Stock Analysis

Mercury NZ Limited (NZSE:MCY) Shares Could Be 46% Below Their Intrinsic Value Estimate

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Key Insights

  • Using the 2 Stage Free Cash Flow to Equity, Mercury NZ fair value estimate is NZ$11.93
  • Current share price of NZ$6.39 suggests Mercury NZ is potentially 46% undervalued
  • The NZ$6.92 analyst price target for MCY is 42% less than our estimate of fair value

Does the November share price for Mercury NZ Limited (NZSE:MCY) reflect what it's really worth? Today, we will estimate the stock's intrinsic value by estimating the company's future cash flows and discounting them to their present value. One way to achieve this is by employing the Discounted Cash Flow (DCF) model. Before you think you won't be able to understand it, just read on! It's actually much less complex than you'd imagine.

Companies can be valued in a lot of ways, so we would point out that a DCF is not perfect for every situation. If you still have some burning questions about this type of valuation, take a look at the Simply Wall St analysis model.

Crunching The Numbers

We are going to use a two-stage DCF model, which, as the name states, takes into account two stages of growth. The first stage is generally a higher growth period which levels off heading towards the terminal value, captured in the second 'steady growth' period. 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 discount the value of these future cash flows to their estimated value in today's dollars:

10-year free cash flow (FCF) forecast

2026202720282029203020312032203320342035
Levered FCF (NZ$, Millions) NZ$579.0mNZ$592.0mNZ$647.0mNZ$653.0mNZ$671.0mNZ$690.3mNZ$711.9mNZ$735.4mNZ$760.7mNZ$787.5m
Growth Rate Estimate SourceAnalyst x1Analyst x1Analyst x1Analyst x1Analyst x1Est @ 2.87%Est @ 3.13%Est @ 3.31%Est @ 3.44%Est @ 3.52%
Present Value (NZ$, Millions) Discounted @ 7.1% NZ$541NZ$516NZ$527NZ$496NZ$476NZ$457NZ$440NZ$425NZ$410NZ$397

("Est" = FCF growth rate estimated by Simply Wall St)
Present Value of 10-year Cash Flow (PVCF) = NZ$4.7b

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 (3.7%) 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 7.1%.

Terminal Value (TV)= FCF2035 × (1 + g) ÷ (r – g) = NZ$787m× (1 + 3.7%) ÷ (7.1%– 3.7%) = NZ$24b

Present Value of Terminal Value (PVTV)= TV / (1 + r)10= NZ$24b÷ ( 1 + 7.1%)10= NZ$12b

The total value, or equity value, is then the sum of the present value of the future cash flows, which in this case is NZ$17b. The last step is to then divide the equity value by the number of shares outstanding. Relative to the current share price of NZ$6.4, the company appears quite undervalued at a 46% discount to where the stock price trades currently. The assumptions in any calculation have a big impact on the valuation, so it is better to view this as a rough estimate, not precise down to the last cent.

dcf
NZSE:MCY Discounted Cash Flow November 18th 2025

The Assumptions

The calculation above is very dependent on two assumptions. The first is the discount rate and the other is the cash flows. Part of investing is coming up with your own evaluation of a company's future performance, so try the calculation yourself and check your own 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 Mercury NZ 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 7.1%, which is based on a levered beta of 0.800. 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.

See our latest analysis for Mercury NZ

SWOT Analysis for Mercury NZ

Strength
  • Debt is well covered by cash flow.
Weakness
  • Earnings declined over the past year.
  • Interest payments on debt are not well covered.
  • Dividend is low compared to the top 25% of dividend payers in the Electric Utilities market.
Opportunity
  • Annual earnings are forecast to grow faster than the New Zealander market.
  • Trading below our estimate of fair value by more than 20%.
Threat
  • Dividends are not covered by earnings and cashflows.
  • Annual revenue is expected to decline over the next 3 years.

Next Steps:

Whilst important, the DCF calculation is only one of many factors that you need to assess for a company. It's not possible to obtain a foolproof valuation with a DCF model. 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. Can we work out why the company is trading at a discount to intrinsic value? For Mercury NZ, we've put together three essential aspects you should look at:

  1. Risks: As an example, we've found 4 warning signs for Mercury NZ (2 are significant!) that you need to consider before investing here.
  2. Management:Have insiders been ramping up their shares to take advantage of the market's sentiment for MCY'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. The Simply Wall St app conducts a discounted cash flow valuation for every stock on the NZSE every day. If you want to find the calculation for other stocks just search here.

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Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team (at) simplywallst.com.

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.