Growth Metrics

White Mountains Insurance (WTM) Tax Rate (2016 - 2025)

White Mountains Insurance (WTM) has 17 years of Tax Rate data on record, last reported at 9.56% in Q3 2025.

  • For Q3 2025, Tax Rate rose 472.0% year-over-year to 9.56%; the TTM value through Sep 2025 reached 16.68%, up 1195.0%, while the annual FY2021 figure was 16.23%, 158.0% up from the prior year.
  • Tax Rate reached 9.56% in Q3 2025 per WTM's latest filing, up from 7.31% in the prior quarter.
  • Across five years, Tax Rate topped out at 34.6% in Q3 2023 and bottomed at 18.73% in Q2 2024.
  • Average Tax Rate over 5 years is 7.43%, with a median of 6.86% recorded in 2022.
  • Peak YoY movement for Tax Rate: crashed -3666bps in 2021, then surged 2986bps in 2022.
  • A 5-year view of Tax Rate shows it stood at 11.98% in 2021, then soared by 299bps to 23.87% in 2022, then skyrocketed by 45bps to 34.6% in 2023, then crashed by -86bps to 4.84% in 2024, then surged by 97bps to 9.56% in 2025.
  • Per Business Quant database, its latest 3 readings for Tax Rate were 9.56% in Q3 2025, 7.31% in Q2 2025, and 13.26% in Q1 2025.