Short answer
Use n8n or Power Automate when the steps are fixed and every app involved has an API. Add an AI agent only for steps that read free text or documents, with a person confirming anything about money or customers. Work that needs staff screens, permission levels and an audit trail is usually cheaper as a proper system.
Key points
- Small tasks repeated all day pay back first: 5 minutes × 40 a day is nearly 3 hours of staff time daily.
- n8n cloud starts at €20 a month for 2,500 executions; the self-hosted Community edition has no licence fee.
- Power Automate Premium is US$15 per user per month, so cost grows with headcount.
- Let the model interpret, let fixed steps act, and have a person confirm money, prices and customer messages.
- Silent failures and rules only one person understands mean the workflow has outgrown the tool.
What counts as business automation?
Business automation here means software that moves data and documents for you, not factory machinery or PLCs. Every automation has three parts: a trigger (something happens), actions (the steps), and a destination (where the result lands). A customer fills in a form, a record appears in the CRM, and the right salesperson gets a LINE message.
The biggest wins are rarely big projects. They are small tasks done dozens of times a day, such as copying orders from one channel to another. At five minutes an order and 40 orders a day, that is nearly three hours of someone's day, and every re-keyed order is another chance for a typo.
- per order
- 5 min
- orders a day
- 40
- of staff time, every day
- ~3 hrs
Which business tasks can be automated?
Good candidates are tasks you can write down step by step, where the source data lives in software that can export it. Count how many of these your company does by hand.
- Website or marketplace orders copied into a sheet or back office, then the packing team notified
- Supplier invoice emails: attachments filed by month and a payable record created
- Quote request forms turned into CRM leads and assigned to the salesperson for that region
- Daily sales from several branches summarised and sent to management every morning
- Appointment reminders to customers; alerts to managers when leave or purchase requests wait for approval
- Backups of key files, website uptime checks, low-stock alerts
What is n8n and how much does it cost?
n8n is a visual workflow builder: cloud plans start at €20 a month, or you can self-host the Community edition with no licence fee. Each box in a workflow is a step (receive a webhook, read a sheet, call an API, send a message), and built-in AI steps mean people use it for both ordinary automation and AI agents.
On n8n's pricing page (checked 27 September 2026), cloud Starter is €20 a month for 2,500 executions and Pro is €50 a month for 10,000, billed annually, with unlimited users and workflows on every plan. Self-hosting removes the licence fee but not the server bill, or the need for someone to update it, back it up and fix workflows when they stop.
n8n uses its own licence rather than an unconditional open-source one. Internal use is fine; read the licence before offering n8n-based services to your own customers.
Pro costs 2.5 times Starter and allows four times the executions.
Source: n8n pricing page, checked 27 September 2026. Self-hosted Community edition has no licence fee.
Who is Power Automate for?
Power Automate suits companies already on Microsoft 365: it connects most directly to Outlook, Teams, SharePoint and Excel on OneDrive, and its desktop flows drive Windows software that has no API (RPA).
On Microsoft's pricing page (checked 27 September 2026), Premium is US$15 per user per month, paid yearly, covering cloud flows and attended desktop flows. Unattended bots that run without a person present are US$150 per bot per month on the Process plan. Because pricing is per user, cost grows with the number of people who build or run flows.
AI agent vs automation: what is the difference?
An AI agent uses a language model to decide the next step; ordinary automation runs the same steps every time. An agent can read a customer email and choose whether to reply, route it to sales or open a complaint. That copes with messy input, but the result is never guaranteed and every run has a model cost.
The pattern that works: let the model do the interpreting (classify a document, pull figures from an invoice, draft a reply), let fixed steps do the rest, and have a person confirm anything involving money, prices or messages to customers. If the model misreads something, the damage stops at a draft instead of a customer's account.
- Model interpretsClassifies the document, pulls invoice figures or drafts a reply.
- Fixed steps actRecord, route and notify by rules written in advance.
