IT budgeting in manufacturing is often done one of two ways: as a percentage of revenue with a historical baseline, or as a list of known renewals and obvious replacements with a small contingency
added. Neither approach is wrong, exactly, but both tend to underinvest in the areas that create the most operational risk and overinvest in areas that are familiar rather than necessary.
The better framing is to start from operational dependency and work backwards to IT investment.
Starting From Operational Dependency
Every manufacturing facility has a set of systems whose failure directly impacts production. The ERP.The production scheduling tool. The quality management system. The network connecting the floor to those systems. For most manufacturers, those dependencies are understood implicitly but rarely mapped explicitly.
An explicit dependency map changes the IT budget conversation. Instead of “how much should we spend on IT,” the question becomes “what level of investment is required to maintain the reliability that our operational dependencies demand?” Those are different questions with different answers.
The Four IT Budget Categories That Matter Most in Manufacturing
What a Realistic IT Budget Looks Like for a Mid-Size Manufacturer
Industry benchmarks for IT spending as a percentage of revenue vary by manufacturer size and complexity, and applying a generic benchmark to your specific environment is not particularly useful. What is more useful is knowing the cost components of your current IT environment, what is aging and when it needs to be replaced, and what gaps exist between your current IT capability and the reliability your operations require.
That analysis gives you an IT budget that is grounded in operational reality rather than historical precedent. It also gives you the ability to have a better conversation with your CFO about IT investment, because the framing is operational risk rather than technology cost.
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