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 is supplier-neutral and 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.