Definition
Maintenance CapEx is spending required to keep current operations running without expanding capacity.
Formula
Maintenance CapEx = total CapEx - growth CapEx (estimate)
Example
If total CapEx is $500k and $200k is for new growth projects, maintenance CapEx is $300k.
How to use it
- Separate maintenance from growth to avoid overstating free cash flow.
- Review asset lifecycles to estimate recurring replacement spend.
Common mistakes
- Treating all CapEx as growth and inflating cash flow quality.
- Ignoring rising maintenance needs as systems age.
Measured as
Maintenance CapEx = total CapEx - growth CapEx (estimate)
Misused when
- Treating all CapEx as growth and inflating cash flow quality.
- Ignoring rising maintenance needs as systems age.
Operator takeaway
- Separate maintenance from growth to avoid overstating free cash flow.
- Review asset lifecycles to estimate recurring replacement spend.
- Tie Maintenance CapEx 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 Investment decision metrics: NPV vs IRR vs payback vs PI if the decision depends on interpretation, policy, or trade-offs beyond the raw formula.
- Decide whether Maintenance CapEx belongs in cash planning, valuation, or debt monitoring so the number is used in the right model.
Where to use this on MetricKit
Guides
- Investment decision metrics: NPV vs IRR vs payback vs PI: A practical guide to investment decision metrics: when to use NPV, when IRR misleads, and how payback and profitability index fit in.