📈 EPS Growth Calculator

EPS growth is the market's favorite story, but not all growth is created equal. Earnings can rise because the business improved, or simply because buybacks shrank the share count. This calculator measures both the total growth and the annualized CAGR, then prompts the quality question every investor should ask.

How to Use This Calculator

The Formula

CAGR smooths multi-year growth into a yearly rate for fair comparisons. Compute the base figures with our EPS calculator first if you only have financial statements.

Worked Example

EPS rises from $2.00 to $2.50 over three years. Total growth = ($2.50 − $2.00) / $2.00 = 25.0 percent. CAGR = (2.50/2.00)^1/3 − 1 ≈ 7.72 percent per year. Now the quality check: if shares outstanding fell 20 percent over the same period while net income was flat, nearly all the "growth" is buyback engineering, and the business itself did not grow at all.

Tips for Interpretation

Decompose growth into its sources: revenue growth, margin change, and share-count change multiply together into EPS growth. Five years of 10 percent CAGR from revenue and margins deserves a premium multiple; the same CAGR from buybacks deserves scrutiny of the price paid. Adjust for one-offs at both endpoints, since a depressed base year flatters the rate. And compare CAGR to the cost of equity: growth below it destroys value no matter how positive it looks.

Common Mistakes

Mixing basic and diluted EPS between periods corrupts the comparison; pick one and hold it. Computing growth off a negative base year produces nonsense percentages, so use absolute values or skip to CAGR with care. Annualizing a single quarter's jump into a "growth rate" confuses volatility with trend. The most expensive mistake is paying a growth multiple for buyback-driven EPS while the underlying business stagnates.

The PEG Ratio Connection

The PEG ratio divides P/E by the EPS growth rate, testing whether growth justifies the multiple: a P/E of 20 with 25 percent growth gives a PEG of 0.8, traditionally cheap, while the same P/E with 5 percent growth gives 4.0, expensive. PEG inherits every flaw of its inputs, so feed it quality-checked, sustainable growth, not a single engineered year. Growth is only worth paying for when it compounds.

Dividends complicate the growth picture in a useful way: total shareholder return is price growth plus dividend yield, so a 5 percent EPS grower with a 4 percent yield matches a 9 percent grower that pays nothing. When comparing growers to dividend payers, always use total return. EPS growth alone flatters the non-payers; the shareholder wallet counts both.

Finally, sanity-check growth against reinvestment: divide the EPS increase by the retained earnings that funded it. A company retaining $5 per share to grow EPS by $0.50 earned a 10 percent marginal return, decent; one retaining $5 to grow $0.10 earned 2 percent, destroying value. Growth funded at poor returns is just expensive motion.

The Sustainable Growth Rate

Fundamental analysis caps believable EPS growth with the sustainable growth rate: ROE × retention ratio. A company earning 15 percent on equity and retaining 60 percent of earnings can fund about 9 percent annual growth without new capital. Growth forecasts above this ceiling require either rising ROE, external financing, or magic; identify which before believing the projection.

This disciplines both sides. Management guiding 20 percent growth at 10 percent ROE with a 50 percent payout is promising 5 percent fundamentals dressed as 20 percent hope. Investors demanding 15 percent growth from a mature 8-percent-ROE utility are demanding dilution or heavier borrowing, not performance.

Use it as a reasonableness filter on every growth story, including your own scenario inputs to this calculator. Sustainable growth is the speed limit; anything faster needs a stated source of fuel.

Growth vs Value Trap

High historical EPS growth seduces buyers into paying growth multiples for growth that already happened. The value trap version: a "cheap" 8x P/E on declining earnings, where the E is evaporating. Both errors come from extrapolating the recent past, one optimistically and one hopefully.

The PEG ratio helps but does not save: a PEG of 0.8 on unsustainable 25 percent growth is expensive, while a PEG of 2.0 on durable 10 percent compounding can be fair. Durability of growth beats its speed. Ask what moat protects the growth, how long the runway is, and what could compress it; the answers matter more than the CAGR.

Base rates humble everyone: very few companies sustain 15 percent EPS growth for a decade, and mean reversion is the strongest force in business statistics. Pay for proven durability at fair prices rather than for exciting trajectories at any price. The growth investor's edge is not spotting growth but judging its lifespan.

Estimates for planning only, not financial advice.