TetraTech (TTEK) Q4 2025 earnings review
Record FY25 Performance Can't Mask Weaker FY26 Outlook
Tetra Tech reported strong underlying Q4 results, successfully navigating the wind-down of its major USAID contracts to cap a record fiscal year. The core business, excluding USAID, grew net revenue 10% and adjusted EPS 29% in the quarter, driven by margin expansion and robust demand in water-related markets. However, this strength is overshadowed by the FY26 guidance, which projects a ~10% decline in reported net revenue and a ~5% decline in EPS. This marks a sharp reversal from prior growth and reflects the full financial impact of the lost USAID work. Management is focused on the successful pivot, highlighting a stronger margin profile and new growth drivers in data center infrastructure and defense.
🐂 Bull Case
The business ex-USAID remains robust, posting 10% net revenue growth in Q4. Strength in State & Local (municipal water up 19%) and new high-growth areas like data centers and defense infrastructure provide a solid foundation.
The elimination of lower-margin USAID work is structurally improving profitability. The Government Services Group (GSG) reported record margins, a trend that should benefit the company's overall earnings power long-term.
With net leverage at a low 0.9x EBITDA and over $1 billion in liquidity, the company has significant capacity for shareholder returns ($250M buyback in FY25) and strategic, accretive M&A to fill the revenue gap.
🐻 Bear Case
The FY26 forecast for a ~10% revenue and ~5% EPS decline is a clear negative. This confirms the USAID exit creates a significant hole that the core business growth cannot immediately fill in the coming year.
Backlog (ex-USAID) has been flat for three consecutive quarters at ~$4.1B. Management cites a shift to a shorter-cycle 'book and burn' federal model, but this reduces long-term visibility and makes the traditional growth indicator less reliable.
The U.S. Commercial segment remains weak, primarily due to a slowdown in renewable energy projects. This headwind, noted for several quarters, offsets some of the strength seen in other areas.
⚖️ Verdict: 🔴
Bearish. While management has done an admirable job navigating the loss of its largest client and the underlying business is healthy, the market is forward-looking. The official FY26 guidance points to a year of contraction in both revenue and earnings. This reversal from strong growth will likely weigh on sentiment until a clear path to resuming top-line growth is demonstrated.
Key Themes
FY26 Guidance Signals a Reversal to Negative Growth
The most significant theme is the negative forward outlook. After a record FY25, guidance for FY26 implies a material step back. Net revenue is guided to $4.05B-$4.25B (midpoint $4.15B), a 10.2% decline from FY25's $4.62B. Similarly, EPS is guided to $1.40-$1.55 (midpoint $1.475), a 5.4% decline from FY25's adjusted EPS of $1.56. This is a clear decelerating trend, moving from strong growth to contraction as the full impact of the USAID contract loss is annualized.
Margin Expansion Driven by Favorable Mix Shift
A key positive is the structural improvement in profitability from exiting low-margin USAID contracts. This was evident in the Government Services Group (GSG), which, despite a reported revenue decline, achieved record margins in Q4. Management noted the higher proportion of fixed-price work (hitting 50% of revenue) and a focus on high-end consulting are also contributing. This trend supports the goal of annual EBITDA margin expansion and provides a partial offset to lower revenues.
New Growth Engine: Water for Data Centers & High-Tech
Management is pivoting the growth narrative towards servicing water-reliant infrastructure. A major focus is the data center market, where a large facility can consume 5 million gallons of water per day, straining municipal systems. Tetra Tech is positioning its expertise in water sourcing, treatment, and digital controls to capture this demand. The company's high-voltage transmission practice, which supports the power needs of these facilities, saw its backlog double year-over-year, indicating strong early traction.
Contradictory Signals: Stagnant Backlog vs. Big Contract Wins
A data point contradicting the positive narrative on federal contract wins is the flat backlog. Despite announcing over $1.2B in new defense contract awards, the ex-USAID backlog has hovered around $4.1B for three quarters (Q2: $4.09B, Q3: $4.15B, Q4: $4.14B). The CEO explained this by citing a shift to shorter-duration federal task orders, creating a 'book and burn' environment. While this may be true, it reduces forward visibility and makes it harder for investors to validate the pipeline's strength.
Durable Demand from State & Local Water Markets
The State & Local market remains a consistent growth driver, growing 19% in Q4, driven by municipal water treatment and digital water modernization. These programs are primarily funded by local bonds and user fees, insulating them from federal budget volatility. With major investments planned in water-stressed states like Texas, Florida, and California, this end market provides a stable foundation for the business.
Other KPIs
Cash generation remains a key strength. Full-year operating cash flow increased 28% YoY and significantly exceeded net income of $248M, indicating high-quality earnings and effective working capital management. The company's industry-leading DSO of 55.7 days reflects excellent project execution and client satisfaction.
The company returned significant capital to shareholders, repurchasing $250M of stock during the year, including $50M in Q4. The dividend was also increased by 12%. With net leverage down to 0.9x EBITDA, the company retains substantial capacity for further returns and strategic M&A in FY26.
The quarter ended with a backlog of $4.14B, essentially flat with the prior two quarters. Management emphasizes this figure is conservative, including only contracted and funded work. However, the lack of growth, coupled with a shift to shorter-duration federal tasking, suggests reported backlog may be a less reliable indicator of future growth than in prior cycles.
Guidance
Reversing. The midpoint of $4.15B implies a 10.2% YoY decline from FY25's $4.62B. This reflects the full-year impact of the USAID contract terminations. Management notes that on a pro-forma basis, excluding USAID and episodic disaster work, the underlying business is expected to grow 5% to 11%.
Reversing. The midpoint of $1.475 implies a 5.4% decline from FY25's adjusted EPS of $1.56. The decline is less severe than the revenue drop, reflecting the positive margin impact of removing lower-margin USAID work from the mix.
Decelerating Sharply. The midpoint of $975M implies a steep decline of approximately 18.5% YoY compared to Q1 FY25 Net Revenue of $1.2B and a 16% sequential decline from Q4 FY25. This sets a weak starting point for the fiscal year.
Key Questions
Bridging the Guidance Gap
Can you quantify the expected revenue headwind in FY26 from the USAID wind-down and the non-repeat of FY25 disaster recovery work? This would help bridge the gap between the reported 10% decline and the guided 5-11% underlying growth.
Backlog as a Leading Indicator
With federal task orders becoming shorter, is reported backlog still the best metric for investors to track forward momentum? Are there alternative metrics, like contract capacity utilization or book-to-burn ratios, that would provide better visibility?
Sustainability of GSG Margins
The GSG segment posted exceptional margins in Q4. How much of this performance was due to the structural benefit of exiting USAID versus temporary factors like high utilization on disaster projects? What is a sustainable operating margin range for this segment in FY26?
Data Center Market Opportunity
You highlighted the data center water market as a major opportunity. Can you size this market for Tetra Tech and discuss the competitive landscape? Are margins for this type of work comparable to your corporate average?