The verdict in three sentences
A London SME automating 2 to 3 manual processes typically invests 8,000 to 35,000 EUR in 2026, plus 20 to 500 EUR/month in tooling (n8n, Make, Zapier). The concrete gain is 15 to 25 hours recovered per week, meaning a ROI reached in 6 to 12 months depending on volume. The golden rule: prioritise by impact, never automate everything at once.
Which processes to automate first
Not all processes are equal. Those combining high volume, clear rules and few exceptions deliver the best return. Conversely, a rare or exception-heavy process is expensive to automate for little gain.
| Candidate process | Frequency | Hours/week saved | Complexity | Priority |
|---|---|---|---|---|
| Order / quote entry | Very high | 6 to 10 h | Medium | High |
| Overdue invoice reminders | High | 3 to 5 h | Low | High |
| Client onboarding / files | Medium | 2 to 4 h | Medium | Medium |
| Weekly reporting | High | 3 to 6 h | Low | High |
| Bank reconciliation | Medium | 2 to 4 h | High | Medium |
| Standard support replies | Very high | 4 to 8 h | High | Medium |
The winning move: map these processes, quantify the real hours spent, then tackle the two or three lines combining high frequency and low complexity.
What it really costs in 2026
The budget depends mostly on the number of tool-to-tool connections and the level of business logic. Here are the 2026 orders of magnitude observed in London.
| Scope | Tools | Project cost (EUR) | Monthly subscription | Timeline |
|---|---|---|---|---|
| 1 simple process | Make or Zapier | 8,000 – 12,000 EUR | 20 – 80 EUR/mo | 3 – 5 weeks |
| 2-3 linked processes | Self-hosted n8n | 15,000 – 25,000 EUR | 50 – 200 EUR/mo | 6 – 9 weeks |
| Advanced orchestration | n8n + custom API | 25,000 – 35,000 EUR | 200 – 500 EUR/mo | 8 – 12 weeks |
Self-hosted n8n quickly pays off beyond a few thousand operations per month, where Zapier bills per task. Also budget 10 to 15 % of the annual cost for maintenance and monitoring.
Mini case study
Claire, CFO of a 40-employee industrial SME in London, spends 22 hours/week across three people re-entering orders and reminders. She automates two processes (order entry + reminders) for 19,000 EUR, plus 120 EUR/month of n8n. Result: 17 hours/week recovered, roughly 74 hours/month valued at 35 EUR/h fully loaded = 2,590 EUR/month saved. The project pays for itself in 7.5 months, not counting fewer entry errors.
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FAQ
Do we need to replace our business tools to automate?
No, in 80 % of cases we connect the existing stack via API or connectors. Replacing an ERP or CRM is only justified when the current tool exposes no interface, which is rare in 2026.
n8n, Make or Zapier: which to choose?
Zapier and Make suit low volumes and quick starts (20 to 80 EUR/month). Self-hosted n8n becomes cheaper beyond several thousand monthly operations and offers full data control, a real GDPR advantage.
How soon do we see ROI?
Between 6 and 12 months for a scope of 2 to 3 well-chosen processes. Invoice reminders, highly profitable, often pay back in under 6 months.
What is the risk if an automation fails?
A solid project includes monitoring, alerts and manual fallback procedures. Budget 10 to 15 % of the annual cost for maintenance to guarantee continuity.
Can we automate without an internal tech team?
Yes: we deliver documented workflows and train your teams. Routine supervision takes a few hours a month, and we remain available for support.
Let's scope your project. Tell us your 2-3 most time-consuming processes and an indicative budget (8,000 to 35,000 EUR), and we will quantify the gains hour by hour. 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.
