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Capital Expenditure Budget Calculator

Work out capital expenditure budget instantly with clear inputs, formula shown and shareable results.

About Capital Expenditure Budget Calculator

Separating maintenance from growth capex is the most useful split in a capital budget: maintenance capex is non-discretionary and roughly tracks depreciation, while growth capex is the discretionary portion that has to earn a return. Capex intensity against revenue is the standard comparability measure.

Formulas

Total budget

Total = (Maintenance + Growth) x (1 + Contingency %)

Capex intensity

Intensity % = Total capex / Revenue x 100

Worked example

With the default values below, Capital Expenditure Budget Calculator returns Total capital expenditure budget of $1,328,400.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Maintenance and replacement capex
450,000
Growth and expansion capex
780,000
Contingency allowance
8
Annual revenue
12,000,000

Results

Total capital expenditure budget
$1,328,400.00
Contingency allowance
$98,400.00
Capex as % of revenue
11.07%
Growth share of capex
63.41%

Step by step

  1. 1Values used
  2. 2Total budget
  3. 3Capex intensity
  4. 4Total capital expenditure budget= 1,328,400.00
  5. 5Contingency allowance= 98,400.00
  6. 6Capex as % of revenue= 11.07
  7. 7Growth share of capex= 63.41

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax or fees or charges into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How much contingency is normal?

5-10% for well-defined replacement programmes, 15-25% for first-of-a-kind projects with immature scope.

Should maintenance capex equal depreciation?

Over a long cycle they converge, but inflation and technology change mean replacement usually costs more than the historical cost being depreciated.

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