What Does an ERP Implementation Cost in the UK?

Why the licence is the small part

The mistake that wrecks ERP budgets is anchoring on the software subscription. For most implementations the licence is a minority of the total cost. The implementation itself, the integration, the data migration and the internal effort typically dwarf it. A rule of thumb many organisations find sobering is that implementation services alone often run to several times the annual licence, and sometimes far more.

What actually drives the number

Scope and complexity

How many processes, how many entities, how many countries, how much integration to other systems. A single entity finance rollout and a multi country, multi module transformation are different animals with different budgets.

Configuration versus standard

Every process you insist on customising rather than adopting as standard adds cost, at implementation and then every time you upgrade, forever. Heavy customisation is the most common reason a controlled budget becomes an uncontrolled one.

The state of your data

Clean, well understood data is cheap to migrate. Poor data is expensive, and the cost usually surfaces late, when it is hardest to absorb. Data is the classic hidden cost.

Your own people’s time

The internal effort is real and routinely left out of the business case. Your best people will be pulled onto the programme, and either you backfill them, which costs money, or the day job suffers, which also costs money.

The hidden costs that cause overruns

• Data remediation nobody budgeted for, discovered during migration
• Integration to systems that turned out to be more entangled than assumed
• Change and training, cut to save money, paid back later in poor adoption
• Post go live stabilisation, the weeks or months of support after launch that plans often ignore
• Backfill for the people seconded to the programme

How to build a budget you can trust

• Cost the whole programme over five years, not the first year subscription
• Include internal effort and backfill explicitly
• Assume the data is worse than you have been told, because it usually is
• Hold a realistic contingency, not a token one
• Be ruthless about standardising rather than customising

The honest summary

A well scoped ERP implementation for a mid sized organisation is a significant investment, and the total is driven far more by scope, data and customisation than by the software price. Anyone quoting a confident fixed figure without understanding those is quoting a number that will move. The way to avoid an overrun is not a cheaper quote, it is an honest scope and a realistic view of your data.

We help organisations build defensible ERP business cases and cost them properly. See ERP vendor selection or get in touch.