Glossary

Sales forecast

Definition

A sales forecast is an estimate of future revenue based on pipeline, historical performance, and market conditions. In other words, it is a structured view of what deals will likely close in a given time period (month, quarter, year).

Why sales forecasts matter in SaaS

  • Investor and board reporting: Accurate forecasts build credibility; missed forecasts damage trust.
  • Operational planning: Hiring, marketing spend, and product roadmaps often hinge on forecasted revenue.
  • Cash flow visibility: Forecasts inform burn management and runway planning.
  • Pipeline discipline: A forecast forces reps and managers to scrutinize which deals are real.

How sales forecasting works in SaaS

  • Subscription model: Forecasting isn’t just about one-off bookings; it must tie into ARR/ACV and renewal cycles.
  • Enterprise vs. SMB: Enterprise SaaS deals are lumpy and unpredictable, while SMB SaaS has higher volume and smoother forecast curves.
  • Expansion & renewals: A strong SaaS forecast accounts for upsells, cross-sells, and churn, not just net-new ARR.
  • Stage weightings: Many teams use stage-based probabilities (e.g., Proposal = 50%), but the best forecasts rely on historical conversion data, not default CRM numbers.

Methods commonly used to forecast sales

  • Stage-weighted pipeline: Each deal weighted by probability (see weighted pipeline).
  • Historical trend analysis: Uses past performance to model future quarters.
  • Commit vs. upside: Reps classify deals as “commit” (high confidence) or “upside” (stretch).
  • AI/ML forecasting: Modern SaaS companies use predictive tools that factor in activity data, deal velocity, and win rates.

Example of a SaaS sales forecast in practice

A SaaS company’s Q2 forecast:

  • Commit deals: $400k
  • Upside deals: $200k
  • Stage-weighted pipeline adds $350k expected

Final forecast: $750k ARR for Q2.

If the company actually books $720k, that’s a strong accuracy rate.

Common pitfalls when creating sales forecasts (and why they’re often inaccurate)

Sales forecasting sounds scientific, but in reality, it’s part data, part human psychology. Even the best-run SaaS companies struggle with accuracy because forecasts depend on behavior, assumptions, and changing conditions that aren’t fully predictable.

Why forecasts are often wrong:

  • Human bias: Reps overestimate confidence in late-stage deals, while managers may apply pressure to “make the numbers look better.”
  • Dynamic pipelines: SaaS deal cycles fluctuate based on seasonality, budgets, or procurement delays, factors outside the seller’s control.
  • Data quality issues: Incomplete CRM updates, inconsistent stage definitions, or missing renewal data distort accuracy.
  • External variables: Market shifts, customer churn, and budget freezes can all derail even strong pipelines.

Typical pitfalls to watch for:

  • Overreliance on gut feel: Forecasts driven by optimism rather than evidence.
  • Happy ears: Counting shaky “verbal commits” that rarely convert.
  • Ignoring churn and renewals: Focusing only on new ARR gives a false sense of growth.
  • No segmentation: Aggregating SMB and enterprise deals hides risk and volatility.

The best SaaS forecasts blend data discipline (historical conversion, deal velocity) with realistic judgement (confidence scoring, scenario modelling). Even then, the goal is forecast visibility and the ability to explain variance when it happens.

Forecast vs. target

  • Sales forecast: A prediction of what revenue will actually close in a given period, based on pipeline, probabilities, and rep input. It’s about reality.
  • Sales target: The revenue goal set by leadership (or the board) for a period. It’s about expectation.

A good sales org separates the two. Forecasts should be data-driven and honest, even if they fall short of target. Targets motivate performance; forecasts inform planning. Confusing them leads to sandbagging or over-promising.

AI prompt

What to provide the AI beforehand

  • Current pipeline (deal size, stage, close date)
  • Historical win rates by stage/segment
  • Renewal and expansion data
  • Deal velocity (average cycle length)
  • Segment mix (SMB, mid-market, enterprise)
  • Rep-reported commit vs. upside notes
Act as a revenue operations leader at a [seed-stage / Series A / growth-stage] SaaS company. Based on the following pipeline data [insert deals, stages, values, close dates], generate a sales forecast for [insert time period]. Include commit, upside, and stage-weighted views, and highlight risk factors that could cause variance.
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