Sumary raises $25M seed to extend AI accounting platform from the Nordics into the UK and Benelux

Sumary (Copenhagen) has raised $25 million (€22.5M) in a seed round to accelerate its AI accounting platform beyond the Nordic market. The round was led by Singular, with existing investors byFounders, Partech and Tenity reinvesting alongside angel investors including Steve Anavi, Tuomas Artman, Stanislas Polu, Steffen Tjerrild, Jannick Malling and Ben Freeman. Total raised since founding reaches $29.2 million.

What the platform does

Accounting firms spend a disproportionate share of their time on work that is structured but non-trivial: matching transactions, chasing missing receipts, preparing VAT returns, running the monthly close. Sumary's platform handles the mechanical steps — running the matching, flagging anomalies, drafting returns — and surfaces only the decisions that require a qualified accountant's judgment. The result is a workflow where the accountant reviews and approves rather than executes and checks, compressing the time it takes to close a client's books.

The model targets the accounting firm as the unit of deployment rather than the SMB directly — a B2B2B go-to-market that has allowed Sumary to build density with a small number of large firm relationships. The company says it works with most of the 20 largest accounting firms in the Nordics, though it has not published evidence for that figure. A $4.2M pre-seed in November 2025, led by byFounders with Partech and Tenity participating, funded the Nordic build-out; one year later the seed is eight times the size, suggesting the firm-channel bet held up.

From Copenhagen to London and beyond

The $25M funds a geographic expansion led by London. Two of Sumary's five founders — all described as former McKinsey consultants — are relocating there to anchor the commercial operation, while the technology and AI research team stays in Copenhagen. After the UK, the Benelux region is the next target: the Netherlands and Belgium together have a large installed base of mid-sized accounting firms that have not yet made a full switch to AI-native workflows.

The investor composition points to the European ambition. Singular, though Paris-based, writes conviction-sized early checks into AI-native vertical software and has backed companies scaling across multiple European markets. Angel investors Stanislas Polu and Tuomas Artman bring technical credibility in AI infrastructure and production deployment.

Why it matters

Sumary has found product-market fit in the Nordics — a relatively homogeneous market with modern banking infrastructure and high accounting digitalisation. The question is whether the platform can extend without hitting the wall of divergent tax rules, ERP integrations and language-specific workflows that have tripped up pan-European fintech expansions before. UK accountants work under different statutory frameworks than Danish ones; Benelux adds Dutch, French and bilingual complexity on top. Singular's conviction check is the strongest available signal: the fund has the European network to validate demand outside the Nordics. The 18-month test is whether Sumary can close large firm contracts in London and Amsterdam at a clip that justifies the valuation behind a claimed-largest accounting seed round.