EPM 101: FP&A Essentials

Driver-Based Planning

The foundation of modern FP&A. A practical guide to building faster, more accurate, more collaborative plans using the levers that actually move the business.

Overview

What Is Driver-Based Planning?

Driver-based planning links your financial outputs (revenue, expenses, headcount, cash, margins) to the operational inputs that actually cause them:

  • units sold
  • pipeline conversion
  • price
  • churn
  • staffing ratio
  • productivity
  • volume
  • contracts
  • seasonality

Instead of hardcoding numbers, you're building mathematical relationships that scale, update automatically, and stay accurate.

Drivers turn FP&A from manual number-changing into automated insight generation.

The Three Types of Drivers

Every business uses a mix of:

1. Volume Drivers

  • Units sold
  • Bookings
  • Pipeline
  • Customers
  • Transactions
  • Subscriptions
  • Usage metrics

Volume determines activity.

2. Rate/Price Drivers

  • Price per unit
  • Discount rate
  • Churn rate
  • Renewal rate
  • Salary rate
  • Bonus target
  • Commission %
  • Billing rate

Rates determine value.

3. Efficiency/Productivity Drivers

  • Ramp time
  • Sales capacity
  • Ops productivity
  • Marketing efficiency
  • Support ratios
  • Headcount-to-output ratios

Efficiency determines profitability.

Why It Matters

Modern companies change fast. Markets change fast. Pipeline changes fast. Hiring changes fast.

Driver-based planning lets FP&A:

Forecast Faster

No more rebuilding full models — change a few drivers and everything updates.

Embed Business Logic

Finance becomes a partner, not a spreadsheet operator.

Improve Accuracy

If assumptions change, the model changes automatically.

Model Scenarios

"What if revenue drops 10%?" → change 1 driver. "What if hiring slows?" → change 1 driver.

Scale the Planning Process

Works for 2 entities or 200. Works for 10 accounts or 1,000.

Driver-based planning is the backbone of continuous planning.

Driver-Based Planning Examples

By Function

Revenue Planning

  • Pipeline × Conversion Rate × Average Deal Size
  • Active customers × Price × Renewal rate
  • Units × Price × Mix

COGS Planning

  • Units × Unit Cost
  • Staff hours × Billable rate
  • Vendor contracts × tiered pricing

OPEX Planning

Marketing:

Spend → Leads → Pipeline → Revenue

Sales:

Headcount × Productivity × Ramp time

Product/Engineering:

Team size × salary + overhead

G&A:

Staffing ratio × growth assumption

Headcount Planning

  • Start HC + New Hires − Attrition
  • Compensation = HC × Salary Rate × Bonus
  • Benefits % × Payroll

Cash Planning

  • Collections driver: AR days × revenue
  • Payment terms × AP
  • CapEx schedules

SaaS Planning

  • Customer count × ARPU × churn
  • Expansion rate × gross retention
  • Support tickets × staffing ratio

How to Build a Driver-Based Model (Step-by-Step)

  1. Step 1 — Identify the key levers of the business
    2–5 per function. Not 50.
    Examples: Pipeline → conversion → bookings | Headcount → productivity | Units → price | Customers → churn
  2. Step 2 — Map the relationships
    Turn business logic into formulas.
    Example: Bookings = Pipeline × Conversion Rate × Average Deal Size
  3. Step 3 — Build a central driver sheet
    A single tab/page where FP&A updates: growth assumptions, pricing, hiring rates, volume, productivity.
    Modern tools call this the "drivers module."
  4. Step 4 — Connect drivers to financial statements
    Revenue → COGS → OPEX → Cash flow.
    Your model becomes: scalable, auditable, predictable
  5. Step 5 — Align with business partners
    Validate assumptions with: Sales, Marketing, Operations, HR, Product.
    Business partnering strengthens the model.
  6. Step 6 — Automate it inside a planning tool
    Driver-based planning is where tools like Pigment shine.

How It Fits Into Modern FP&A

Why Driver-Based Planning Fails (Common Pitfalls)

Most mid-market companies struggle here because:

  • Too many drivers
  • The wrong drivers
  • No ownership
  • Stale assumptions
  • Hardcoded numbers
  • No linkage to financials
  • Tools not designed for driver logic

Too many drivers: The model collapses under the weight of complexity.

The wrong drivers: They pick metrics that don't actually move results.

No ownership: Sales assumes FP&A owns the drivers. FP&A assumes Sales owns the drivers.

Stale assumptions: Drivers updated once a year are useless.

Hardcoded numbers: Excel ruins everything with one hidden value.

No linkage to financials: Drivers float in isolation → no impact analysis.

Tools not designed for driver logic: Legacy tools choke on advanced driver modeling.

How Modern FP&A Tools Support Driver-Based Planning

Pigment

Real-time drivers, interconnected models, instant recalculation.

Planful

Structured templates, solid mid-market driver automation.

Adaptive Planning

Strong built-in modeling, but more rigid.

Vena

Excel-first → easier for traditional teams.

Mosaic / Firmbase / Abacum

Pre-built SaaS drivers, fast deployment.

When Driver-Based Planning Matters Most

  • High-growth companies
  • SaaS + subscription models
  • Manufacturing
  • Multi-entity orgs
  • Companies with more than 300 employees
  • Complex revenue models
  • Rapid headcount scaling
  • Volatile pipeline environments

What "Good" Driver-Based Planning Looks Like

A world-class driver model:

  • Has fewer than 30 total drivers
  • Updates automatically
  • Feeds all financial statements
  • Drives scenario planning
  • Is owned by FP&A AND the business
  • Is tool-supported
  • Drives fast, monthly forecasting
  • Helps executives make decisions quickly

Need help building a driver-based model or selecting the right planning tool?

I offer a free, vendor-neutral 20-minute advisory call to point you in the right direction.

Book a 20-min Consultation

Independent FP&A & EPM advisory for mid-market finance teams.

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