Evaluating Vonage ahead of its IPO!

Last updated on: February 22, 2006 at 6:02 am by Desh Kapoor

Evaluating Vonage ahead of its IPO! 2006-02-22T06:02:23-06:00 Desh Kapoor

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Here is an interesting analysis of Vonage – the VoIP pioneer!

The 5 Keys To Estimating NPV
Customer NPV models generally have 5 key pieces of data. Below I have identified each piece of data and described what, if any data is available from Vonage.

Net acquisition costs per customer. Acquisition costs are probably the most important part of an NPV model. In the S1, Vonage claims that its marketing cost per customer in Q3 05 was $209. This is a bit understated though because this figure does not include the costs associated with deploying customer premise equipment (ATAs) which appear as “Direct Cost of Goods Sold” in the financials. These costs in turn are somewhat offset by “Customer Equipment and Shipping” revenue. Including these additional figures results in a line acquisition cost of $233.24, which is further reduced to $203.25 by the activation fee of $29.99. The actual cost is probably a bit higher because Vonage accounts for cash incentives and rebates as a contra against revenue, but these costs don’t appear to be highly significant right now so I am going to go with a $203.25 cost in my model.

Average customer life. The key determinant of average customer life is what’s commonly known as “churn”. The higher the churn, the lower the average customer life, the less aggregate cash flow a given customer will generate. In the S1, Vonage inexplicably decided to calculate churn based on customers as opposed to lines, even though it doesn’t provide any statistics on how many customers it has each quarter. That said, it’s possible to calculate the line churn easily and it has been 2.1%/month for the past two quarters. At this churn rate, the average customer life is roughly 4.2 years. According to the S1, Vonage is assuming a 5 year average customer life as that is how long they are choosing to amortize their activation fees. I am going to be generous and give them their 5 year customer life under the assumption their accountants signed off on it so it and it’s not that far from the range they have been running lately.

Average yearly customer revenues. With fixed rate monthly subscriptions, Vonage’s revenue/line tends to be relatively stable although it has been declining over time thanks to price cuts. In Q3 2005, the average monthly telephony revenue per line was $24.84 or about $298/year. This includes a small portion of the activation fees, so I am going to use a $292/year figure to account for the activation fees after doing some rough estimates.

Operating margins before customer acquisition costs. In an NPV analysis you have to separate out customer acquisition costs from on-going operating costs in order to determine what the “out year” margins are on customer cash flows. In Vonage’s case, when you strip out all of the marketing costs as well as all the equipment costs and revenues, you get an operating margin of 5.5% in Q3 05. This is down sharply from Q1 of 05 when operating margin before marketing costs peaked at 22.2%. It’s not completely clear why margins have declined so much (they should be increasing) but it’s possible that one-time costs associated with the IPO and some e911 requirements led to a spike in expenses. In light of this, I am going to give them the benefit of the doubt and use a 20% operating margin in Year 1 although it will be very interesting to see what direction these margins go in Q4.

Discount Rates. Discount rates are a fairly subjective matter when it comes to NPV analyses. At a minimum, discount rates should at least be set to the expected rate of inflation so that you have a “real dollar” cash flow. However, most organizations use a discount rate in excess of inflation, usually one that is either their Weighted Average Cost of Capital (WACC) or some targeted premium to WACC (to create economic value and/or sustain their premium market valuations). For high risk private companies a 10%+ discount rate is typical. In my online trading models I used to set the discount rate equal to the market consensus long term growth rate estimate (which was usually in the 20-25% range) under the conservative (and somewhat convoluted) theory that this meant people were expecting the company to grow earnings 25% a year and thus any NPV analysis should reflect those expectations. I don’t know what Vonage’s market value will be, nor do I know it’s WACC, but I do know that they have used a lot of venture capital to fund their build out and the long term IRR of early stage venture capital is around 18%. Given this I am going to use a discount rate of 18% even though this is admittedly mixing apples and oranges when it comes to finance theory.

One last assumption I have to make is what will happen to annual revenues and margins in the “out years”. Vonage has already cut prices several times and it stands to reason that they may do so again in the future. In addition, pre-marketing operating margins are likely to change in the future, although margin pressure from price cuts may be more than offset by the benefits of increased operating scale. For example, in the late 1990’s many of the online trading firms ran pre-marketing operating margins in the 20-30% range, but now those margins are now in the 40-50% range thanks to scale effects. To account for these dynamics, I am going to assume a 5% year decline in revenue and a 5% year increase in operating margins (which leads to a 24.3% pre-marketing operating margin 5 years out). I have no idea what these will actually be but I think that these are reasonable guesses**.**

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