Discounted Cash Flow (DCF) Calculator
A professional tool to learn how to calculate discounted cash flow, mirroring the process used in Excel for business valuation and investment analysis.
The most recent, full-year free cash flow to the firm (FCFF). Unit: Currency ($).
The annual growth rate (%) for the initial projection period.
The number of years you expect the high-growth rate to last (e.g., 5 or 10).
The Weighted Average Cost of Capital (%). Must be higher than the terminal rate.
The perpetual growth rate (%) after the high-growth period (e.g., long-term inflation rate).
Results Breakdown
What is Discounted Cash Flow (DCF)?
Discounted Cash Flow (DCF) is a valuation method used to estimate the value of an investment based on its expected future cash flows. The core idea is that the value of any asset is the sum of all its future cash flows, each adjusted for the time value of money. In essence, a dollar today is worth more than a dollar tomorrow. This method is fundamental in corporate finance and is a cornerstone of learning how to calculate discounted cash flow using Excel, as spreadsheets are the primary tool for building these models.
Anyone from individual investors, financial analysts, to business owners can use DCF to determine a company’s intrinsic value. By comparing this intrinsic value to the current market price, one can decide if a stock is overvalued, undervalued, or fairly priced. A common misunderstanding is that DCF provides a precise, absolute value. In reality, it’s a highly sensitive estimate that depends heavily on assumptions like growth rates and the discount rate. Small changes to these inputs, which our calculator helps you test, can significantly alter the valuation.
The Discounted Cash Flow Formula and Explanation
The DCF formula might look complex, but it’s a logical two-stage process. This is the same logic you would build when figuring out how to calculate discounted cash flow using Excel.
- Forecast Period: Calculate the present value (PV) of cash flows for a specific high-growth period.
- Terminal Value: Estimate the value of the business beyond the forecast period and discount it back to the present.
The general formula is:
DCF = Σ [CFₙ / (1+r)ⁿ] + [TV / (1+r)ʸ]
Where CFₙ is the cash flow for year n, r is the discount rate, n is the year, TV is the Terminal Value, and y is the final year of the projection period. The Terminal Value itself is calculated using the Gordon Growth Model: TV = (CFᵧ * (1+g)) / (r-g), where g is the perpetual terminal growth rate. For deeper insights into valuation, many professionals compare DCF with other business valuation methods.
Variables Table
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Free Cash Flow (FCF) | Cash generated by the company after accounting for cash outflows to support operations and maintain capital assets. | Currency ($) | Varies greatly by company size. |
| Discount Rate (r) | The rate used to discount future cash flows back to their present value. Often the WACC. Our WACC calculator can help you determine this. | Percentage (%) | 5% – 15% |
| Growth Rate (g) | The rate at which the company’s free cash flows are expected to grow during the forecast period. | Percentage (%) | -5% – 25% |
| Terminal Growth Rate (g_term) | The rate at which the company’s free cash flows are expected to grow forever after the forecast period. | Percentage (%) | 0% – 3% |
Practical Examples
Understanding how to calculate discounted cash flow using Excel or a calculator is best done with examples.
Example 1: Stable Manufacturing Company
Let’s analyze a mature company with predictable cash flows.
- Inputs:
- Initial Free Cash Flow: $5,000,000
- High-Growth Rate: 4%
- High-Growth Period: 5 years
- Discount Rate (WACC): 7%
- Terminal Growth Rate: 2%
- Results: This scenario would result in a DCF valuation of approximately $81.2 million. The stable, moderate growth contributes to a solid valuation, which an investor might compare to its current market capitalization.
Example 2: High-Growth Tech Startup
Now, let’s value a younger tech company with higher risk and higher growth potential.
- Inputs:
- Initial Free Cash Flow: $1,000,000
- High-Growth Rate: 25%
- High-Growth Period: 10 years
- Discount Rate (WACC): 12% (higher due to risk)
- Terminal Growth Rate: 3%
- Results: This model would yield a DCF valuation of about $21.7 million. Here, a large portion of the value comes from the terminal value calculation, as the high growth is expected to level off eventually. The higher discount rate reflects the uncertainty of achieving that growth.
