% in Q1 2026, 10.74% in Q4 2025, and 16.14% in Q3 2025.