Definition
Capital efficiency reflects how much output (revenue or ARR) you produce per dollar of capital invested or burned.
Formula
Capital efficiency = output metric / capital invested
Example
If $5M of capital produces $3M ARR, capital efficiency is 0.6x.
How to use it
- Define the output metric clearly (ARR, gross profit, or revenue).
- Use consistent time windows when comparing efficiency.
Common mistakes
- Mixing equity raised with debt financing without context.
- Comparing efficiency across stages without normalization.
Measured as
Capital efficiency = output metric / capital invested
Misused when
- Mixing equity raised with debt financing without context.
- Comparing efficiency across stages without normalization.
Operator takeaway
- Define the output metric clearly (ARR, gross profit, or revenue).
- Use consistent time windows when comparing efficiency.
- Tie Capital Efficiency to the same balance-sheet date, scenario, and decision memo you are using elsewhere in the model.
- Document which claims, costs, or adjustments your team includes before comparing numbers across forecasts, covenants, or valuation work.
Next decision
- Read Unit economics hub: CAC, LTV, payback, and runway (a practical stack) if the decision depends on interpretation, policy, or trade-offs beyond the raw formula.
- Decide whether Capital Efficiency belongs in cash planning, valuation, or debt monitoring so the number is used in the right model.
Where to use this on MetricKit
Guides
- Unit economics hub: CAC, LTV, payback, and runway (a practical stack): A practical hub for unit economics: CAC, fully-loaded CAC, LTV, payback, margin impacts, burn multiple, and runway planning.
- Fundraising & valuation hub: pre/post-money, SAFEs, notes, and liquidation prefs: A practical hub for startup fundraising and valuation basics: pre/post-money, pro rata, option pool shuffle, SAFE/note conversion, and liquidation preference outcomes.