On n8n vs Power Automate, the short answer is this: use Power Automate when the work stays inside Microsoft 365, IT wants tenant level governance or someone must drive a Windows desktop app with no API, and use n8n when a workflow crosses many non Microsoft systems, needs heavy branching or AI agent steps, or runs at a volume where per user licensing gets awkward. Many Microsoft shops end up running both.
The cost of a wrong pick shows up later. A flow that started as an Outlook rule grows a CRM lookup, a premium connector and three more people who trigger it, and the license count changes. Or an n8n build reaches into SharePoint through an app registration nobody in IT approved, and security shuts it off.
A disclosure before the detail: Benian builds workflows in n8n, in accounts our clients own. We still recommend Power Automate when it is the better fit, and this page says where that is. Plan names and prices change often, so we describe each cost model and leave current numbers to Microsoft and n8n.
Where Microsoft 365 firms get stuck between n8n and Power Automate
A premium connector changes who needs a license
Standard connectors like Outlook and SharePoint run under many Microsoft 365 licenses. One HTTP call or premium connector can mean every person who runs the flow needs a paid Power Automate license.
Graph permissions nobody planned for
n8n reaches Outlook, SharePoint and Teams through an app registration in Microsoft Entra ID. If the registration asks for broad permissions without admin review, IT will block it, and it should.
Logic that outgrows the designer
Nested loops, retries per record and data reshaping across several APIs get hard to read in a long cloud flow. n8n lets you drop into a Code node, which helps and also needs someone who can read the code.
A desktop app with no API
Old accounting or ERP screens that only work on Windows need desktop RPA. Power Automate has it. n8n does not drive desktop screens.
AI steps with no review point
Drafting replies or classifying documents with a language model is easy to add in either tool. Deciding which outputs a person must approve before they leave the building is the harder design work.
The short answer: Power Automate inside Microsoft, n8n across everything else
Choose Power Automate if your files live in SharePoint and OneDrive, approvals happen in Teams and Outlook, users sit in Entra ID and you have a Microsoft admin who already manages the tenant. Flows inherit sign in, audit and data loss prevention policies you already run. Built in approvals pause a flow for days and resume when a manager clicks Approve in Teams.
Choose n8n if the process runs through a CRM, an e-commerce platform, a phone system, a billing tool and a database, with Microsoft as one stop among several. Choose it too if you need many steps per record, custom API calls, an AI agent that picks its own tools, or you want the automation running on a server you control.
Then ask who maintains it at month six. A firm with an in house Power Platform admin should usually stay in Power Automate for Microsoft only work. A firm with an operations engineer, or a partner who documents the build in your account, can run n8n well.
Connecting n8n to Outlook, SharePoint, Teams and Excel through Microsoft Graph
This is the part that decides whether n8n fits a Microsoft shop. n8n has built in nodes for Outlook, Teams, OneDrive, SharePoint and Excel in Microsoft 365, and an HTTP Request node for any Microsoft Graph endpoint the built in nodes do not cover. All of them authenticate through an app registration you create in your own Entra ID tenant.
The setup has four steps. An admin registers an app in Entra ID, adds the n8n callback address, grants only the Graph permissions the workflow needs and records the client ID and secret in an n8n credential. Delegated permissions act as a signed in user. Application permissions act as the app across the tenant and usually need admin consent, so scope them tightly, for example to specific SharePoint sites instead of every site.
Two exceptions to plan for. Client secrets expire, so put the expiry date on someone's calendar or the workflow fails quietly on that day. And Teams messages sent by an app read differently from messages sent by a person, which matters if staff expect a named colleague.
- Outlook: watch a shared inbox, file attachments to SharePoint, draft replies for review.
- Excel in Microsoft 365: read and append rows in a workbook stored in OneDrive or SharePoint.
- Teams: post alerts to a channel or chat when a workflow needs a person.
- Graph through HTTP Request: calendar availability, user lookups, group membership and other endpoints.
