A Nintex renewal often forces a useful question: are you paying for capability your business no longer needs, or protecting processes that would be expensive to disrupt? For organisations already using Microsoft 365, can Power Automate replace Nintex is rarely a simple yes or no. It depends on what your workflows actually do, who owns them and how reliably they need to run.
Power Automate can handle a substantial share of the approval, notification, document-routing and data-entry processes previously built in Nintex. It is already part of the Microsoft ecosystem, works closely with SharePoint, Teams, Outlook and Power Apps, and may be available within licences you already pay for. But a like-for-like replacement is not automatic. Treating it as one is how a cost-saving exercise turns into a queue of broken forms and frustrated users.
Where Power Automate can replace Nintex well
For straightforward business processes, Power Automate is a credible and often sensible replacement. Think annual leave requests, purchase approvals, contract review reminders, new starter checklists, controlled document sign-off and alerts when key SharePoint data changes. These workflows tend to have a clear trigger, a small number of decisions and a defined outcome.
The advantage is not merely licence cost. A workflow built around SharePoint lists, document libraries, Teams approvals and Outlook notifications sits where people already work. Staff do not need to move between separate systems to complete a routine task. That can reduce manual chasing, improve visibility and make ownership clearer.
Power Automate is particularly effective when paired with a well-designed SharePoint information structure. A purchase request, for example, can be captured through a SharePoint list or Power Apps form, routed according to value and department, recorded against the request, and shown in a simple management view. The process is easier to support because the data, documents and workflow history are all connected to the same Microsoft 365 environment.
For small and mid-sized businesses, this is often enough. Many legacy Nintex estates contain workflows that were built for a real operational problem but have since accumulated extra steps, duplicate notifications and exceptions that nobody can explain. Rebuilding is an opportunity to simplify the process rather than reproduce every historical decision.
When replacing Nintex with Power Automate needs caution
Nintex remains a mature platform, and some organisations use its depth for good reasons. Complex forms, sophisticated document generation, high-volume transactional workflows, extensive external-system integrations and heavily governed process portfolios may not translate neatly to standard Power Automate.
The first issue is complexity. Power Automate flows can become difficult to maintain when they contain many nested conditions, parallel approval paths, repeating loops and exception handling. They can still be built, but the design needs discipline. A process that has grown organically over several years may need to be redesigned into smaller, manageable components rather than copied action by action.
The second is licensing. Microsoft 365 licensing can make basic workflows highly cost-effective, but premium connectors, desktop automation, Dataverse capacity or advanced integration requirements can introduce additional costs. Those costs may still compare favourably with Nintex, but they should be established before a migration decision is made, not discovered when a flow reaches production.
The third is forms. Nintex Forms has been used widely to create structured, user-friendly interfaces over SharePoint and other systems. Power Apps can provide a strong alternative, especially for mobile-friendly forms and processes that need validation or conditional fields. It is not always a quick conversion, however. A form that appears simple to users may contain complicated rules, permissions and data lookups underneath.
Finally, consider process ownership. If a workflow is business-critical, its operational owner needs more than a working replacement. They need clear support arrangements, documentation, monitoring and a route for changes. Moving from Nintex to Power Automate without this is not modernisation. It is simply relocating risk.
Can Power Automate replace Nintex without rebuilding everything?
Usually, no. A direct conversion is the wrong expectation.
Nintex workflows and Power Automate flows use different design models, connectors, form technologies and approaches to permissions. Even where the business outcome is identical, the most sensible Microsoft 365 solution may look different. A Nintex workflow that relies on a single large form and complex workflow logic might become a SharePoint list, a Power Apps form, several focused flows and a Power BI report for oversight.
That is not necessarily more complicated for the business. Done properly, it can be clearer, easier to report on and easier to adapt. But it is redesign work, and it should be costed as such.
A practical migration starts with an inventory. Identify every active workflow and form, then record its purpose, users, systems involved, volume, process owner, business impact and known pain points. Usage data matters here. A workflow used twice a year may not justify a rebuild. One that runs 200 times a month and controls supplier payments deserves proper testing and contingency planning.
Once the inventory is complete, classify each item into one of four decisions:
- Retire it because the underlying process has changed or is no longer used.
- Simplify and rebuild it with SharePoint and standard Power Automate capabilities.
- Rebuild it using Power Automate, Power Apps and premium Microsoft services where there is a sound commercial case.
- Retain it in Nintex because the cost, risk or specialist capability makes migration poor value.
This assessment often reveals that the question is not whether to replace Nintex entirely. It is whether to reduce the Nintex footprint while moving routine processes into Microsoft 365. That can be a lower-risk route, particularly where a small number of advanced workflows still earn their place.
What a sensible migration plan looks like
Start with one or two workflows that are useful but not business-critical. Good candidates include internal requests, simple document approvals or notification processes currently managed by email. They allow the team to establish design standards, permissions, naming conventions and support arrangements before tackling finance, HR or compliance workflows.
Build the new process around the user journey, not the old workflow diagram. Ask where a request starts, what information is genuinely needed, who needs to act, what evidence must be retained and how users know the work is complete. Removing unnecessary fields and approval stages is often where the biggest time saving comes from.
Testing should cover more than the happy path. Test rejected requests, unavailable approvers, incomplete data, permission changes, duplicate submissions and failures in connected systems. Set up clear error notifications so an owner knows when intervention is required. For regulated or sensitive processes, retain appropriate audit records and involve the relevant business owner in acceptance testing.
Then run the old and new process in parallel where the risk warrants it. This is particularly valuable for workflows with financial consequences or external commitments. Parallel running has a cost, but it is usually cheaper than correcting a failed cutover after users have lost confidence.
The commercial decision: cost versus operational value
The comparison should not stop at subscription fees. Calculate the cost of maintaining the current Nintex environment, the effort to rebuild and test each workflow, any additional Microsoft licensing, and the ongoing support required after go-live. Then compare that with the time lost to manual handoffs, delayed decisions and poorly understood legacy processes.
Power Automate is often the better fit for organisations that want to standardise around Microsoft 365 and have a portfolio of practical internal workflows. It can make better use of existing SharePoint, Teams and Outlook investment while reducing reliance on a separate platform.
Nintex may remain the right answer where the organisation depends on advanced forms, complex automation at scale or capabilities that would require costly custom development elsewhere. There is no prize for removing a platform if the replacement is harder to manage or less reliable.
For many SMEs, the best next step is a short, evidence-based workflow assessment rather than a blanket migration commitment. ThePoint regularly helps organisations review Nintex, K2 and Microsoft 365 estates in this way: identify what can be retired, define what should be rebuilt, and put a realistic cost and delivery plan around the work.
The useful outcome is not a fashionable platform decision. It is a smaller, clearer set of processes that people can complete quickly, managers can oversee and your business can change without starting from scratch.