Signals it might be time to consider ERP — and signals it isn’t
the most important question in any ERP conversation is whether ERP is actually the right answer. most businesses that think they need an ERP need better processes and possibly a better accounting software integration. ERP is the right answer for a specific set of problems — and a costly mistake for everything else.
“it’s not a bookkeeping software problem. it’s a fragmented-systems problem. those are two different diagnoses with two different solutions.”
The ERP landscape — a vendor-neutral overview
the ERP market is large, confusing, and full of vendors whose primary interest is in selling you their product. here is a category-level overview — not a recommendation, not a vendor pitch. the right ERP for a given client depends on their specific situation, not on which vendor we happen to prefer.
Enterprise tier
NetSuite, SAP S/4HANA, Microsoft Dynamics 365 — for businesses at scale (typically $50M+ revenue) that need global operations, sophisticated reporting, and have the internal resource to manage a complex system. implementation costs are significant (six figures to seven figures) and internal capability requirements are high. rarely appropriate for the clients of small and mid-size CPA firms.
Mid-market tier
SAP Business One, Microsoft Dynamics 365 Business Central, Sage X3, Acumatica — the right tier for businesses with real complexity but not enterprise scale. typically $5M–$50M revenue, manufacturing or multi-entity operations, and a need for consolidated financial reportingthat accounting software can’t produce. implementation timeline 3–9 months, costs $30K–$150K depending on scope and customisation.
SME and open-source tier
ERPNext, Odoo— genuinely powerful systems at a fraction of the mid-market tier cost. ERPNext in particular is the system we implement most often through our group’s IT arm — it has strong manufacturing, multi-entity, and eCommerce modules, and the open-source model means no licence lock-in. implementation requires technical competence (it’s not plug-and-play) but the total cost of ownership can be dramatically lower than mid-market alternatives. worth serious consideration before defaulting to the branded options.
Industry-specific ERP
some industries (construction, healthcare, non-profit, professional services) are better served by industry-specific platforms than generic ERP. we assess these case by case — the right answer depends on the client’s specific workflow requirements, not on a general framework.
What total cost of ownership actually looks like
the most common mistake in ERP evaluation is comparing licence or subscription costs without accounting for everything else. the sticker price is a fraction of the real cost.
| Cost category | SME / open-source | Mid-market | Enterprise |
|---|---|---|---|
| Licence / subscription (annual) | $0–$15K | $15K–$60K | $60K–$250K+ |
| Implementation (one-off) | $15K–$50K | $40K–$150K | $150K–$1M+ |
| Customisation | $5K–$30K | $20K–$80K | $50K–$500K+ |
| Data migration | $3K–$15K | $10K–$40K | $25K–$200K |
| Training (staff time) | 2–4 weeks | 4–8 weeks | 8–16 weeks |
| Annual maintenance & support | $5K–$15K | $15K–$40K | $40K–$150K+ |
| Internal champion time (ongoing) | 0.25–0.5 FTE | 0.5–1 FTE | 1–3 FTE |
the comparison that often surprises CPA firm clients: when they add up their current tech stack — accounting software subscription, CRM subscription, inventory platform, e-commerce platform, manual integration maintenance, and the staff time spent reconciling between them — the total is sometimes comparable to a mid-market ERP that eliminates all of it. the ERP looks expensive until you price the fragmented alternative properly.
Vendor comparison — the five systems we most commonly evaluate
these are the five ERPs that come up most frequently in our advisory engagements with CPA firm clients. one short, honest assessment of each.
| System | Best for | Strengths | Weaknesses | Indicative cost | Timeline |
|---|---|---|---|---|---|
| ERPNext | SME — manufacturing, services, multi-entity | Open-source, no licence lock-in. strong manufacturing and project modules. excellent value for complexity delivered. | Requires technical resource to configure well. community support can be inconsistent. UI is improving but still behind commercial products. | $15K–$60K all-in | 2–5 months |
| Odoo | SME — eCommerce, retail, services | Modular — pay only for what you use. strong eCommerce and CRM integration. faster implementation than most mid-market ERPs. | Licence costs escalate quickly as modules are added. some modules are more mature than others. customisation can become complex. | $20K–$80K all-in | 3–6 months |
| Acumatica | Mid-market — distribution, construction, field services | Consumption-based pricing (not per-user). strong for distribution and construction. genuinely cloud-native. good for remote teams. | Less well-known means fewer implementation partners. pricing can be opaque. not the strongest for pure manufacturing. | $40K–$120K all-in | 4–8 months |
| SAP Business One | Mid-market manufacturing and distribution | Deep manufacturing functionality. strong supply chain. the SAP name carries weight with bank and enterprise partners. | Expensive relative to alternatives at the same market tier. implementation requires SAP-certified partners. licensing model is complex. | $60K–$180K all-in | 5–9 months |
| Microsoft Dynamics 365 BC | Mid-market businesses in the Microsoft ecosystem | Deep Microsoft 365 integration (Teams, Excel, Outlook). strong finance module. familiar UI for Microsoft-heavy organisations. | Can feel like buying a platform to use 20% of its capability. partner quality varies significantly. total cost adds up fast with full Microsoft stack. | $50K–$150K all-in | 4–8 months |
How we help — advisory through implementation
our ERP advisory engagements follow a consistent structure. the goal is always the same: the client ends up with the right system for their actual situation — not the one we find easiest to sell, not the one with the best margins for us. that same honesty runs through how we engage with CPA firms across every service.
post-go-live, the same offshore team that runs the new ERP can also pick up your client’s ongoing virtual CFO needs — forecasting, KPI tracking, and strategic finance built on the cleaner data the ERP now produces.
What we won’t do
this section exists because CPA firm clients have been burnt by ERP engagements where the advisor’s incentives weren’t aligned with theirs. we want ours to be explicit.
We won’t push a specific ERP because it pays us more.our recommendation is based on fit, not margin. if ERPNext is the right answer, we say ERPNext. if Dynamics 365 BC is the right answer and we’re not the best implementation partner for it, we tell you who is.
We won’t promise unrealistic implementation timelines.ERP projects overrun because advisors under-promise to win the engagement and then manage the overrun as “normal.” we scope conservatively and flag risks before the contract is signed.
We won’t implement on top of broken processes. if the underlying business processes are broken, an ERP makes them faster and more expensive. process design work comes before system selection — every time.
We won’t ignore the change management question. ERP implementations fail more often from change management failures than from technical failures. who owns this internally, how is training happening, and what does the rollout sequence look like are questions we ask before the engagement starts.
AI and automation solve workflow efficiency without the complexity and cost of ERP. if the issue is that your current systems work but the processes running on them are slow or error-prone, that’s a different conversation. see our AI and automation page for that one.