Licensing models: per user and per process vs per execution and self hosted
Power Automate cost depends on the connectors a flow touches, how many people run it and whether a robot runs unattended. Many Microsoft 365 licenses include cloud flows on standard connectors. Premium connectors, custom connectors, HTTP actions and on premises data generally need a paid license, sold per user or per flow. Unattended desktop RPA and AI Builder capacity are priced separately.
n8n cost depends on where it runs. Its cloud service charges by executions, where one run of a workflow counts once no matter how many steps it has. That favors workflows with many steps per run. n8n can also be self hosted on your own server, where your costs become the server, backups, updates and the person who maintains them, plus a paid license if you need enterprise features. Self hosting is not free in practice; it moves the cost from a subscription to upkeep.
To compare honestly, count the runs per month, the steps per run, the people who trigger each flow and the premium systems involved. Then price both against the vendors' current pages on the same day.
AI agents: Copilot Studio vs n8n AI agent nodes
Microsoft's agent tool is Copilot Studio, which sits beside Power Automate and can call flows as actions. It suits agents that answer staff from SharePoint content and act inside Microsoft systems, under the same tenant controls. Its billing is separate from Power Automate, and its model choices follow Microsoft's offering.
n8n has an AI Agent node that connects to a model provider you choose, gives the model tools such as a CRM lookup, a database query or another workflow, and keeps conversation memory. Because the agent sits inside an ordinary workflow, you can put checks before and after it: validate the output, route low confidence cases to a person in Teams, and log every decision.
Either way, the design question is the same. Decide which actions an agent may take alone, which need a person's approval and what gets logged. If you cannot answer that yet, start with a workflow that drafts and a person who sends.
Security and compliance: Entra ID, DLP and self hosted data control
Power Automate runs inside your tenant. Admins set data loss prevention policies that stop a flow from moving data between business and non business connectors, separate environments for testing and production, and see flows in the admin center. For a regulated firm with an established Microsoft security team, that is a strong reason to stay.
n8n gives a different kind of control. Self hosted, the workflow data and execution logs stay on infrastructure you choose, which some firms need for client data. Access to Microsoft data is limited by the app registration's permissions, which your admin grants and can revoke. Single sign on through Entra ID depends on the n8n edition you run. Neither tool makes a process compliant by itself; your policies and how the build follows them do.
Running both: a common split for Microsoft shops
Many firms keep personal and team automations in Power Automate and run cross system operations in n8n. Staff build their own approval and file routing flows inside the tenant. The workflows that touch the CRM, billing, phones and outside APIs run in n8n, with Teams as the place where people get alerts and approve exceptions.
Draw the line by system, not by preference. A useful rule: if a flow reads or writes anything outside Microsoft 365 more than once, it belongs in n8n; if it only moves Microsoft content between Microsoft apps, it stays in Power Automate. Write that rule down so two tools do not end up automating the same step.
Getting the build documented in your own tenant or n8n account
Whichever tool you pick, the work should live in accounts your business owns. Power Automate flows should sit in a production environment owned by a service account, not in one employee's personal flows. n8n workflows should run in your own n8n account or server, with credentials created in your systems and an export kept in your files.
Benian builds in the client's own n8n account with credentials the client holds, and we document each workflow: what triggers it, what it touches, which Graph permissions it uses and who to call when it fails. When the work belongs in Power Automate, we say so, and you should not hire us to rebuild a set of working Microsoft only flows. Start with a small, high volume process before you move anything critical, and track two numbers from week one: failed runs and how long each failure took to notice.
How to decide in one afternoon
- List the five workflows that cost the most time. Write each one as trigger, systems touched, people involved and runs per month.
- Mark the systems outside Microsoft 365. A workflow that touches two or more non Microsoft systems leans toward n8n.
- Find any desktop only steps. If a person types into a Windows app with no API, that step needs Power Automate desktop flows or a different fix.
- Ask IT about Graph permissions. Confirm whether they will approve an app registration and which permissions, before anyone builds in n8n.
- Price both on the same day. Use your run counts, steps per run and user counts against each vendor's current pricing page.