Estimating The Fair Value Of Tetra Tech, Inc. (NASDAQ:TTEK)

Key Insights

• Tetra Tech's estimated fair value is US$198 based on 2 Stage Free Cash Flow to Equity
• Current share price of US$193 suggests Tetra Tech is potentially trading close to its fair value
• Analyst price target for TTEK is US$200, which is 1.1% above our fair value estimate

How far off is Tetra Tech, Inc. (NASDAQ:TTEK) from its intrinsic value? Using the most recent financial data, we'll take a look at whether the stock is fairly priced by projecting its future cash flows and then discounting them to today's value. The Discounted Cash Flow (DCF) model is the tool we will apply to do this. Before you think you won't be able to understand it, just read on! It's actually much less complex than you'd imagine.

We generally believe that a company's value is the present value of all of the cash it will generate in the future. However, a DCF is just one valuation metric among many, and it is not without flaws. If you want to learn more about discounted cash flow, the rationale behind this calculation can be read in detail in the Simply Wall St analysis model.

View our latest analysis for Tetra Tech

What's The Estimated Valuation?

We're using the 2-stage growth model, which simply means we take in account two stages of company's growth. In the initial period the company may have a higher growth rate and the second stage is usually assumed to have a stable growth rate. To begin with, we have to get estimates of the next ten years of cash flows. Where possible we use analyst estimates, but when these aren't available we extrapolate the previous free cash flow (FCF) from the last estimate or reported value. We assume companies with shrinking free cash flow will slow their rate of shrinkage, and that companies with growing free cash flow will see their growth rate slow, over this period. We do this to reflect that growth tends to slow more in the early years than it does in later years.

Generally we assume that a dollar today is more valuable than a dollar in the future, so we need to discount the sum of these future cash flows to arrive at a present value estimate:

10-year free cash flow (FCF) forecast

	2024	2025	2026	2027	2028	2029	2030	2031	2032	2033
Levered FCF ($, Millions)	US$297.0m	US$392.0m	US$428.5m	US$459.4m	US$485.7m	US$508.6m	US$528.8m	US$547.2m	US$564.2m	US$580.4m
Growth Rate Estimate Source	Analyst x4	Analyst x4	Est @ 9.32%	Est @ 7.21%	Est @ 5.73%	Est @ 4.70%	Est @ 3.98%	Est @ 3.47%	Est @ 3.12%	Est @ 2.87%
Present Value ($, Millions) Discounted @ 6.6%	US$279	US$345	US$354	US$356	US$353	US$347	US$338	US$328	US$317	US$306

("Est" = FCF growth rate estimated by Simply Wall St)
Present Value of 10-year Cash Flow (PVCF) = US$3.3b

We now need to calculate the Terminal Value, which accounts for all the future cash flows after this ten year period. For a number of reasons a very conservative growth rate is used that cannot exceed that of a country's GDP growth. In this case we have used the 5-year average of the 10-year government bond yield (2.3%) to estimate future growth. In the same way as with the 10-year 'growth' period, we discount future cash flows to today's value, using a cost of equity of 6.6%.

Terminal Value (TV)= FCF₂₀₃₃ × (1 + g) ÷ (r – g) = US$580m× (1 + 2.3%) ÷ (6.6%– 2.3%) = US$14b

Present Value of Terminal Value (PVTV)= TV / (1 + r)¹⁰= US$14b÷ ( 1 + 6.6%)¹⁰= US$7.3b

The total value, or equity value, is then the sum of the present value of the future cash flows, which in this case is US$11b. In the final step we divide the equity value by the number of shares outstanding. Compared to the current share price of US$193, the company appears about fair value at a 2.5% discount to where the stock price trades currently. Valuations are imprecise instruments though, rather like a telescope - move a few degrees and end up in a different galaxy. Do keep this in mind.

The Assumptions

The calculation above is very dependent on two assumptions. The first is the discount rate and the other is the cash flows. If you don't agree with these result, have a go at the calculation yourself and play with the assumptions. The DCF also does not consider the possible cyclicality of an industry, or a company's future capital requirements, so it does not give a full picture of a company's potential performance. Given that we are looking at Tetra Tech as potential shareholders, the cost of equity is used as the discount rate, rather than the cost of capital (or weighted average cost of capital, WACC) which accounts for debt. In this calculation we've used 6.6%, which is based on a levered beta of 0.936. Beta is a measure of a stock's volatility, compared to the market as a whole. We get our beta from the industry average beta of globally comparable companies, with an imposed limit between 0.8 and 2.0, which is a reasonable range for a stable business.

SWOT Analysis for Tetra Tech

Looking Ahead:

Although the valuation of a company is important, it shouldn't be the only metric you look at when researching a company. The DCF model is not a perfect stock valuation tool. Rather it should be seen as a guide to "what assumptions need to be true for this stock to be under/overvalued?" For example, changes in the company's cost of equity or the risk free rate can significantly impact the valuation. For Tetra Tech, we've put together three important elements you should look at:

1. Risks: For example, we've discovered 3 warning signs for Tetra Tech that you should be aware of before investing here.
2. Management:Have insiders been ramping up their shares to take advantage of the market's sentiment for TTEK's future outlook? Check out our management and board analysis with insights on CEO compensation and governance factors.
3. Other High Quality Alternatives: Do you like a good all-rounder? Explore our interactive list of high quality stocks to get an idea of what else is out there you may be missing!

PS. Simply Wall St updates its DCF calculation for every American stock every day, so if you want to find the intrinsic value of any other stock just search here.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.