Tax and accounting professionals must interpret regulations, collect information, review documents and meet demanding compliance requirements. Much of this work involves structured but repetitive tasks, often spread across multiple systems. As workloads grow and firms face recruitment challenges, improving operational efficiency has become increasingly important.

Italian startup Rulen, previously known as LexSA, is developing an AI operating platform for tax and accounting professionals. Rather than functioning solely as a research assistant, the company aims to automate workflows from data collection through document preparation and review, while preserving professional oversight.

On 21 October 2026, Rulen announced its first funding round, raising €1.8 million. The investment was led by VC Partners, with participation from Growth Engine, AME Ventures, Zest through its Magic Mind vehicle, Alpha Venture and a group of industry business angels.

This article examines:

• Rulen’s approach to automating tax and accounting work.
• Its October 2026 funding round and investors.
• Its plans for product development and commercial expansion.
• What its funding journey shows other entrepreneurs.
• How Fundingtrip can help founders prepare for fundraising.

From tax research to complete workflows

Rulen was launched at the end of 2025 by Simone Hong and Claudio Cama. Its platform applies agentic AI to tax and accounting activities, with the aim of helping professionals manage work that would otherwise require repeated manual steps.

The company’s approach extends beyond answering questions about tax rules. It aims to connect information gathering, analysis, document production and review into coordinated workflows. By linking these activities, the platform seeks to reduce the need for professionals to move repeatedly between disconnected tools and manually coordinate each stage.

Rulen integrates with existing software and third-party systems, including the Italian Revenue Agency’s Cassetto Fiscale. This is an important part of the product’s positioning: professional firms generally need technology that fits into their established processes rather than requiring them to rebuild their entire working environment.

The platform is intended for tax and accounting professionals, as well as legal and tax advisory practices and larger organisations that manage complex compliance activities. Its focus is on automating operational tasks while retaining the professional’s ability to check and verify the work.

This balance matters in a field where accuracy, traceability and responsibility are essential. AI can support the execution of routine steps, but professional judgement remains important when interpreting rules, validating outputs and making decisions with legal or financial consequences.

October 2026: Rulen raises €1.8 million

On 21 October 2026, Rulen announced a €1.8 million equity funding round, its first publicly reported financing operation. VC Partners led the investment, joined by Growth Engine, AME Ventures, Zest through its Magic Mind vehicle, Alpha Venture and a group of business angels with industry experience.

The round coincided with the company’s rebranding from LexSA to Rulen. The new name reflects its shift towards a platform that translates tax rules into operational actions, rather than focusing primarily on AI-assisted research.

The company plans to direct the new capital towards two main priorities: product development and commercial expansion. It also expects to recruit approximately ten people by the end of 2026, strengthening areas including sales, marketing and product development.

These priorities are closely related. Developing more capable AI workflows requires ongoing technical work and input from tax specialists, while commercial expansion is needed to reach more firms and turn product usage into sustainable revenue.

The company’s domain-specific focus may be an advantage in this process. Tax and accounting work involves detailed rules, established procedures and sector-specific requirements. Building a product around those needs can help a startup differentiate itself from general-purpose AI tools, provided that the platform delivers reliable results and integrates effectively into customers’ workflows.

Why specialist AI matters for tax and accounting

Rulen is entering a market where professional firms face pressure to handle complex workloads efficiently. Tax compliance involves more than finding the correct rule: professionals must gather relevant information, interpret it in context, prepare documents and verify the outcome.

Automating connected steps could help firms reduce time spent on repetitive tasks and direct more attention towards advisory work, client relationships and complex cases. It may also allow firms to increase the amount of work they can handle without expanding their teams at the same rate.

Rulen’s focus on integration is particularly important. Connecting to existing systems can make automation more practical by reducing the need for professionals to transfer information manually between applications. The platform’s stated approach is to execute workflows while maintaining professional control and verifiability.

The challenge is to make automation dependable in a field where errors can have significant consequences. Professional users need to be able to verify outputs, understand the basis for actions and intervene when a case requires judgement. The ability to combine automation with appropriate human oversight will therefore be central to customer confidence.

Rulen’s next stage will involve developing the product, expanding its commercial reach and strengthening its team. The October funding round gives the company resources to pursue those priorities as it develops its position in the tax and accounting technology market.

What Rulen’s funding journey shows

• Build around a clearly defined professional problem. 

Rulen targets repetitive, complex workflows in tax and accounting rather than applying AI without a specific operational purpose.

• Develop a product that fits existing practices. 

Integrations with established systems can make adoption easier and reduce disruption for professional users.

• Differentiate through specialised knowledge. 

Industry-specific AI can be more relevant when it reflects the rules, documents and processes of a particular profession.

• Keep reliability and human oversight central. 

In tax-related applications, automation must support accuracy, verification and professional accountability.

• Use funding to develop both product and market. 

Rulen’s plans combine product development with commercial expansion and team growth, recognising that technical capability alone does not create a sustainable business.

• Make the company’s positioning clear. 

The transition from LexSA to Rulen accompanies a broader product ambition: moving from AI-assisted research towards the execution of connected workflows.

For entrepreneurs building vertical AI companies, Rulen’s experience highlights the value of understanding a profession’s day-to-day work. A convincing funding proposition needs to explain not only what the technology does, but why customers need it, how it fits into their existing processes and how it can deliver measurable value.

The company’s funding round also illustrates the importance of matching capital to a specific stage of development. For an early-stage startup, a first equity investment can provide the resources to refine its product, expand its team and test whether its commercial model can support sustained growth.

How Fundingtrip can help entrepreneurs

Rulen’s journey demonstrates how a clear market problem, a focused technology proposition and a defined growth plan can form the basis of a fundraising strategy. Fundingtrip helps entrepreneurs understand funding opportunities, prepare their businesses for investment and explore suitable financing routes. Through the Fundingtrip courses, founders can develop their fundraising knowledge and learn how to prepare for the next stage of their entrepreneurial journey.

About the author of this post

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Sara Gavidia
Content Creator
Communications Manager & Content creator
LinkedIn
[email protected]

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Hello! I’m Sara 👋🏻

I’m FundingTrip’s Content creator. I write posts about technology, funding and innovation. If you liked this one, subscribe to our newsletter to receive more updates!

Post reviewed by David Arias, funding expert.