"Should we buy an ERP or build one?" is rarely about features — most platforms do the basics. It's about fit, control, and what your processes will look like in three years. Here's the framework we walk clients through.
When should you start with an off-the-shelf ERP?
- Your processes are standard and you're willing to adapt to the software.
- You need to be live in weeks, not months.
- You don't have the appetite to own ongoing development.
When should you consider a custom ERP?
- Your workflow is your competitive edge and bending it to fit a package would hurt.
- Per-seat licensing scales painfully as you grow.
- You need deep integration with existing systems an off-the-shelf product won't accommodate.
What does each option really cost?
Off-the-shelf isn't free once you add licensing, implementation, customization, and the workarounds your team invents for the gaps. Custom isn't just the build — it's hosting, maintenance, and iteration. Compare total cost of ownership over three to five years, not the sticker price. A useful worksheet: list per-seat licensing at your projected headcount in year three, add implementation and customization fees, and compare that single number against a custom build's development cost plus a realistic annual maintenance budget (commonly 15-20% of the original build cost).
The hybrid most teams land on
Often the answer is neither extreme: use proven building blocks for commodity needs (auth, payments, reporting) and build custom only where you genuinely differ. That keeps you fast where it doesn't matter and bespoke where it does. Our own School & Trust Management Platform case study follows exactly this pattern — a multi-module system (enrolment, online classes, finance, communications, reporting) built custom because no off-the-shelf school ERP matched the trust's specific multi-branch structure, while payments and notifications reuse the same building blocks we'd use anywhere else.
Watch for lock-in
Whichever path you choose, make sure you can get your data out and aren't betting the business on a single vendor's roadmap. Vendor lock-in is easy to underestimate at signing time and expensive to unwind later — ownership of your data and core logic is leverage worth protecting.
Weighing build vs buy? We'll give you an honest, evidence-based assessment — even when the answer is "buy".