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 2,592
Capex Intensity 3.1%

Desi Bites’ capex intensity was 5.6% in FY23, peaked at 6.9% in FY24, then dropped 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 17,942.67
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 is how much of each rupee of revenue gets ploughed back into plant. A falling number can mean efficiency — or just a pause between investment cycles.