- Person confirmsApproves anything touching money, prices or customer messages.
n8n vs Power Automate vs AI agent vs custom build
No option wins for every task, and many companies use more than one: Power Automate for internal paperwork, a custom system for the sales process the business runs on. Tool prices are from the vendors' pages on 27 September 2026 and can change.
| n8n | Power Automate | AI agent | Custom build | |
|---|---|---|---|---|
| Best for | Connecting many API-based services, with someone technical in-house | Microsoft 365 shops and desktop apps | Reading free text and documents | Core work that needs screens, roles and history |
| Cost model | Cloud from €20/month by executions, or self-host for the server cost | US$15 per user/month; unattended bot US$150 | Model cost per run plus the runner | One-off build plus hosting and support |
| Who builds and maintains it | IT or a technically minded staff member | Excel-savvy staff can build simple flows | Someone to design, test and watch the results | The development team you hire, with documentation your team can maintain |
| Where the data lives | n8n's cloud or your own server | Microsoft's cloud | Passes through the model provider; check PDPA | Wherever you choose |
| Where it stops | Too many workflows nobody understands | Per-user cost and work outside Microsoft | Results must be right every time, or model cost exceeds staff cost | Small jobs a tool already does |
When is a workflow tool not enough?
A workflow tool stops being enough when staff need a place to do the work, not just data moved between systems. These signs mean the process has outgrown the tool and needs its own screens, database and rules.
Signs the tool is not enough
- Staff open a spreadsheet mid-flow to fix data, because no screen exists for that step
- Business rules are spread across dozens of workflows one person understands
- Workflows fail silently and you find out when a customer chases
- You need per-role permissions and a record of who changed what
- Per-user or per-execution fees now rival the cost of building
A purpose-built system
- A screen for every step staff handle
- Rules in one place, with its own database
- Permissions by role
- A history of who changed what, and when
Is workflow automation safe under PDPA?
It can be, if you know which services personal data passes through, where it is stored and for how long. A workflow holds passwords and API keys for several systems in one place and sends data through several outside services.
- Create connections with company accounts, never an employee's personal account
- Give each connection only the permissions the task needs
- Alert on failed runs and keep the run history
- Send personal data to an AI model only where needed, and check the provider's data retention terms
Before you automate a process
- Can you write down every step, including what happens when data is missing or wrong?
- Do the source and destination systems have an API or an export?
- Do you know how often the task happens and how long it takes a person?
- Who maintains the workflow if the person who built it leaves?
- Does a person confirm steps involving money or customer messages?
- Do you know which services personal data passes through?
- Will someone be alerted when a workflow stops?
Frequently asked questions
Is n8n free?
The self-hosted Community edition is free of licence fees, but you still pay for the server and for someone to update and back it up. If you would rather not run it yourself, cloud plans start at €20 a month billed annually for 2,500 executions, per n8n's pricing page on 27 September 2026.
n8n or Power Automate: which should I choose?
Choose Power Automate if most of your work lives in Microsoft 365 or you need to drive desktop software; it is priced per user, from US$15 a month. Choose n8n if you connect many services through APIs; it is priced per execution or can be self-hosted, but it needs someone technical to look after it.
Can an AI agent replace an employee?
It can replace steps, not accountability. An AI agent reads, classifies and drafts quickly, but it still misreads things. The setups that work let the agent prepare the work and have a person check and confirm it, especially anything involving money, prices or messages to customers.
What is the difference between RPA and automation?
RPA drives desktop software the way a person would, for programs with no API. Ordinary automation moves data between systems through their APIs. In Power Automate, attended RPA (desktop flows with a person present) is in the US$15 Premium plan; unattended bots need the Process plan at US$150 per bot per month.
What does it cost to have business automation built?
It depends on how many systems are connected, how complex the rules are, and whether staff need their own screens. Connecting two or three services with an off-the-shelf tool mostly costs the tool's monthly fee. Work that needs a proper system is priced like any software project, scoped from the workflow itself.