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Tetra Tech (TTEK) Tax Rate: 2009-2025

Historic Tax Rate for Tetra Tech (TTEK) over the last 16 years, with Sep 2025 value amounting to 34.34%.

  • Tetra Tech's Tax Rate fell 227.00% to 26.72% in Q3 2025 from the same period last year, while for Sep 2025 it was 34.34%, marking a year-over-year increase of 628.00%. This contributed to the annual value of 34.34% for FY2025, which is 628.00% up from last year.
  • Per Tetra Tech's latest filing, its Tax Rate stood at 34.34% for FY2025, which was up 22.40% from 28.05% recorded in FY2024.
  • Tetra Tech's 5-year Tax Rate high stood at 34.34% for FY2025, and its period low was 12.75% during FY2021.
  • For the 3-year period, Tetra Tech's Tax Rate averaged around 31.40%, with its median value being 31.80% (2023).
  • Per our database at Business Quant, Tetra Tech's Tax Rate plummeted by 1,097bps in 2021 and then spiked by 1,179bps in 2022.
  • Over the past 5 years, Tetra Tech's Tax Rate (Yearly) stood at 12.75% in 2021, then soared by 1,179bps to 24.54% in 2022, then surged by 726bps to 31.80% in 2023, then slumped by 375bps to 28.05% in 2024, then soared by 628bps to 34.34% in 2025.