What capex intensity means

The last post noted that Britannia’s Free Cash Flow rose year on year partly because capex fell. Capex Intensity turns that observation into its own ratio: what share of revenue does a company have to plough back into fixed assets — plant, equipment, capacity — just to sustain or grow the business?

It’s a read on how capital-hungry a business model is. A telecom or steel company needs to keep spending heavily relative to revenue just to stand still; a strong consumer brand with existing capacity can often grow revenue with comparatively little additional capex.

The formula

Capex Intensity (%) = Capex / Revenue × 100

Worked example: Desi Bites Foods, FY25

  ₹ Lakh
Capex 80
Revenue 2592
Capex Intensity 3.1%

Desi Bites’ capex intensity has actually been falling — 5.6% in FY23, 6.9% in FY24, down to 3.1% in FY25 — consistent with a company that front-loaded plant capacity in its earlier years and is now growing revenue without needing to spend as heavily to support it.

Worked example: Britannia Industries, FY25

From Britannia Industries’ audited consolidated FY25 results (year ended 31 March 2025, filed 8 May 2025). For illustration only.

  ₹ Crore
Capex 374.85
Revenue 17942.67
Capex Intensity 2.1%

That’s down from 3.3% in FY24 — a real, meaningful drop, and now we have the full explanation for last post’s finding: Britannia’s FCF rose year on year mainly because it spent less on capex, not because its underlying operating cash generation improved. Whether that’s a genuinely efficient business needing less reinvestment, or a company simply pausing between expansion cycles, is exactly the kind of question worth watching over the next couple of years rather than settling from one data point.

Common mistakes

  • Comparing capex intensity across industries. A capital-heavy business (telecom, cement, steel) will structurally run a much higher capex intensity than an asset-light one (FMCG, services) — this ratio is most meaningful within an industry or against a company’s own history.
  • Assuming low capex intensity is always a sign of efficiency. It can also mean underinvestment — an ageing plant, a capacity ceiling coming up, or delayed maintenance that eventually becomes an urgent, larger expense.
  • Not separating maintenance capex from growth capex. The same rupee amount means something very different depending on whether it’s replacing worn-out equipment (needed just to stand still) or building new capacity (funding future growth) — a distinction the raw capex figure alone doesn’t make, as flagged already in the cash flow statement post.
  • Reading one year’s dip or spike as a trend. Capex is naturally lumpy — a single large plant project can distort one or two years’ numbers without signalling anything permanent about the business.

Takeaway: capex intensity measures how much of every rupee of revenue a company has to reinvest just to keep running or growing — a falling number can mean real efficiency or a temporary pause between investment cycles, and this closes the Cash Flow Quality module by showing why free cash flow and earnings quality can never be read without also checking what’s happening to capex underneath them.