TL;DR: An intrinsic value calculator is a discounted cash flow engine with a friendlier name. Give it free cash flow per share, a growth rate, a discount rate, and a terminal growth rate, and it returns the per share value those assumptions imply. In the worked example below, free cash flow per share of $4.00 growing at 6 percent for five years, discounted at 10 percent with 2.5 percent terminal growth, produces an intrinsic value of $63.35 per share, and about 72 percent of that value comes from the terminal value alone. The calculator is honest arithmetic wrapped around your guesses.
Key Takeaways
- The intrinsic value calculator in this guide is a DCF machine: it discounts forecast cash flows to today. Other calculators sold under the intrinsic name use different machinery, such as dividend discount or asset based models. See the DCF calculator guide for the input by input tour.
- Most of the output usually comes from the terminal value, the part of the model built on the longest range assumption.
- The discount rate is your required return. Small changes to it move the answer more than most research refinements do.
- Run the calculation across a small grid of sensible inputs and treat the answer as a range, then compare the price with that range using a margin of safety.
- A calculator cannot tell you whether the starting cash flow figure is normal. That judgment is the research, covered in how to calculate the intrinsic value of a stock.
What is inside an intrinsic value calculator?
Four blocks. First, a starting cash flow: usually free cash flow per share, sometimes earnings per share in simpler versions, which is a weaker input because earnings include non cash items and ignore capital spending. Second, a forecast: the cash flow grown at your rate for a set window, commonly five or ten years. Third, a terminal value: everything after the window, compressed into one figure using a perpetual growth formula. Fourth, discounting: every future figure divided down by your discount rate to express it in today's money, then summed.
Versions differ in decoration, not in structure. Some ask for net debt and share count and value the whole company first. Some work per share throughout. Some add a fade, where growth declines gradually toward the terminal rate instead of dropping in one step. Each refinement changes the answer modestly. The discount rate and the starting cash flow change it fundamentally, which is why two investors can use the same calculator on the same stock and honestly reach answers 40 percent apart.
A worked example, step by step
Use a hypothetical company with free cash flow per share of $4.00 last year. Assume growth of 6 percent a year for five years, a discount rate of 10 percent, and terminal growth of 2.5 percent after year five.
The forecast cash flows per share are: year 1, $4.24; year 2, $4.49; year 3, $4.76; year 4, $5.05; year 5, $5.35. Discounted at 10 percent, those five years are worth $17.92 per share today. The terminal value at the end of year 5 is year 5 cash flow grown once at the terminal rate, divided by the discount rate minus the terminal rate: $5.35 times 1.025, divided by 0.075, equals $73.16. Discounted back five years, that terminal value is worth $45.42 today. Add the two parts at full precision (the rounded components shown sum to $63.34): an intrinsic value of $63.35 per share.
Now the lesson the example is really teaching. The terminal value supplies $45.42 of the $63.35, about 72 percent. The years you forecast explicitly, the part that feels like research, supply barely a quarter of the answer. The rest is a formula about forever, driven by the gap between your discount rate and your terminal growth rate. When that gap is small, the answer explodes, which is the model warning you that the assumptions, not the company, are producing the value.
How do you keep a calculator honest?
Change one input at a time and watch the output. Raise the discount rate from 10 percent to 11 percent and note how far the value falls. Set growth to zero and see what the business is worth standing still. These sensitivity runs convert a single impressive number into a map of what you are actually assuming. Then invert the problem with a reverse DCF: instead of asking what your assumptions produce, ask what growth rate today's price already assumes, and judge whether that rate is believable for this business.
Finally, anchor the starting figure. Last year's free cash flow can be flattered by a working capital swing or depressed by a one time build. A normalized figure, averaged or adjusted across several years from the cash flow statement, is the input the calculator deserves. The guide to free cash flow covers how that figure is built and where it hides.
FAQ
Is intrinsic value a fact about a stock? No. It is the output of a model fed with your assumptions. Two careful investors can compute different intrinsic values for the same company on the same day, and both can be doing the arithmetic correctly.
What discount rate should I use? The return you require for taking this risk. Many investors use a figure in the high single digits to low teens for established companies, higher for riskier ones. The honest test is consistency: use the same required return standard across companies so your comparisons mean something.
Why do calculators disagree with each other? They hide different defaults: forecast length, terminal formula, whether cash flow is levered or unlevered, and how debt and shares are bridged. Two calculators given identical visible inputs can still differ if their hidden defaults differ. Prefer calculators that show every input.
Can a calculator value a young, unprofitable company? Only by forecasting cash flow that does not yet exist, which makes the output almost pure assumption. The tool works. The inputs are speculation, and the answer should be labeled that way in your notes.
A quicker ceiling built from earnings and book value is worked by hand in the Graham number calculator.
Sources
- Benjamin Graham and subsequent textbook treatments of discounted cash flow valuation, for the model structure described.
- Investor.gov (U.S. Securities and Exchange Commission), investor education material on financial statements and valuation, accessed October 2026.
- Every worked example in this post was computed directly from the stated inputs shown in the text.
Educational content, not financial advice. Any worked example uses hypothetical, illustrative figures chosen for round numbers. It is not a projection of any security's returns and not a recommendation to buy or sell any security.
