By RIOD Engineering · April 24, 2026
Custom CMS vs Off-the-Shelf: The Honest Break-Even Math
SaaS charging platforms are the right choice for many operators. At 10 chargers, licensing a platform beats hiring an engineering team. At 500 chargers with unusual workflows and margin pressure, the same platform starts costing more than it earns.
This is the break-even calculation, and the honest answer for when SaaS still wins.
The cost model, laid out
SaaS platforms typically charge a per-charger monthly fee, often in the USD 8-25 range for CPO features. At 300 chargers that's USD 2,400-7,500 per month, or USD 29k-90k per year, forever, growing with your fleet.
A custom build is a one-time engineering cost, typically USD 60k-350k for a comparable feature set, plus your own hosting (a few hundred dollars a month) and optional AMC (USD 3k-15k per month). Break-even against SaaS falls somewhere between 18 and 36 months for most CPOs above a few hundred chargers.
When SaaS is still the right answer
You're under 100 chargers with no plans to scale fast. The SaaS platform's included features cover your workflows. You do not need custom integrations or unusual roaming or specialised billing.
White-labeling is not part of your business model. You're happy paying per-charger indefinitely because you're passing that cost through. This is a real and honest set of conditions; a custom build for a 30-charger operator is overbuilt.
When custom wins
You're past 300 chargers and growing. Every new charger increases your SaaS bill and adds no new features you didn't already have. You're paying for scale you're providing.
You need workflows the SaaS doesn't support. Multi-party settlement, unusual tariff structures, integration with your own ERP, custom driver app branding, offline-first operations. Every SaaS platform draws a line somewhere; if your business crosses it, custom is the answer.
You want your platform to become part of your product story: the OEM path, the franchise path, the licensed-to-others path. SaaS locks you out of that; custom opens it.
Break-even bands
| Fleet size | Recommendation |
|---|---|
| Under 100 chargers | SaaS usually wins on total cost and time to value |
| 100 to 300 chargers | Depends on custom workflows, integrations, and margin structure |
| 300 to 500+ chargers | Custom build starts making economic sense (OEM white-label often flips earlier) |
Questions before choosing custom
- Do you need billing rules the SaaS platform does not model?
- Are you white-labeling the platform to your own customers?
- Do you need ERP, CRM or HRMS integrations the SaaS does not offer?
- Do you need OCPI roaming with specific partners?
- Do you need offline or basement-first workflows?
- Do you need full raw-data ownership for future AI or analytics?
Hidden SaaS costs to price in
- Per-charger monthly fees, often escalating with volume
- Per-transaction or per-session fees on billing
- Support and SLA tier fees
- Integration and connector fees
- Data export limitations that force you to keep paying
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