How to Use This Discounted Cash Flow Calculator
This tool simplifies the process you’d follow when learning how to calculate discounted cash flow using Excel. Follow these steps for an accurate valuation:
- Enter Initial FCF: Input the most recent annual Free Cash Flow to the Firm (FCFF).
- Set Growth Projections: Define the expected annual growth rate for the initial forecast period and the number of years this growth will last.
- Determine the Discount Rate: Enter the Weighted Average Cost of Capital (WACC). This rate reflects the company’s risk profile. It must be higher than your terminal growth rate.
- Set the Terminal Rate: Input a perpetual growth rate for cash flows beyond the forecast period. This should be a conservative, long-term rate, typically around the expected rate of inflation.
- Analyze the Results: The calculator instantly provides the total DCF valuation (the company’s intrinsic value). It also shows intermediate values like the sum of discounted cash flows and the discounted terminal value, which are crucial for analysis. The table and chart visualize how the value accumulates over time.
Key Factors That Affect Discounted Cash Flow
The DCF valuation is sensitive to several key inputs. Understanding them is vital for anyone working on financial modeling. For those interested in the details, exploring the differences between NPV vs IRR provides excellent related context.
- Discount Rate (WACC)
- Perhaps the most influential input. A higher discount rate implies more risk and a lower present value for future cash flows, thus lowering the DCF valuation.
- Terminal Growth Rate
- Because this rate applies to cash flows into perpetuity, a small change here can have a massive impact on the terminal value, which often constitutes a large portion of the total DCF value.
- Initial Cash Flow
- The foundation of the entire model. An inaccurate or non-representative starting FCF will make the entire projection incorrect.
- Growth Rate and Period
- The assumptions about how fast and for how long a company can grow are critical. Overly optimistic growth assumptions are a common pitfall in DCF analysis.
- Capital Expenditures (CapEx)
- This is a key component of the free cash flow formula. Higher required CapEx reduces FCF and, therefore, the DCF valuation.
- Macroeconomic Factors
- Interest rates, inflation, and overall economic health can influence both the discount rate and growth assumptions, indirectly affecting the valuation.
Frequently Asked Questions (FAQ)
1. What is a good discount rate to use?
A good discount rate is typically the company’s Weighted Average Cost of Capital (WACC), which reflects its blended cost of debt and equity. It can range from 5-7% for stable, mature companies to over 15% for risky startups.
2. Why does the discount rate have to be higher than the terminal growth rate?
In the terminal value formula `(CF * (1+g)) / (r-g)`, if the growth rate (g) were higher than the discount rate (r), the denominator would be negative, implying an infinite negative value, which is nonsensical. If they were equal, you’d be dividing by zero.
3. How is this different from doing a DCF in Excel?
This calculator automates the exact steps you would take. Manually figuring out how to calculate discounted cash flow using Excel involves setting up rows for each year, writing formulas for FCF projection, discounting, and summing them up using functions like NPV. This tool does that instantly.
4. What is Terminal Value?
Terminal Value represents the value of all free cash flows from a company for all years beyond the explicit forecast period. It assumes the company will continue to grow at a stable, constant rate forever.
5. Is DCF reliable?
DCF is a powerful tool but its reliability is entirely dependent on the quality of its inputs. It’s often said the valuation is “garbage in, garbage out.” It’s best used as one of several valuation methods.
6. Can DCF be used for unprofitable companies?
Yes, but it’s more difficult. You must project when the company will become profitable and start generating positive free cash flow. The valuation becomes highly sensitive to these future assumptions.
7. What is the difference between Free Cash Flow to Firm (FCFF) and Free Cash Flow to Equity (FCFE)?
This calculator uses FCFF, which is the cash flow available to all capital providers (debt and equity). The corresponding discount rate is WACC. FCFE is the cash flow available only to equity holders, and it’s discounted at the cost of equity.
8. How many years should I use for the projection period?
A typical projection period is 5 or 10 years. The period should be long enough to allow the company to reach a stable-growth phase, after which the terminal value can be applied.