Tetra Tech, Inc. (TTEK)

Tetra Tech Revenue

Tetra Tech had revenue of $1.31B in the quarter ending June 28, 2026, a decrease of -4.47%. This brings the company's revenue in the last twelve months to $5.07B, down -7.61% year-over-year. In the fiscal year ending September 28, 2025, Tetra Tech had annual revenue of $5.44B with 4.69% growth.

• Revenue (ttm): $5.07B
• Revenue Growth: -7.61%
• P/S Ratio: 1.95
• Revenue / Employee: $174,347
• Employees: 25,000
• Market Cap: 8.49B

Revenue Chart

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Revenue History

Fiscal Year End	Revenue	Change	Growth
Sep 28, 2025	5.44B	243.91M	4.69%
Sep 29, 2024	5.20B	676.13M	14.95%
Oct 1, 2023	4.52B	1.02B	29.07%
Oct 2, 2022	3.50B	290.54M	9.04%
Oct 3, 2021	3.21B	218.62M	7.30%
Sep 27, 2020	2.99B	-112.46M	-3.62%
Sep 29, 2019	3.11B	143.20M	4.83%
Sep 30, 2018	2.96B	210.79M	7.66%
Oct 1, 2017	2.75B	169.89M	6.58%
Oct 2, 2016	2.58B	284.15M	12.36%
Sep 27, 2015	2.30B	-184.49M	-7.43%
Sep 28, 2014	2.48B	-129.94M	-4.97%
Sep 29, 2013	2.61B	-97.32M	-3.59%
Sep 30, 2012	2.71B	137.93M	5.36%
Oct 2, 2011	2.57B	371.91M	16.90%
Oct 3, 2010	2.20B	-86.25M	-3.77%
Sep 27, 2009	2.29B	142.23M	6.63%
Sep 28, 2008	2.15B	591.37M	38.06%
Sep 30, 2007	1.55B	139.18M	9.84%
Oct 1, 2006	1.41B	135.17M	10.56%
Oct 2, 2005	1.28B	-	-

Data Source: Fiscal.ai Last updated: Jul 31, 2026

Revenue data is provided by Fiscal.ai and updates within minutes after each earnings release, which is every three months for this company.

Update frequency:

Quarterly

Last checked:

Aug 1, 2026

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