Beyond the 95/5 Rule: Why SaaS GTM Needs Precision Timing

The 95/5 Rule, popularised by Professor John Dawes at the Ehrenberg-Bass Institute, is one of the most influential ideas in B2B marketing. It made a simple but powerful point: only a small share of the market is actively buying at any given time. The rest are not in-market yet, which is why brand building matters.

This perspective gave marketing leaders the evidence to invest in awareness and reach. It set realistic expectations about why long-term memory creation is just as important as short-term lead capture. It remains a foundational contribution to B2B strategy.

But here’s the tension: SaaS doesn’t behave like packaged goods or banking. Trials, renewals, and churn create windows that open and close in weeks, not years.

👉 The challenge isn’t just who could buy. It’s when.

That’s why SaaS GTM needs a readiness spectrum alongside 95/5. Not to replace it, but to extend it with SaaS-specific evidence.

Respecting the Foundation   

The 95/5 Rule was never meant as a precise formula. Even John Dawes clarifies:

‍“The 95% figure is not meant to be a precise rule. We’re using it as a heuristic to get the idea across that the vast majority of businesses, for a large proportion of products, are not in the market in particular time periods.” (2021)

Seen this way, it’s a lens that rightly reframed B2B marketing. Instead of chasing every click, it urged teams to invest in brand and play the long game.

Our argument is not that 95/5 is wrong. It’s that SaaS introduces a layer of observable, recurring purchase events the original framing was never designed to capture.

The B2B SaaS Difference: Windows That Move Fast

SaaS subscription markets are more volatile than traditional categories. Buying readiness can shift suddenly, driven by events such as:

• A free trial starting overnight
• A renewal date creating urgency inside 30–90 days
• A churn freeing up budget unexpectedly
• A tech stack change that reshapes which vendors are in play

These episodic signals move accounts in and out of consideration much faster than long-cycle industries. A binary model struggles to explain that kind of movement.

👉 That’s what we call Signal Blindness: working hard but hitting at the wrong moment.

• Sales chasing the “perfect” account, only to find it just renewed
• Marketing nurturing audiences that won’t evaluate tools for months
• CS spotting churn only after the goodbye email

The cost isn’t lack of effort, it’s mistimed effort.

The Evidence: A Spectrum, Not a Binary  

To test this, we analysed 24M+ subscription events across 154 Customer Service & Livechat vendors between 2022–2025.

Instead of a neat 95/5 split, what we found was a distribution across intent tiers:

• High intent → renewal + multiple competitor trials
• Medium intent → renewal + one competitor trial
• Low intent → early signals, renewal without trials
• Not in market → stable, recently renewed

In other words, around 24.7% of accounts show observable buying signals at any given time but split across readiness tiers. To see how this readiness spectrum turns into practical GTM discipline, read our post on "Timing Intelligence 101".

👉 Buying isn’t binary. It’s a spectrum. And in SaaS, accounts move along it faster than most GTM teams assume.

This spectrum maps directly to a Qualified Opportunity framework. An account at High intent isn't automatically a Qualified Opportunity, it also needs to fit your ICP and represent a scenario you can realistically win. The Tri-Score approach evaluates all three simultaneously: ICP Fit, Purchase Intent (the spectrum tier), and Win Probability based on competitive context. This prevents high-intent accounts that aren't winnable from consuming disproportionate GTM resource.

Why This Matters for GTM   

If readiness is a spectrum, GTM execution has to reflect it. Three shifts stand out:

From binary to tiered routing

• High intent → fast, exec-level plays
• Medium intent → structured discovery and education
• Low intent → light nurture and POV content
• Not in market → long-term brand building

From ICP fit to urgency

An ideally profiled account provides no value if renewal occurred recently. Timing proves equally critical as profile match. And timing alone isn't enough either: a high-intent account outside your ICP, or in a competitive scenario you've historically lost, isn't a Qualified Opportunity. The most effective SaaS GTM teams evaluate three dimensions simultaneously: ICP Fit, Purchase Intent tier, and Win Probability. Only accounts that score well across all three deserve high-priority pursuit.

From funnel-only metrics to tier-based measurement

Tracking win rate, CAC, and cycle length by intent tier reveals which slices of the market deliver returns and where effort is wasted.

