The terminal value problem: why SaaS valuations make investors nervous

There is a number that drives most conversations about what a tech company is worth — and most founders have never heard of it. It is called the terminal value. Understanding it explains a great deal about why buyers approach SaaS valuations with both enthusiasm and caution.

What is terminal value?

When a buyer values a company using a discounted cash flow model, they project free cash flows for five to ten years and discount those back to today. But a business does not stop at the end of that projection period. The terminal value captures everything beyond that horizon — all future cash flows, condensed into a single number at the end of the model.

Here is the uncomfortable reality: in most DCF models, terminal value represents 60 to 80 percent of total enterprise value. For high-growth SaaS companies — where profitability often comes later and growth is the primary value driver — that percentage is frequently higher. Which means the majority of what your company is worth today is determined by assumptions about a future nobody can fully predict.

Why small assumptions create large swings

The terminal value formula divides by the gap between the discount rate and the long-term growth rate. Change that growth rate assumption by just one percentage point — from 3% to 4% — and you can shift total company value by 15 to 25 percent. Same company, same last twelve months of revenue, entirely different outcome.

This is not a theoretical concern. In private M&A, it plays out directly in the gap between what a founder believes their company is worth and what a buyer is willing to pay. A buyer running conservative long-term assumptions might arrive at 4x ARR. A slightly more optimistic model justifies 7x or 8x. The difference is not the business — it is the terminal value inputs.

Three reasons SaaS is especially exposed

AI is compressing competitive moats. Buyers are now explicitly discounting terminal values for businesses that cannot demonstrate long-term defensibility. What once took years to build can be replicated faster. A product built around a workflow that AI can automate is a product with a shrinking moat — and terminal value models reflect that.

Growth rates have decelerated. Public SaaS multiples peaked at 18–19x ARR in 2021, then collapsed to around 5–6x by late 2025. That correction was not just about interest rates. It was a repricing of terminal value assumptions — a market acknowledgment that the perpetual high-growth story embedded in 2021 models was not credible. Private company valuations followed.

The exit horizon has lengthened. PE funds are holding assets longer. That means the terminal value — what a business will be worth in year six, seven, or eight — carries more weight in investment committee discussions than it did five years ago. Buyers are more cautious about the assumptions that drive it.

What reduces terminal value uncertainty — and improves your exit

Buyers are not abandoning DCF models. They are placing a significant premium on businesses that make the terminal value argument easier to defend. In practice, that means four things:

Vertical depth over horizontal breadth. A focused, vertical SaaS company has a more predictable competitive position than a horizontal tool competing across every category. Depth makes long-term growth assumptions more credible.

High switching costs. Deep product integrations, proprietary data, and embedded workflows all increase the terminal value by making churn structurally lower over time. Buyers model this as durable NRR — which flows directly into terminal cash flow assumptions.

A credible AI position. Not AI as a feature, but AI as a strategic direction. Where is your product heading? What data assets do you have? How does AI deepen your defensibility rather than threaten it? Investors who cannot answer these questions about your business will apply a discount.

Management independence. A business that requires the founder to function has a terminal value that depends on the founder staying. A business with a capable team that operates independently has a terminal value that belongs to the company.

If you are thinking about an exit in the next two to three years, the time to build that argument is now. The structural drivers of terminal value take time to develop. Start early — ideally before any buyer is in the room.