Kosmo Labs Open Taxmate

AI-native financial software for Southeast Europe.

We build the accounting, tax and admin software that small businesses in the region actually need — several products on one shared platform, with an in-house tax authority making sure every figure comes out right.

Founded 2025 Based in Bulgaria Backed by Bifrost Studios
Platform Products Reach Shared platform document intelligence registry data agent operations Bulgarian tax rules, authored once Taxmate accounting & tax Find Accountant matching Gishe.bg admin front door Self-serve Accountants Partners

The region is being forced off paper, and nobody owns the category yet.

Roughly 2.7 million small and medium businesses across Southeast Europe still keep their finances on paper. Compliance mandates land through 2027.

Forced digitisation

Compliance mandates through 2027 are moving every SME in the region off paper, ready or not.

Collapsed build costs

AI-native development lets a small team ship localized, full-depth software in months, not years.

No incumbents

The region skipped the last software generation. The category leaders are being decided now.

One platform underneath every product.

The hard part of financial software here isn't the interface — it's being correct about Bulgarian tax and reporting rules. We author that once, and every product inherits it.

Platform

Shared AI infrastructure: document intelligence, registry data and agent operations. Built once, used by every product.

Products

Taxmate, Find Accountant and Gishe.bg. Each one meets a business at a different moment, and each one benefits from what the others already know.

Reach

Self-serve, the accountant channel, and partners who already hold the relationship with the business.

Purpose-built for this problem.

A founding team out of Danish fintech, a commercial co-founder who has already sold e-invoicing into this market, and an in-house tax authority.

Tsvetomir Batinov

Co-founder & CEO

One of the first five people at Danish fintech Risika and team lead for its platform as it scaled. Brought that playbook home to Bulgaria and founded the company. Built Taxmate's platform together with Shtono. Leads product.

Shtono Kuzmanov

Founding Engineer

A full-stack engineer, meticulous to the last detail, who ships systems that hold up. Shipped fintech alongside Tsvetomir before Taxmate. Owns the platform's technical execution end to end.

Evgenii Chernozemsky

Co-founder & CCO

More than ten years in commercial roles. Led the Bulgarian launch of Banqup (Unifiedpost), a European e-invoicing platform, and sold it into the country's accountants. Owns go-to-market and the accountant channel.

Yordan Kostadinov

Head of Tax & Accounting

The in-house authority on Bulgarian tax law. Seven-plus years in accounting and audit, from multinationals to solo freelancers. MSc in Accounting and Financial Control, PhD in progress. He is why every figure Taxmate produces is correct.