A Practical Rollout   

We’ve helped SaaS teams implement this with a 30-day rollout framework:

• Week 1, Signals: map accounts into intent tiers (High, Medium, Low, Not in Market).
• Week 2, Prioritise: align SLAs and resource allocation by tier.
• Weeks 3–4, Execute & refine: run tiered plays, measure by tier, and adjust.

It doesn’t require overhauling your GTM model. It’s about using the same resources more intelligently, with timing built in.

(The detailed framework and scoring logic are in the full whitepaper.)

 What Leaders Should Measure   

Metrics need to evolve alongside the model. Three starting points:

• Win rate by tier → are you closing the right accounts fast enough?
• CAC by tier → are you overspending on accounts that won’t convert soon?
• Cycle length by tier → are high-intent opportunities taking too long?

Looking through this lens makes misalignment visible and shows where reallocation can unlock faster revenue.

How This Relates to 95/5   

The useful question isn’t “is 95/5 wrong?” It’s “does 95/5 explain SaaS with enough precision to guide GTM?”

Our answer: not fully.

95/5 is a valuable heuristic that reshaped B2B strategy. But in SaaS, renewals, trials, and churn create recurring, evidence-based buying windows that make readiness more fluid.

That’s why we frame intent as a spectrum: not to reject 95/5, but to extend it with SaaS-specific data.

What GTM Leaders Can Do This Quarter   

To get started:

1. Audit → Do you know renewal dates for your top accounts? Can you detect competitor trials quickly?
2. Tag → Map accounts into tiers and align SLAs accordingly.
3. Measure → Track win rate, CAC, and cycle time by tier. Reallocate resources quarterly to the tiers delivering returns.

Where to Go From Here   

The 95/5 Rule gave marketers a vital lens for brand. But SaaS GTM cycles are faster, more volatile, and more transparent.

Our research shows readiness isn’t binary, it’s a spectrum. And adapting to that reality is what separates wasted effort from predictable revenue.

👉 We’ve unpacked the full dataset, ratios, and rollout framework in our new whitepaper:
Beyond the 95/5 Rule: A Readiness Spectrum for SaaS GTM

Because pipeline growth doesn’t come from chasing everyone. It comes from knowing who matters now and acting at the right time.

FAQs

What is the 95/5 Rule in B2B marketing?

The 95/5 Rule, developed by Professor John Dawes at the Ehrenberg-Bass Institute, states that only around 5% of B2B buyers are actively in-market at any given time. It's a useful heuristic for balancing brand investment against demand capture but in SaaS, buying windows move faster and more cyclically than the original model accounts for.

What percentage of SaaS accounts are in-market at any time?

Our analysis of 24M+ subscription events across 154 customer support and live chat vendors (2022–2025) shows that approximately 24.7% of accounts display observable buying signals at any given time distributed across high, medium, and low intent tiers. This is meaningfully higher than the 5% suggested by the traditional 95/5 heuristic, driven by SaaS-specific dynamics: free trials, renewal cycles, and churn.

What are intent tiers in SaaS GTM?

Intent tiers segment accounts by buying readiness: High intent (renewal cycle plus multiple competitor trials), Medium intent (renewal cycle plus single trial), Low intent (early indicators, renewal without trials), and Not in Market (recently renewed, stable state). Each tier calls for a different GTM response from rapid executive-level engagement at High, to long-term brand investment at Not in Market.

What is a Qualified Opportunity in B2B SaaS?

A Qualified Opportunity is an account that meets three criteria simultaneously: it fits your ICP (ICP Fit), it is actively in-market based on observable signals (Purchase Intent), and it represents a scenario you can realistically win (Win Probability). Intent tier alone is insufficient; an account can be High intent but outside your ICP or in a competitive scenario you historically lose. Qualified Opportunities combine all three.

How do I know which intent tier an account is in?

Intent tier classification requires real-time subscription signal data like a competitor trial starting, renewal windows opening, tool stack changes. MarketSizer tracks these signals across multiple categories, refreshed daily, to assign intent tiers to accounts in your target market automatically. Set up a demo to see it for yourself!

What to Read Next

"Timing Intelligence 101: How GTM Leaders Can Stop Missing Buying Signals and Start Acting in Real Time”