The verdict in three sentences
A CFO still consolidating figures by hand in spreadsheets decides 15 to 30 days late and risks a data-entry error at every close. A custom decision dashboard (12,000 to 30,000 EUR) plugs straight into the ERP, bank feeds and CRM, showing cash, margin and DSO in real time. The question is not the cost of the tool, but the cost of continuing to steer blind.
Custom vs Power BI: the real 2026 math
The comparison is not about licences but about integration and maintenance. A self-service tool like Power BI is cheap per seat but assumes someone builds and maintains the connectors. A custom dashboard bakes all of that into the package.
| Criterion | Power BI / Looker | Custom dashboard |
|---|---|---|
| Licence | 10 to 20 EUR/user/month | 0 (owned) |
| Multi-source integration | 8,000 to 20,000 EUR (agency) | Included |
| Upfront investment | 8,000 to 22,000 EUR | 12,000 to 30,000 EUR |
| Business-specific KPIs | limited to model | 100% bespoke |
| Year-2 maintenance | 3,000 to 6,000 EUR | 1,500 to 4,000 EUR |
| Vendor lock-in | high | none |
| Time to deploy | 4 to 8 weeks | 6 to 10 weeks |
Below 5 users with standard needs, Power BI still makes sense. As soon as steering requires proprietary business metrics (margin per project, cash per subsidiary, customer cohort), custom becomes cheaper over 3 years.
What real time actually changes
The gain is not cosmetic. It hits the close and decision processes.
| Metric | Before (spreadsheets) | After (dashboard) |
|---|---|---|
| Monthly close time | 8 to 10 days | 3 to 4 days |
| Reporting time / month | 20 to 30 h | 2 to 4 h |
| Cash data freshness | D-15 to D-30 | D or D-1 |
| Data-entry error risk | high | near zero |
| Consolidated sources | copy-paste | automatic |
| Mobile access for board | no | yes |
A close accelerated by 5 days frees the CFO for analysis rather than collection. That is the real return on investment.
Mini case study
Claire, CFO of a 45-person manufacturing SME in London, spent 3 days a month consolidating exports from her ERP, bank and CRM. At 55 EUR loaded hourly cost, that is roughly 3 x 8 x 55 = 1,320 EUR/month, nearly 15,800 EUR/year of CFO time swallowed by data collection. A custom dashboard at 22,000 EUR pays back in 17 months on that line alone, before counting cash decisions taken earlier. By month 2, her close dropped from 9 to 4 days.
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FAQ
What does a custom decision dashboard really cost in 2026?
Budget 12,000 to 30,000 EUR depending on the number of sources and KPI complexity. A project with 3 sources (ERP, bank, CRM) and 15 indicators sits around 18,000 to 22,000 EUR.
How long does it take to deploy?
Between 6 and 10 weeks. The longest phase is mapping sources and defining margin calculation rules, not building the interface.
Do I need a data warehouse to start?
Not necessarily. For 3 to 5 sources, a direct synchronisation layer is enough. A warehouse becomes useful beyond 6 sources or for heavy historisation.
Isn't Power BI enough?
For standard reporting, yes. As soon as you need proprietary business metrics and robust integration without licence dependency, custom is cheaper over 3 years.
Is the dashboard available on mobile for the board?
Yes, a custom dashboard is responsive by default: the CEO checks cash and margin from their phone, with data at D or D-1.
Let's scope your project. Tell us your sources (ERP, bank, CRM), your 10 to 15 priority KPIs and an indicative budget, and we will frame the exact scope. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
