Damaris D.
DD
Damaris D.
Mid-Market (51-1000 emp.)
"AVP, Engineering"
4/5
What do you like best about OneStream - Unified EPM?

I love OneStream - Unified EPM because it helps collate and organize the data, making our conversations with stakeholders productive. The forecasts and tracks of our financial data improve our workflow. I particularly like the dashboard and the ability to track changes made, which aids in maintaining quality control. We have an excellent service onboarding team that made the initial setup smooth. Review collected by and hosted on G2.com.

What do you dislike about OneStream - Unified EPM?

Limited capabilities on prem. It would be nice to see more carried over from SaaS. Review collected by and hosted on G2.com.

Tahir H.
TH
Tahir H.
OneStream Administrator
Enterprise (> 1000 emp.)
"OneStream Review"
5/5
What do you like best about OneStream - Unified EPM?

We are moving to V9 which has a host of new features, some interesting ones like Genesis (Self Serve Dashboard builder), narrative reporting and performance enhancements. All in all looks great! Review collected by and hosted on G2.com.

What do you dislike about OneStream - Unified EPM?

Make more of the coding drag and drop style Review collected by and hosted on G2.com.

Tahir H.
TH
Tahir H.
Principle Product Manager - OneStream
Enterprise (> 1000 emp.)
"OneStream Review 2025"
5/5
What do you like best about OneStream - Unified EPM?

OneStream is an extremley versitile platform that allows complete flexibility in managing Actuals, Forecast, Budget across different cubes. The extensibility is a very powerful feature both for collating data but also for performance in consolidating the data. Review collected by and hosted on G2.com.

What do you dislike about OneStream - Unified EPM?

It would be great to have API integration to manage security using an external tool. Review collected by and hosted on G2.com.

Mark M.
MM
Mark M.
OneStream Architect
Enterprise (> 1000 emp.)
"Onestream unified platform with a single source of Truth"
5/5
What do you like best about OneStream - Unified EPM?

upside above hfm is that it is a unified platform, and everything is in one place, there is one source of truth. Review collected by and hosted on G2.com.

What do you dislike about OneStream - Unified EPM?

The coding is more difficult than hfm, so it helps to have new tools that are making it easier and faster top develop such as Genesis Review collected by and hosted on G2.com.

PD
Primus D.
Head of FP&A
Enterprise (> 1000 emp.)
"Great Consolidation and Analytical Tool"
5/5
What do you like best about OneStream - Unified EPM?

Its a great consolidation and analytical tool Review collected by and hosted on G2.com.

What do you dislike about OneStream - Unified EPM?

its integration needs to be more user friendly to new users maybe a little more AI support and also faster cube updates Review collected by and hosted on G2.com.

Devanand P.
DP
Devanand P.
Quality Control Engineer
Mid-Market (51-1000 emp.)
"OneStream: Powerful Unified Finance Platform, But Pricey and Complex"
5/5
What do you like best about OneStream - Unified EPM?

What I like best is that it's a truly unified platform. It sounds like marketing jargon, but it genuinely solves the biggest headache in corporate finance.

In the past, we had separate software for Consolidation, another system for Budgeting/Forecasting (FP&A), and then we'd pull it all into Excel for final Reporting. That meant spending countless hours:

Reconciling Data: Trying to figure out why the numbers in the planning system didn't match the numbers in the consolidation system.

Maintaining Integrations: Relying on IT to build and maintain brittle data links between three different software vendors.

With OneStream, the data for our actuals (Close & Consolidation) and our budget/forecast all sit in one place. You have a single set of rules and a single data model.

This gives us complete confidence in our numbers and allows us to spend 90% of our time on analysis and strategy, instead of 90% of our time on data wrangling and reconciliation. That shift in focus is invaluable. Review collected by and hosted on G2.com.

What do you dislike about OneStream - Unified EPM?

If I had to switch hats and give you the perspective of a user who has gone through an implementation and is now using it day-to-day, the common dislikes usually fall into three main buckets: Cost, Complexity, and Culture.

Here’s my take:

1. The Cost: It's an Investment, and It's Expensive.

"Look, I get that it replaces four other systems and gives us amazing data quality, but there’s no getting around it: OneStream is premium software with a premium price tag.

Initial Outlay: The licensing and implementation costs are significant. It’s not a solution for small-to-mid-size companies unless they have extremely complex financial requirements. You need to be ready to commit significant budget.

The 'Tax': Because the system is so powerful and flexible, you often need to rely on highly-skilled, and therefore expensive, consultants or in-house experts for the heavy lifting, especially with initial design and complex business rule changes.

2. The Complexity & Learning Curve: Powerful, but not Simple

"The thing I loved about it—its ability to do everything—is also what makes it a beast to master. It’s not like turning on a lightweight cloud app.

Steep Learning Curve: For a new administrator or a new financial analyst who didn't come from a legacy CPM system (like Hyperion), the complexity can be overwhelming at first. You need dedicated training and time to become proficient.

It Requires a 'Developer Mindset': While the front-end user experience is good for data entry and reporting, making major changes to the system logic, building highly customized reports, or managing the Extensible Dimensionality feature often feels like an IT development project. It’s not always a completely 'business user self-service' tool in the way some simpler planning apps are marketed.

3. The User Interface (UI): Functional, Not Fashionable

"Honestly, the application is incredibly functional, but if you compare it side-by-side with some of the newer, consumer-grade cloud apps, it can feel a bit... plain.

A Bit Dated: It can sometimes lack the sleek, modern aesthetic and intuitive 'drag-and-drop' feel that some users are now accustomed to from other cloud tools. It's built by finance people, for finance problems, and the focus is clearly on the robust functionality behind the scenes, not necessarily the visual sizzle."

In short, it's a Formula 1 race car: incredibly powerful, capable of world-class performance, but it costs a lot to buy, and you need a specialized, highly-trained pit crew to run it. Review collected by and hosted on G2.com.

DA
Dorinda A.
Small-Business (50 or fewer emp.)
"Automates and Compiles Stakeholder Inputs Effortlessly"
5/5
What do you like best about OneStream - Unified EPM?

The platform automates and compiles inputs from stakeholders Review collected by and hosted on G2.com.

What do you dislike about OneStream - Unified EPM?

At this point, I have not identified any dislikes. Review collected by and hosted on G2.com.

Mila S.
MS
Mila S.
Financial Analyst
Mid-Market (51-1000 emp.)
"OneStream - Streamlining Accounting Processes to Success"
4/5
What do you like best about OneStream - Unified EPM?

OneStream has given us the ability to simply our month end accounting processes. Specifically with accounting reconciliations, we now have the ability to streamline our reconciliation process with pre-made templates, while being able to attach our own internal documents as backup where needed. OneStream has given us the ability to review account recs form a high-level perspective - we can review what is outstanding, what has been changed, and where reconciliations are in the approval process. It has been a great tool for month end planning. Review collected by and hosted on G2.com.

What do you dislike about OneStream - Unified EPM?

The initial parallel integration was slower than expected. There were some difficulties with training and proper reconciliation prep, but with virtual learning sessions we were able to overcome the initial growing pains. The customer support made this process significantly easier. Review collected by and hosted on G2.com.

Minhhieu N.
MN
Minhhieu N.
Transformation Lead, Consolidations & Reporting
Enterprise (> 1000 emp.)
"Powerful Insights from Unified Data Platform"
4.5/5
What do you like best about OneStream - Unified EPM?

There is so much you can do when all the data is stored on one platform, when stringing together several separate loads to draw correlations and insights. It just intrinsically makes sense. Review collected by and hosted on G2.com.

What do you dislike about OneStream - Unified EPM?

I think there are some things where you may need a bit of a developer mindset to execute, but its been continually improving with the new tools and resources given, like genesis to help build dashboarding for someone like me in finance, decreases barriers to develop. Review collected by and hosted on G2.com.

Andrey M.
AM
Andrey M.
Senior Financial Controller
Enterprise (> 1000 emp.)
"Great experience so far"
5/5
What do you like best about OneStream - Unified EPM?

That I can combine stage data, cube data and metadata - full y flexible and opened to building solutions! Review collected by and hosted on G2.com.

What do you dislike about OneStream - Unified EPM?

UI is a a bit wooden and hard to make it fancy.

Web client is not 100% replacement of win app and no mac app. Review collected by and hosted on G2.com.