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Personio buys Circula in its largest deal yet, 2026

Personio, the German HR unicorn, acquired the spend-management platform Circula.

AcquisitionsNOTABLE4 min read
Personio buys Circula in its largest deal yet, 2026

Personio has acquired Berlin spend-management platform Circula, adding expenses, corporate cards and benefits to its HR and payroll suite; the price was not disclosed.

Key Takeaways

  • Personio announced the Circula acquisition on October 6, 2026; the company calls it its largest deal to date.
  • Circula serves 3,000+ European firms and 250,000 users; its last round was a €15M Series A extension in 2025.
  • Price is undisclosed; a German business magazine estimates a low three-digit million euro sum.

Lead

Personio, the Munich-based HR and payroll software group, announced on October 6, 2026 that it has acquired Circula, a Berlin spend-management company founded in 2017. Neither side disclosed financial terms. Personio describes the transaction as the biggest acquisition in its history. Circula will continue as "Circula by Personio" and stay on sale as a standalone product for companies that do not use Personio.

What Did Personio Actually Buy?

Personio bought a mid-market expense and card business with a footprint of 3,000 European companies and about 250,000 users. Circula covers expense reports, corporate cards and tax-optimised employee benefits, and it integrates with DATEV, the accounting software that German tax advisers rely on. Customers have included Aston Martin, About You, DATEV and Securitas.

Personio itself reports more than 16,000 customers employing 1.6 million people. The two products have been connected for six years, and several hundred shared customers already sync employee master data between them. This is a buy of an integrated partner, not an acquihire: Circula brings a revenue-generating product, a customer base and its own engineering team.

How Much Did Personio Pay?

The price is unknown, and estimates vary widely. WirtschaftsWoche put the figure in the low three-digit millions of euros. Its own revenue estimate, assuming €3,000 to €4,500 in annual contract value per customer, implies annual recurring revenue of roughly €9 million to €13.5 million.

That arithmetic is thin. At a standard software multiple, the same revenue yields only €41 million to €81 million, well below a three-digit figure. A price above that range would mean Personio is paying for strategic fit and integration depth rather than current revenue. The magazine also estimated Circula's valuation at €75 million to €100 million at the time of its 2025 round, assuming the investors took 15% to 20% of the company.

What Did Circula's Funding History Look Like?

Circula raised a €15 million Series A extension in May 2025, led by existing investors including Alstin Capital and Capnamic Ventures, with Peak Capital, Storm Ventures and CIBC Innovation Banking also participating. The money was earmarked for AI-driven expense automation and for serving larger international customers.

An exit about 17 months later suggests the standalone route was harder than the round implied. Spend management is crowded. Fintechs such as Moss and Pleo, and accounting suites, all compete for the same finance budgets. A buyer with an existing distribution channel of 16,000 customers is a more predictable path than scaling card issuing alone.

Why Does Personio Want Spend Management?

Personio wants to own more of the money that flows through a company's people operations, beyond salaries. CEO and co-founder Hanno Renner has said spend management is among the capabilities customers request most often, and the company frames the deal as bringing payroll, expenses and benefits into one system. Circula co-founder and CEO Nikolai Skatchkov said HR, spend and now payroll are designed to work as one.

The commercial logic is plain. HR software is a per-employee subscription business, and payments and card interchange add revenue that does not depend on headcount growth. Personio has also been through cost cutting, with two rounds of layoffs in 2024 and a further reduction of about 10% in October 2025, according to WirtschaftsWoche. The same report says the company crossed the profitability threshold in April 2026. Buying growth after reaching profit is a different position from buying it while burning cash.

What Are the Risks?

Integration is the main risk. Circula's product also sells to companies that run other HR systems, and keeping it available as a standalone service limits how tightly Personio can bind the two. Customers on rival HR platforms may hesitate to buy from a competitor's subsidiary. Personio last raised at a reported $6.3 billion valuation in a $270 million Series E in 2021, so a deal of this size is meaningful but small relative to its private-market value.

Outlook

Personio now offers payroll, HR data, expenses, cards and benefits in a single European platform, with Circula's DATEV connections as a distribution advantage in Germany. The next signals will be whether it discloses Circula's revenue contribution, how quickly cards reach its existing 16,000 customers, and whether more acquisitions in finance follow. The undisclosed price leaves the question of what Circula's 2025 investors earned open.

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