Financial Planning
Burn Multiple: Compare Efficiency on a Matched Basis
Calculate net cash burn per dollar of net new ARR, keep periods matched and handle zero or shrinking ARR without misleading ratios.
What you will learn
- match a burn period to its ARR change
- calculate and reconcile a burn multiple
- explain why zero or negative growth needs a different presentation
Burn multiple is net cash burn divided by net new ARR over the same period. It asks how much cash the business used for each dollar added to its annual recurring-revenue run rate. Calculate the two inputs first, show your definitions and keep unusual cash movements visible. A ratio is a diagnostic, not a complete operating decision.
Fix the period and definition
David Sacks describes the burn-multiple formulation. For a quarter, use that quarter’s net cash burn and the difference between ARR at its start and end. The denominator is an annualized run-rate change observed during the quarter; do not divide it by four merely because the numerator covers three months.
Define net burn from your reviewed cash records. Exclude financing receipts from operating customer receipts and disclose how investing items, debt service and exceptional cash movements are handled. A change in bank cash after a funding round is not automatically operating burn.
Reconcile a fictional quarter
Fictional inputs: operating cash payments are $450,000 and customer cash collections are $210,000. Under this exercise’s stated net-burn policy, no other cash movements are included. Starting ARR is $600,000 and ending ARR is $760,000.
| Input | Calculation | Result |
|---|---|---|
| Net cash burn | $450,000 minus $210,000 | $240,000 |
| Net new ARR | $760,000 minus $600,000 | $160,000 |
| Burn multiple | $240,000 divided by $160,000 | 1.5x |
The company used $1.50 of cash for each $1 added to its annualized recurring base. That statement describes the period, not a guaranteed future return or evidence that every dollar of spending caused the growth.
Check the denominator before interpreting the result
| Situation | What to report | Why |
|---|---|---|
| Net new ARR is zero | Show burn and zero ARR change; ratio unavailable | Division by zero is undefined, not zero efficiency |
| ARR shrank | Show burn and negative ARR change separately | A negative ratio can look better while the business contracts |
| Net cash generation | Show cash generation and growth explicitly | A negative numerator is not the same as poor efficiency |
| Tiny ARR change | Show the inputs and sensitivity | A small denominator makes the ratio volatile |
Do not substitute gross new sales for net new ARR when churn is present. Do not put total revenue in the denominator and keep the same label.
Use the ratio to ask a narrower question
Split the diagnostic into cost, collections and recurring-base movement. Did spending rise before capacity was used? Did annual prepayments move cash without changing service economics? Did churn offset new subscriptions? A useful review identifies a source-backed question, not a reflex instruction to cancel a project.
Show several comparable periods and explain policy changes. Use the runway lesson for how long cash may last. A low burn multiple does not tell you when a specific invoice or payroll obligation falls due.
Copy the matched-period worksheet
Period and cutoffs:
Net-burn policy and source records:
Customer cash collected:
Included cash payments:
Excluded financing/investing/exceptional items, disclosed:
Net cash burn:
Starting ARR and definition:
Ending ARR on the same policy:
Net new ARR:
Ratio, or reason it is not meaningful:
Largest movement and supporting evidence:
Question, accountable owner and next review:Exercise: do not mistake gross additions for net growth
A fictional quarter burns $180,000 cash. New and expansion ARR add $150,000, but contraction and churn remove $50,000. What is the burn multiple?
Answer: net new ARR is $100,000, so burn multiple is 1.8x. Dividing by the $150,000 gross addition would report 1.2x and hide the losses. If a later quarter has no net new ARR, leave the ratio unavailable and show the underlying inputs.
Prepare a reviewable efficiency brief
The finished artifact includes matched dates, reconciled cash, a consistent recurring-revenue policy and one explanation of the biggest movement. No universal “good” threshold is needed to make the diagnostic useful.
Keep that brief with your fundraising materials in Finta. Ask Aurora to help turn the approved inputs into questions for the next operating or investor review. Verify arithmetic in the source workbook and assign evidence requests to the right people before changing spending or communicating a conclusion.
Finta Field Guide. By Finta Editorial Team. Sources checked November 14, 2026. Examples are original, fictional teaching exercises, not customer results, benchmarks or individualized financial, accounting, legal or tax advice.