Why use 5 or 10 years for DCF projections?

Why use 5 or 10 years for DCF projections?

• A. That's usually about as far as you can reasonably predict into the future. Less than 5 years would be too short to be useful, and over 10 years is too difficult to predict for most companies.
• B. It's required by company policy.
• C. It ensures accuracy of terminal value.
• D. It aligns with audit periods.

Answer: (A)

Forecast horizon in a DCF is about balancing how far you can reasonably predict cash flows with how much value you want to capture beyond that window. A horizon around five to ten years is long enough to model meaningful operating performance and capital needs, yet short enough that your assumptions stay credible. If you forecast only a few years, you miss substantial cash flows and undervalue the business; if you forecast beyond ten years, uncertainty explodes and the projections become unreliable, making the results depend heavily on assumptions that are hard to justify. The point is to ground the model in a credible, data-driven forecast and then capture the rest of the value with terminal value, rather than overrelying on an overly long, speculative forecast.

Forecast horizon in a DCF is about balancing how far you can reasonably predict cash flows with how much value you want to capture beyond that window. A horizon around five to ten years is long enough to model meaningful operating performance and capital needs, yet short enough that your assumptions stay credible. If you forecast only a few years, you miss substantial cash flows and undervalue the business; if you forecast beyond ten years, uncertainty explodes and the projections become unreliable, making the results depend heavily on assumptions that are hard to justify. The point is to ground the model in a credible, data-driven forecast and then capture the rest of the value with terminal value, rather than overrelying on an overly long, speculative forecast.