P/E Ratio vs EV/EBITDA
P/E prices the equity against profit after interest and taxes; EV/EBITDA prices the whole business — debt included — against profit before them.
The difference
Both multiples divide a price by a profit figure, but they use different prices and different profits. P/E takes the share price and divides it by trailing twelve months of diluted earnings per share — earnings that sit after interest, taxes, depreciation and amortisation have been deducted, so the answer reflects how the company is financed and taxed. EV/EBITDA takes enterprise value — market capitalisation plus total debt, minus cash — and divides it by trailing twelve months of EBITDA, a profit figure measured before interest, taxes, depreciation and amortisation. Because debt sits in the numerator and interest is removed from the denominator, EV/EBITDA neutralises capital structure and tax, which is why it is the standard lens in mergers and acquisitions and when comparing capital-intensive or differently-leveraged firms. Neither is the "true" multiple: P/E answers what shareholders pay for reported profit, EV/EBITDA answers what the whole enterprise costs per dollar of earnings before interest, taxes, depreciation and amortisation.
Side by side
| Aspect | Price-to-Earnings (P/E) Ratio | EV / EBITDA |
|---|---|---|
| What it measures | Dollars paid per dollar of annual earnings, after interest and taxes | Whole-business value per dollar of EBITDA — profit before interest, taxes, depreciation and amortisation |
| Numerator | Share price (equity only) | Enterprise value: market cap plus total debt, minus cash |
| Denominator | Trailing twelve months diluted EPS | Trailing twelve months EBITDA |
| Capital structure | Reflects it — leverage and tax flow through earnings | Neutralises it — debt is added into the numerator while interest and tax are removed from the denominator, putting differently-financed firms on one footing |
| Main blind spot | Meaningless or negative when the company loses money | Excludes real costs like capital spending and interest |
| Typical use | Quick gauge versus peers and versus the company's own history | M&A work; capital-intensive or differently-leveraged firms |
Which one to use
Reach for Price-to-Earnings (P/E) Ratio when…
P/E is the better lens when you want the shareholder's-eye view: what the market pays for each dollar of profit that actually lands with owners after lenders and the tax authority are paid. It is the most common quick gauge of how cheap or expensive a stock looks relative to its profits and its peers, which makes it useful for like-for-like comparison within a sector and against a company's own history. It works best where earnings are positive and reasonably stable, and where leverage is not wildly different across the names being compared.
Reach for EV / EBITDA when…
EV/EBITDA is the better lens when financing differences would otherwise swamp the comparison — two firms in the same business, one loaded with debt and one debt-free, are not comparable on P/E but can be placed on the same footing on EV/EBITDA. That is why it is standard in mergers and acquisitions, where the buyer takes on the debt and the cash, and why it is used for capital-intensive or differently-leveraged firms. It is also the lens that survives when heavy depreciation pushes reported earnings toward or below zero while operations still generate profit.
The concrete mistake is reaching for EV/EBITDA the moment P/E stops looking flattering — or goes negative — and reading the lower-looking multiple as evidence of value. EBITDA excludes real costs like capital spending and interest, so it flatters exactly the heavily-indebted or asset-hungry businesses whose cash is consumed by those items; a business can look inexpensive on EV/EBITDA and still be losing money on a P/E basis, and both facts are true at once. The related error is comparing the two numbers directly, as if a P/E of 20 and an EV/EBITDA of 8 meant the same thing measured twice — they have different numerators and different denominators, and neither number is interpretable outside its own sector and its own peer set.
How Quintarthai uses them
Both multiples appear side by side on Quintarthai's company pages and can be used as screener filters in /app/, so you can see where a name's earnings-based and enterprise-based multiples agree and where they diverge. They are shown for education and comparison only — Quintarthai does not tell you what to buy, sell, or hold.