Planning guide

Warehouse Automation Business-Case Assumptions: What to Validate Early

Early planning ranges are useful for internal discussion but are not approval-ready. Understanding which assumptions carry the most uncertainty helps focus validation before presenting the case to finance and other decision-makers.

Key assumptions to validate

Labour impact

How many FTEs could be redeployed, and to which roles? Labour impact assumptions are typically the largest single driver in an automation business case. They require validation with HR and operations leadership, not just headcount estimates.

To validate: Confirm with HR and operations: redeployment plan, natural attrition rate, training needs, and any employment implications.

Throughput impact

What is the expected improvement in order lines per hour, picks per operator, or transport movements? Throughput assumptions should be based on measured baseline data, not estimates. Gaps between estimated and measured data directly affect payback calculations.

To validate: Measure current baseline before finalising assumptions. Request comparable deployment data from suppliers.

Investment range

What is the expected total investment, including hardware, software, integration, infrastructure, implementation, internal project effort, training, and contingency? Early investment ranges from suppliers are typically budgetary and carry significant variability until scope is confirmed.

To validate: Request separate line items for each cost category. Validate integration, infrastructure, and internal project costs independently.

Implementation effort

How long will implementation take, and what internal resource will it require? Timeline and internal effort assumptions affect both the cost side and the benefit timing of the business case. Implementation delays extend payback periods.

To validate: Request timelines from comparable deployments. Confirm internal project management, IT, operations, and training capacity.

Ongoing operating costs

What are the annual maintenance, software, and support costs after go-live? Ongoing costs are frequently underestimated in early business cases. Software licensing, maintenance contracts, and support fees add meaningfully to the total cost of ownership.

To validate: Request five-year total cost of ownership, not just the initial investment figure.

Sensitivity checks

How much do payback and outcome ranges change if volume growth is lower than expected, if implementation takes longer, or if benefit realisation is delayed by 12 months? Sensitivity analysis helps stakeholders understand a range of realistic scenarios, not only the base case.

To validate: Build at least a cautious case, a base case, and a favourable case before presenting internally.

Data confidence

How reliable are the volume figures, stock records, and operational measurements that underlie the business case? Low data confidence should be disclosed explicitly. Finance stakeholders and suppliers will raise it if you do not.

To validate: Document which inputs are measured, which are estimated, and what the likely variance is.

Structure business-case assumptions from your assessment

Answer 21 structured questions and receive indicative planning ranges, a structured assumptions overview, and supplier questions for further validation.

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Warehouse Automation Readiness Supplier Questions Methodology