How to Value an IPO: P/E, P/B, RoCE, RoE & EV/EBITDA Explained Simply

One of the most dangerous mistakes an IPO applicant can make is assuming that a ₹50 share is "cheap" and an ₹800 share is "expensive". Nominal share price tells you absolutely nothing about true company valuation. An IPO's price must always be evaluated relative to its corporate earnings, book equity, return ratios, and listed peers.

1. Price-to-Earnings (P/E) Multiple

The Price-to-Earnings (P/E) ratio is the most common valuation yardstick. It reveals how many rupees investors are paying for every ₹1 of net annual corporate profit.

  • Formula: P/E = Upper Issue Price ÷ Diluted Earnings Per Share (EPS)
  • Pre-Issue vs Post-Issue P/E: When a company creates new shares (Fresh Issue), the total share count increases. Always compute Post-Issue EPS (Net Profit ÷ Total Post-Issue Shares). A company appearing cheap at 25x pre-issue might actually be priced at a steep 38x post-dilution!
  • Peer Comparison: Compare the post-issue P/E directly with listed market peers in the same industry. If listed giants with decade-long track records trade at 30x P/E, a newly listing unproven competitor asking for 55x P/E is demanding an unjustified scarcity premium.

2. Return on Capital Employed (RoCE) & Return on Equity (RoE)

Valuation multiples are only justified if the underlying business generates high returns on the capital invested in it:

  • Return on Equity (RoE): Measures net profit generated per rupee of shareholder equity. A consistently high RoE (> 18–20%) indicates strong pricing power and disciplined management.
  • Return on Capital Employed (RoCE): Measures operating efficiency across both equity and long-term debt. A business with RoCE consistently above its borrowing cost (e.g. > 15–20%) is creating real economic shareholder value.

3. EV/EBITDA (Enterprise Value to Operating Profit)

For capital-intensive, manufacturing, infrastructure, or debt-heavy sectors, net profit can be distorted by high depreciation or interest expenses. Enterprise Value to EBITDA gives a cleaner picture of core operating cash flow regardless of capital structure.

4. Price-to-Book (P/B) Ratio

For banks, non-banking financial companies (NBFCs), and housing finance institutions, earnings can swing with provisioning cycles. Here, Price-to-Book (P/B) is the primary benchmark, comparing market capitalization against Net Asset Value (NAV).

Summary Checklist for IPO Valuation

  1. Calculate Post-Issue P/E using the upper price band.
  2. Compare against listed peers given in the "Basis for Issue Price" section of the RHP.
  3. Check if recent pre-IPO private funding rounds took place at a drastically lower price just months prior.
  4. Verify that profit growth over the past 3 years is driven by core revenue growth, not accounting adjustments.

Frequently asked questions

What is a good P/E ratio for an IPO?

There is no single "good" P/E. A 40x P/E may be attractive for a 35% compounder in high-tech or defense, while a 15x P/E could be overpriced for a stagnant cyclical commodity firm. Always benchmark against listed direct competitors.

Where do I find official peer valuation data in an IPO?

Open the Red Herring Prospectus (RHP) and jump to the statutory section titled <b>"Basis for Issue Price"</b>. SEBI mandates that the lead managers list direct industry peers, their P/E ratios, RoNW, and NAV per share.

Last updated 2026-10-25. Information only, not investment advice.