Tetra Tech Inc (TTEK)

Return on total capital

Sep 30, 2025 Sep 30, 2024 Sep 30, 2023 Sep 30, 2022 Sep 30, 2021
Earnings before interest and tax (EBIT) US$ in thousands 408,419 510,416 456,193 340,775 273,560
Long-term debt US$ in thousands
Total stockholders’ equity US$ in thousands 1,779,780 1,830,320 1,403,430 1,183,090 1,234,240
Return on total capital 22.95% 27.89% 32.51% 28.80% 22.16%

September 30, 2025 calculation

Return on total capital = EBIT ÷ (Long-term debt + Total stockholders’ equity)
= $408,419K ÷ ($—K + $1,779,780K)
= 22.95%