Berlin Fintech Integral Raises €18 Million Series A for AI-Native Accounting Platform

Berlin-based fintech Integral has raised €18 million in a Series A co-led by Mosaic Ventures and Reid Hoffman, with existing investors Cherry Ventures, General Catalyst and Puzzle Ventures participating again. Integral says the round lifts its total funding to more than €30 million less than two years after the company began building its accounting, tax and payroll business.

The financing is aimed at a model that goes beyond selling software to accountants. Integral develops AI agents for bookkeeping, payroll and tax work, while an affiliated licensed German professional-services firm, Integral Tax GmbH Wirtschaftsprüfungsgesellschaft, reviews and signs work that requires professional responsibility. The company is starting with small and medium-sized businesses in Germany.

In its Series A announcement, Integral said the new capital will be used to deepen automation across client onboarding, bookkeeping, payroll runs and tax filings, while expanding hiring across AI engineering, licensed professionals and commercial teams. The company also said it plans to advance its compliance technology for regulated financial work.

Integral is building the service, not just the software

Integral’s pitch is that AI should perform more of the repetitive production work while licensed professionals retain control over the final output. Its agents reconcile invoices and bank transactions, prepare account postings, assemble payroll runs and prepare tax filings. According to the company, corrections and overrides made by professionals are fed back into the platform so that the automation can improve across future cases.

That design is important because the product is tied directly to a regulated service. Integral Tax, which Integral describes as an independent licensed firm affiliated with the group, operates on the platform and serves businesses in Germany. Licensed professionals remain responsible for reviewing and signing filings rather than handing final legal accountability to an automated system.

Integral is also using operating metrics to argue that the approach is improving capacity. The company says professionals at Integral Tax have doubled the number of clients each can serve since the start of 2026. It also says its agents now prepare books end to end for more than half of clients and that average monthly accounting turnaround for many clients has fallen from weeks to hours. Those figures come from Integral and have not been independently audited in the material reviewed by MarketReview.

The Series A gives Integral more money to test whether those gains can hold as the work becomes more complicated. The company says it wants to extend automation into accounting, tax and payroll cases that still demand substantial professional time. Hiring is part of that plan because the operating model depends on software engineers and licensed specialists working together, rather than treating the professional review layer as an external add-on.

Funding lands amid a capacity squeeze in German tax work

Integral is building into a profession with an aging workforce and a limited pipeline of younger entrants. The latest professional statistics from Germany’s Federal Chamber of Tax Advisers show 90,336 tax advisers and authorized tax agents as of January 1, 2026, with an average age of 53.7. About 13.7% were older than 70, while only 2.6% were younger than 30.

The same report counted 17,081 registered training relationships for tax clerks at the start of 2026, down 1.3% from a year earlier. Those figures do not by themselves prove that every accounting or tax practice faces the same staffing problem, but they show the demographic pressure behind efforts to increase how much work qualified professionals can supervise.

Germany’s Federal Employment Agency separately classified tax advisory, auditing, bookkeeping and insurance among expert-level occupations showing signs of skilled-worker shortages in its 2025 analysis. Integral is positioning automation as a response to that constraint, but its model is not based on removing professionals from regulated decisions. The company’s stated approach is to automate preparation work and keep licensed people responsible for judgment, review and sign-off.

That distinction also shapes the financial case for the company. A software vendor can increase revenue by selling more licenses, but an AI-enabled professional-services business has to prove that automation can raise service capacity without weakening accuracy or accountability. Integral’s own productivity claims suggest the model can reduce time spent on routine work. The harder test will be whether those economics remain attractive as the firm handles more clients and more complex cases.

The Series A follows earlier funding and a payroll acquisition

Integral’s latest round follows a €6.3 million financing announced in February 2025, when General Catalyst and Cherry Ventures led an earlier raise with participation from Puzzle Ventures and European entrepreneurs. At that stage, Integral described its goal as allowing SMEs to outsource accounting, tax and payroll work through a platform that combined automation with professional expertise.

In November 2025, Integral also announced the acquisition of cleverlohn, a German digital payroll and HR provider, together with additional funding whose amount was not disclosed in the announcement. Integral said cleverlohn would continue to operate as a separate brand and company while gaining access to Integral’s AI technology. That acquisition expanded the group’s exposure to payroll before the current Series A.

Integral’s newsroom now says the group serves more than 800 SMEs. The company was founded by Lukas Zörner and Anil Can Baykal and traces its beginnings to work in Berlin in 2024. Its current strategy is broader than a single accounting application: the group is trying to own both the technology layer and the service delivery model for bookkeeping, tax and payroll.

The new investors are backing that structure at a point when venture funding for AI companies is increasingly moving beyond general-purpose models and into industry-specific workflows. For Integral, the immediate milestones are more concrete than that wider trend. The company says it will use the Series A to hire, automate more complex work and extend the technology used by its licensed practice. It has not announced a timetable for entering additional countries or a valuation for the funding round.