Price-to-cash-flow: everything depends on the sector

2026-06-23 · By Lubin Danilo, founder of Lubin Investment

The P/FCF ratio (price divided by free cash flow) only makes sense when compared within the same sector. A SaaS company at 44× can be cheaper than an insurer at 5× if its growth is four times faster. What matters is the price you pay per point of expected growth.

• P/FCF (price divided by free cash flow) measures how much you pay for each dollar of cash generated.
• A high multiple in SaaS reflects strong growth and very recurring cash flows — not necessarily overvaluation.
• A low multiple in insurance reflects a mature, cyclical sector — not necessarily a bargain.
• The real question: how much are you paying per point of annual free cash flow growth?
• ServiceNow at 44× with +20%/year growth can outperform an insurer at 5× with +5%/year over 10 years.

What is P/FCF?

P/FCF, or Price to Free Cash Flow, is a stock valuation ratio. It is calculated simply: divide the company's market capitalization (the total price of all its shares) by its annual free cash flow (the money it actually generates after paying for its investments). If a company is worth $1 billion and generates $100 million in free cash flow, its P/FCF is 10×. Concretely, it means you are paying $10 for every $1 of annual cash flow.

Why this ratio rather than the classic P/E (Price to Earnings)? Because free cash flow is much harder to manipulate accounting-wise than net profit. A company can show profits while having cash flow problems. With P/FCF, we look at the money actually coming into the business.

The problem: comparing apples and oranges

The classic mistake is comparing P/FCF ratios across different sectors. When I see ServiceNow (NOW) at 44× and an insurer like Mercury General (MCY) at 3.9×, my natural reflex is to think insurance is ten times cheaper. That is wrong. It would be like comparing the speed of a high-speed train and a cargo ship and saying the cargo ship is "too slow" — they do not do the same job.

Each sector has its own valuation logic, driven by its growth rate, cyclicality, quality of cash flows, and capital requirements. Let us look at the main families.

Why SaaS deserves a high multiple

SaaS (Software as a Service) refers to subscription-based software sold online — think ServiceNow, Shopify, or Intuit. These companies have three characteristics that justify a high multiple. First, growth: they increase their free cash flow by 15 to 30% per year, versus 5 to 7% for a mature sector. Second, recurrence: an annual subscription renews automatically in 90% of cases — this cash flow is nearly guaranteed. Third, operating leverage: each new customer costs very little to serve (no factory, no inventory), so FCF margins improve structurally with scale.

One dollar of SaaS free cash flow is intrinsically worth more than one dollar of cyclical free cash flow, because it is more predictable, growing, and improving over time. That is why the market accepts paying 44× for ServiceNow or 85× for Shopify.

Why insurance structurally carries a low multiple

P&C (property & casualty) insurance is a mature sector. Premium growth is correlated with inflation and demographics — we are talking 5 to 8% per year in the best cases. But there is an important subtlety: the "insurance float." Insurers collect premiums upfront and reimburse them later as claims. This intermediate cash (the float) technically belongs to policyholders, not the company. Apparent free cash flow can therefore be artificially high during premium collection periods, and collapse when claims arrive (natural disasters, litigation waves).

A low P/FCF in insurance is therefore not necessarily a bargain: it reflects limited growth, real cyclicality, and lower-quality cash flow than SaaS. Progressive (PGR) at 7.4× is an excellent company — but this multiple does not compare with ServiceNow.

Sector comparison table

The formula that changes everything: P/FCF divided by growth

The real question is not "what is the P/FCF?" but "how many years of cash flow are you paying per point of expected annual growth?" The formula is simple: P/FCF ÷ expected FCF CAGR (where CAGR stands for Compound Annual Growth Rate, expressed as %). This ratio — which we can call the growth-adjusted ratio — tells you whether you are being adequately compensated for the growth you are buying.

Concrete example: ServiceNow at 44× P/FCF with an estimated FCF CAGR of 22% gives 44 ÷ 22 = 2.0. Progressive at 7.4× with a 10% CAGR gives 7.4 ÷ 10 = 0.74. Which is cheaper? Progressive, based on this ratio alone. But ServiceNow is not twice as expensive as it appears — it offers a quality and durability of cash flow growth that Progressive structurally cannot match. This ratio is a comparison tool, not an absolute truth.

REITs: a special case

REITs (Real Estate Investment Trusts) like Realty Income (O) or STAG Industrial show P/FCF ratios of 14 to 15×. But beware: for REITs, standard free cash flow understates the economic reality. We use AFFO (Adjusted Funds From Operations) instead, a measure that accounts for real estate depreciation. A P/FCF of 14× on a REIT growing at 4%/year gives a growth-adjusted ratio of 3.5 — that is high, but the dividend yield (often 4 to 6%) partially compensates for the low capital gain potential.

Extreme cases: OMAB and FUTU

Some P/FCF ratios below 1× can mean two very different things. OMAB (Mexican airports) at 0.71× reflects an exceptional situation: a cash flow peak tied to highly profitable airport concessions and a low stock market valuation. FUTU Holdings (Asian online broker) at 0.34× reflects a major geopolitical risk discount (exposure to China and Hong Kong). In both cases, a low P/FCF does not automatically mean the stock is cheap — you need to understand why the market applies that discount.

How I use it in my screener

In our Lubin Investment screener, we compare a company's P/FCF only to the median within its sector. A SaaS company with a P/FCF of 20× can receive a good valuation score if the sector median is 30×. The same 20× for an insurance company would be alarming. We then cross this ratio with the historical 3- and 5-year FCF CAGR to calculate the growth-adjusted ratio. It is this double filter that allows us to identify stocks combining quality and reasonable valuation.

The moral of the story: never compare P/FCF ratios across different sectors without adjustment. A single number says nothing — it is the sectoral context and its relationship with expected growth that make all the difference.

FAQ

What exactly is free cash flow?

Free cash flow is the money a company generates after paying its operating expenses and capital expenditures (purchases of equipment, software, etc.). It is the money the company could theoretically return to shareholders or reinvest to grow.

Is a low P/FCF always a buy signal?

No. A low P/FCF can reflect weak growth, high cyclicality, disruption risk, or poor cash flow quality. Always compare to the sector median and cross-reference with expected growth.

Why does SaaS deserve a higher multiple than industry?

Because SaaS cash flows are recurring (subscriptions renewed automatically), fast-growing (15-30%/year), and improve with scale (operating leverage). Each dollar of SaaS FCF is more predictable and growing than a dollar of cyclical industrial FCF.

How do you compare stocks from different sectors?

By dividing P/FCF by the expected FCF CAGR (compound annual growth rate). This growth-adjusted ratio allows for a fairer comparison. But nothing replaces qualitative analysis of the sector and business model.

Is ServiceNow at 44 times cash flow not risky?

It is a high multiple that prices in strong expected growth. The main risk: if growth slows to 10%/year instead of 20%/year, the stock should be significantly repriced downward. It is a bet on the sustainability of growth — documented, but real.

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About the author

Written by Lubin Danilo, founder of Lubin Investment. A self-taught individual investor, I have analyzed stocks through their fundamentals for several years and invest my own money with this method. I codified it into a tool that judges a company's quality and its price separately, using criteria drawn from the financial literature (Warren Buffett, Michael Mauboussin, Aswath Damodaran).