Formula Guide

Burn Multiple Formula: Exact SaaS Calculation Rules

This page defines the exact formula, the variables, the inclusion and exclusion rules, and the edge cases that must be handled if the metric is to be calculated correctly.

FRM

What This Formula Covers

Canonical formula

BurnMultiple = NetBurn / NetNewARR

Where, for monthly reporting:

NetNewARR = NetNewMRR × 12

Burn multiple measures how many dollars of net cash burn are required to create one dollar of net new ARR.

Variable definitions

  • NetBurn: cash outflows minus cash inflows over the period, excluding financing inflows unless policy says otherwise.
  • NetNewMRR: NewMRR + ExpansionMRR − ChurnedMRR − ContractionMRR.
  • NetNewARR: annualized net new recurring revenue from the same period.

ARR conversion rules

Burn multiple is only as strict as the ARR policy behind it:

  • Use normalized recurring revenue, not bookings or billings.
  • Use NetNewMRR × 12 only if the underlying MRR policy is already strict.
  • Do not substitute gross new ARR for net new ARR.

If losses are ignored in ARR creation, burn multiple will look artificially good.

Inclusion and exclusion rules

  • Exclude financing proceeds from operating cash efficiency unless the metric is explicitly redefined.
  • Exclude one-time non-recurring revenue from ARR creation.
  • Keep period alignment exact between burn and ARR creation.

Interpretation bands

  • Below 1: excellent capital efficiency.
  • 1 to 2: healthy for many growth-stage SaaS businesses.
  • 2 to 3: stressed efficiency.
  • Above 3: weak efficiency unless there is a deliberate strategic reason.

Edge cases

  • Negative NetNewARR: the ratio becomes economically ugly and should be labeled separately.
  • Near-zero NetNewARR: tiny denominators create unstable burn multiple values.
  • Seasonal cash timing: one-period burn can distort the picture without a trailing view.

Worked example

Suppose a company has NetBurn = 900,000 in a quarter and NetNewMRR = 50,000.

NetNewARR = 50,000 × 12 = 600,000
BurnMultiple = 900,000 / 600,000 = 1.5

A burn multiple of 1.5 means the company burns $1.50 of net cash to create $1 of net new ARR.

Strict summary

Burn multiple is a capital-efficiency ratio built on operating net burn and strict net new ARR. If gross ARR is used or losses are ignored, the result is not strict burn multiple.

MAP

Related Reading

Core metric pages: