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The story of Finstack

"No more month-end close, ever again".

Karel and Sebastiaan at a conference.

The same challenge.
A new solution.

Yesterday

How it started

Finstack was born when our founder, a CFO at a fast-growing software company, hit the limits of existing finance tools. Consolidations took days, forecasts were outdated the moment they were built, and strategic answers came too late. The tools on the market didn’t help - they came with long implementation projects, lacked the power to handle complex use cases, or were simply too clunky to use. Instead of accepting the status quo, he built the solution he wished he had: powerful, fast and intuitive.

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Today

Where we are today

Today, Finstack empowers CFOs and finance teams across Europe to consolidate and forecast in real time. Our platform replaces days of manual closing with automated, always up-to-date numbers - easy to set up, intuitive to use, and powerful enough to handle complex group structures.

Tomorrow

Where we are going

We’re on a mission to eliminate the month-end close for one million finance teams in Europe. Finance will move from rear-view mirror to future prediction - real-time, automated, and predictive. We are building the new standard for finance in the European mid-market, giving teams the insights and confidence to shape the future of their business.

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Building the standard for one million finance teams across Europe.

What started from a dream to make life easier for finance teams has grown into Finstack over the years. In the early days, it began as a small team working hand in hand with finance professionals. By listening closely, we uncovered the real pain points. The hours lost in spreadsheets, the struggle to turn data into decisions. That collaboration shaped the product into what it is today. Now, Finstack has grown into a trusted partner for hundreds of companies, turning complexity into clarity.

Today, Finstack empowers finance teams across Europe to consolidate and forecast in real time. Our platform replaces days of manual closing with automated, always up-to-date numbers. Our software is easy to set up, intuitive to use, and powerful enough to handle complex group structures.

We’re on a mission to eliminate the month-end close for one million finance teams across Europe. Finance will move from chasing the past to always being one step ahead. We are building the new standard for finance in the European mid-market, giving teams insights and confidence to shape the future of their business.

Karel and Sebastiaan portrait.

A quick pause to reflect.
Some highlights.

500+ customers

From international PE-backed companies to startups.

20 team members

United in our mission to eliminate the month-end close.

Founder-backed

Investors who’ve built companies themselves.

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The right tool didn't exist.
"So let's build it."

A portrait of Karel.

In my own words.

“As a former CFO, I know from first-hand experience how frustrating the consolidation and forecasting process can be. I spent countless of hours updating spreadsheets instead of focusing on what was actually important to both me and the stakeholders, the of guiding strategy.

With Finstack, we want to bring change to over 1 million finance teams across Europe: no more month-end close, ever again. Live numbers, both historic and forward-looking, available at a single click. That’s what enables finance teams to move from sheer number-crunching to steering the company’s course.

Back then, I couldn’t find the tool I needed - powerful enough to solve complex problems, yet easy to use. So we built it ourselves. Our mission is clear: to empower finance teams with software that automates the month-end close, so they can spend time on driving business decisions.”

Karel Gonzalez Hulshof

Founder

Leadership team

A portrait of our founder Sebastiaan

Sebastiaan Hoekstra

Co-Founder
A portrait of Karel.

Karel Gonzalez Hulshof

Founder
A portrait of David

David Soos

Revenue

Experienced team.
World-class investors.

Finstack is backed by renowned investors and operators

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We could say more.
But our customers say it better.

Read why users love Finstack

“Finstack transformed how we run our buy-and-build strategy.

From day one, it gave us real-time insights into the performance of every clinic across the group, enabling faster integration, better decisions, and the ability to share reliable reports with our investors.”

Reinier Luitingh
CFO, Prime Care Clinics
Read case study
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A photo of our customer Reinier

"We found the perfect reporting platform, which is flexible and supports cross-group collaboration.

Finstack is easy to use, has shortened the reporting cycle and has reduced costs. Most important, it supports data-driven decisions and accountability by business owners.”

A portrait of Rudolf Maas Geesteranus
Rudolf Maas Geesteranus
Fractional CFO, Greyt

“Finstack is a great combination of reporting and interactive visuals that significantly speeds up our month-end process.”

A portrait of Tamaryn Dos Santos.
Tamaryn Dos Santos
Head of Finance, OpenUp

Want to know more?
Get in touch.

We're happy to help

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Frequently asked questions.

Haven't found your answer? Let us know

How quickly can I get set up and start using Finstack after signing up?

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You can be up and running within 1 day. Connect your ERP, map your chart of accounts, and begin with automated consolidation, eliminations, and reporting. No heavy setup required.

Does Finstack support multi-entity / group consolidation?

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Yes. Finstack handles consolidations across multiple entities, including intercompany eliminations, minority/non-controlling interest, and sub-group reporting. You can consolidate per group, region or business unit, with full visibility of eliminations and adjustments.

How does Finstack handle multi-currency and FX rates?

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Finstack uses accounting-compliant FX rates. You can convert any currency to your reporting currency automatically, fix historical rates for consistency, or enter your own rates. All FX adjustments are preserved for past reports.

Can I still use my existing spreadsheet models with Finstack?

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Absolutely. Finstack supports two-way spreadsheet integration. You can continue working in the spreadsheet environment you know, import or start from templates, and have them synced with your data, forecasts, and KPIs.

How real-time are the reports and dashboards?

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Very. Financial statements (P&L, Balance Sheet, Cash Flow) and KPI / performance dashboards are updated in real time with actuals. You can filter by entity, cost center, business unit, or custom dimension, compare versions, and track variances live.

What kind of adjustments and manual edits can I make?

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You can make manual journal entries, one-off adjustments, revenue recognition before invoicing or cost capitalisation, or other custom adjustments without messing with your ERP. Finstack tracks everything and keeps reports audit-ready.

How secure is my data with Finstack?

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Security is a top priority. We use encryption (in transit and at rest), role-based access controls, secure hosting, and adhere to industry best practices to protect your data. Plus, version control ensures data integrity over time.

What happens if my company structure changes or I add/remove entities?

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Finstack is flexible. You can add or remove entities, adjust ownership percentages, modify group or sub-group setups, and your consolidation & reporting structure will adjust accordingly. All changes are reflected across financial statements.

Is there a trial? What are the pricing plans?

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Yes, there is a free trial for 14 days (no credit card required) so you can explore all features. After that, we offer different plans depending on the number of entities & add-ons. Have a look at our pricing page our for details.