What SAP Actually Costs
SAP offers several products targeting different market segments. For growing businesses, the most relevant options are SAP Business One (targeting small and mid-size businesses) and SAP S/4HANA Cloud (targeting mid-market and enterprise). Here is what they actually cost to deploy:
| SAP Product | Target Company Size | Licence Cost | Implementation Cost |
|---|---|---|---|
| SAP Business One | 10–50 employees | $3,200–$5,400/named user (perpetual) or $95–$150/user/month | $40,000 – $150,000 |
| SAP S/4HANA Cloud (Essential) | 50–250 employees | $1,500–$3,000/user/year | $100,000 – $400,000 |
| SAP S/4HANA Cloud (Advanced) | 250+ employees | Negotiated enterprise contract | $300,000 – $2,000,000+ |
Implementation costs are paid to a SAP partner — a certified consultancy — on top of SAP's own licence fees. For a 25-person business implementing SAP Business One, the total first-year cost including licences and implementation typically runs $80,000–$200,000. And that is before any customisation, which requires SAP's proprietary ABAP development language and consultants charging $200–$400 per hour.
What a Custom ERP Costs
A custom ERP built by a professional development team covers the same functional scope as SAP Business One at a comparable first-year cost — and a significantly lower ongoing cost. Here is what a custom ERP typically costs for a growing business:
- $75,000 – $150,000 for a focused custom ERP covering finance, inventory or job management, and HR for a 10–30 person business
- $150,000 – $300,000 for a full-module custom ERP covering finance, HR, inventory, CRM, and reporting for a 30–100 person business
- $10,000 – $25,000 per year in hosting and maintenance (versus $40,000–$120,000 per year in SAP licence and support fees)
- Zero per-user fees — adding 10 new employees costs nothing in licence fees
- Any future customisation uses standard developers at $80–$150 per hour — no proprietary language or certified consultants required
The upfront investment is similar to SAP Business One in year one. The fundamental difference is that the custom ERP is an asset you own, while SAP is a service you rent — and renting costs grow every year as your team grows.
Feature Comparison: Custom ERP vs SAP Business One
Both solutions cover the core ERP functional areas. The real differences are in flexibility, ownership, and the cost of making changes over time.
| Feature Area | SAP Business One | Custom ERP |
|---|---|---|
| Financial management | ✅ Comprehensive out-of-the-box | ✅ Built to your chart of accounts and processes |
| Inventory and warehouse | ✅ Full-featured with standard workflows | ✅ Built around your specific stocking and fulfilment model |
| HR and payroll | ⚡ HR module exists; payroll often requires add-on | ✅ HR and payroll integration built as required |
| CRM and sales pipeline | ⚡ Basic CRM; advanced features require SAP CRM add-on | ✅ Full CRM tailored to your sales process |
| Reporting and dashboards | ✅ Solid pre-built reports | ✅ KPIs specific to your business, not SAP's generic model |
| Mobile access | ✅ SAP mobile app available | ✅ Custom mobile interface built if required |
| Third-party integrations | ✅ Wide SAP ecosystem | ⚡ Built as needed — any integration is possible |
| Customisation | ⌠Requires ABAP developers at $200–$400/hr | ✅ Any developer at standard market rates |
| User count costs | ⌠Grows with every new hire | ✅ Fixed regardless of team size |
| Vendor dependence | ⌠SAP controls pricing, features, and support | ✅ None — you own the codebase |
When SAP Makes Sense
SAP is the right choice in a specific set of circumstances. Outside those circumstances, you are paying for features you will never use and governance complexity that slows your business down.
- You have 200 or more employees and need true enterprise-grade transaction volumes and compliance reporting
- Your industry has deep SAP specialisation — manufacturing, automotive, chemicals — where SAP's preconfigured industry templates are genuinely valuable
- You are planning an acquisition or merger with a company that runs SAP, and system compatibility simplifies integration
- Your enterprise customers require their suppliers to be SAP-certified or SAP-compatible for data exchange
- You have an existing SAP ecosystem where the investment in data connectors and training is already made
- You need a globally distributed ERP serving 10 or more country entities with different statutory reporting requirements
When a Custom ERP Wins
For the majority of growing businesses in the $5M–$100M revenue range, a custom ERP delivers better value than SAP. Here is when the case for custom is strongest:
- Your workflows are non-standard — unusual pricing models, unique job types, or industry-specific compliance requirements that SAP's generic templates do not fit
- You have fewer than 150 employees and do not need the global enterprise complexity SAP is designed for
- You want to avoid indefinite per-user licence fees that grow with every hire
- You have tried SAP or NetSuite and found the implementation costs prohibitive or the customisation complexity unmanageable
- You want to own your ERP as a business asset and not depend on a vendor relationship for system changes
- Your business processes are a source of competitive advantage — they should be built into software that nobody else has access to
Total Cost of Ownership: 5-Year Comparison
The most important metric is not the year-one cost but the five-year total cost of ownership. Here is a comparison for a 30-person business needing finance, inventory, HR, CRM, and reporting — a typical mid-market ERP scope:
| Cost Category | SAP Business One (30 users) | Custom ERP |
|---|---|---|
| Year 1 (build + licences + implementation) | $180,000 – $250,000 | $175,000 – $220,000 |
| Year 2 (licences + support + customisation) | $55,000 – $90,000 | $18,000 – $25,000 |
| Year 3 | $60,000 – $100,000 | $18,000 – $25,000 |
| Year 4 | $65,000 – $110,000 | $20,000 – $30,000 |
| Year 5 | $70,000 – $120,000 | $20,000 – $30,000 |
| 5-Year Total | $430,000 – $670,000 | $251,000 – $330,000 |
| Saving with custom ERP | — | $180,000 – $340,000 |
These figures assume the team grows from 30 to 45 users over five years. SAP's per-user fees grow with every hire. The custom ERP's running costs are flat. By year five, the custom ERP is typically $180,000–$340,000 cheaper in total — and it belongs to you.
Migration Considerations: Moving From SAP to Custom or Starting Fresh
If you are already on SAP and evaluating a move to custom, there are important migration considerations to plan for before committing to a switch.
Data Migration From SAP
SAP stores data in a complex proprietary schema. Extracting your historical data — customer records, transaction history, inventory data, HR records — requires a data migration project typically costing $15,000–$50,000 depending on data volume and quality. SAP's ABAP reporting tools can export data to standard formats, and professional migration is a well-understood process. The main risk is data quality: issues in your SAP implementation become visible during migration and require time to clean and reconcile before the cutover.
Parallel Running
Most businesses switching from SAP to a custom ERP run both systems simultaneously for 4–8 weeks during the cutover period. This adds operational complexity but dramatically reduces the risk of losing continuity if something unexpected emerges in the new system. Plan for dedicated staff time during parallel running — this is not something to layer on top of existing workloads without acknowledgement and resource allocation.
Starting Fresh Without SAP
For businesses not yet on SAP, the decision is simpler. You are comparing the cost of building a custom ERP against the cost of SAP implementation and ongoing fees. For businesses under 100 employees without significant multinational complexity, custom wins on cost, flexibility, and ownership in almost every scenario. The exception is when your industry has deep SAP-specific compliance frameworks that would cost more to replicate in custom than to license from SAP directly — in that case, a hybrid approach (SAP for compliance reporting, custom for operations) is worth exploring.
Find Out Whether Custom ERP Is Right for You
We will review your current systems, map out what a custom ERP would cover, and give you an honest cost comparison against SAP — with no obligation.
Book a Free Consultation