Industrial CAPEX Planning
A capital plan is a claim about the future that has to survive scrutiny. Its credibility rests on three things: an estimate whose class matches the engineering behind it, contingency derived from identified risk rather than a round percentage, and a phasing plan that lets the organisation stop between tranches.
Estimate classes and what they mean
Never present an estimate without its class and the engineering basis behind it. Approving a concept number as a budget is the origin of most industrial cost overruns.
- Class 5 (concept): ±30–50%, capacity-factored
- Class 4 (pre-feasibility): ±25–30%, equipment-factored
- Class 3 (feasibility): ±15%, defined equipment list and layout
- Class 2 (control): ±10%, detailed engineering substantially complete
What belongs in the number
Industrial CAPEX extends well beyond equipment. Omissions, not overruns, cause most funding gaps.
- Equipment, freight, duties and installation
- Building, civil works and utility connections
- Automation, integration, instrumentation and IT
- Engineering, project management and owner's costs
- Permits, insurance, commissioning, spares and training
- Working capital for the ramp-up period
- Contingency and escalation
Contingency that means something
Derive contingency from the risk register — quantify each identified risk by probability and impact — rather than applying a flat percentage. A 10% contingency on a novel process is optimism; 20% on a repeat build is waste.
Phasing and decision gates
Structure the programme so that capital is released in tranches at defined gates. Optionality has real value: the ability to stop after utilities and civil works is worth more than a marginal saving from committing everything at once.
The approval package
Boards approve evidence, not enthusiasm: the strategic case, options considered and rejected, estimate with class, risk register, financial returns with sensitivities, financing plan and governance arrangement.
Buyer checklist
Use this as a readiness test before committing capital or issuing an RFQ.
- 01Estimate class stated and matched to engineering completed
- 02Cost built bottom-up from a defined scope
- 03All non-equipment cost categories included
- 04Working capital for ramp-up included
- 05Contingency derived from a quantified risk register
- 06Escalation applied for long delivery periods
- 07Spend phased into tranches with decision gates
- 08Cash-flow profile modelled monthly
- 09Sensitivities on CAPEX, price, volume and FX
- 10Governance and change control defined before approval
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CAPEX ROI & payback calculator
Model total installed cost, ramp-up, NPV, IRR and simple or discounted payback for a factory expansion, new line or equipment replacement — before you talk to any supplier.
Open the calculatorCommon mistakes
- 01Single-number approvals
Boards should approve a range with a class and a contingency basis.
- 02Flat-percentage contingency
Unrelated to actual project risk in either direction.
- 03Excluding owner's costs
Engineering, project management and commissioning are real, large and frequently omitted.
Frequently asked questions
What contingency should an industrial project carry?+
Derive it from a quantified risk register. As a reference, 10–15% is typical for a repeat build with a Class 3 estimate, and 20–30% for novel processes or early-stage estimates.
What is a Class 3 estimate?+
A feasibility-grade estimate of roughly ±15% accuracy, built from a defined equipment list, layout, utility schedule and construction methodology.
Where this fits in your project
Global B2B Group accepts no paid placement and is free for buyers. We help owners, investors and government organisations prepare industrial investments, qualify suppliers and structure project financing — with human experts, end to end.
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