Fintech Tallia raises £3m led by Outward VC with support from ICAEW
This article covers Tallia, a fintech startup, which has raised £3m in a seed funding round led by Outward VC. It aims to scale a specialist AI platform that supports tax advisers and professional services firms by reducing research time and producing traceable justification for advice.
Tallia has raised £3 million in a seed funding round led by Outward VC to scale a specialist AI platform that helps tax advisers research, draft and audit advice. The financing, which also includes investment from the Institute of Chartered Accountants in England and Wales (ICAEW) and a mix of venture and angel backers, matters because it targets a persistent productivity gap in tax practice where advisers spend hours on research and firms need verifiable audit trails for compliant advice.
Why it matters
UK tax complexity has ballooned in recent decades, and firms routinely bill at partner rates that make research time expensive. Tallia’s product is positioned at the intersection of tax practice and applied AI: it aims to reduce repetitive research time, provide traceable justification for advice and speed delivery of client documents. That combination is especially relevant as firms weigh the trade-offs between general-purpose AI models and domain-specific systems that must meet regulatory and professional standards.
Tallia says teams using the platform save over five hours per fee earner each week. The company also notes that general-purpose models still struggle with Chartered Tax Adviser exam content and cannot provide the audit trail tax work requires — claims underscored by an internal comparison where GPT-5 scored 48% on a CTA Advanced Technical question versus 93% with Tallia’s approach.
Inside the product
Tallia’s platform covers the lifecycle from a client’s first question to a finished deliverable. It connects research, drafting, review and export into a firm’s branded documents and integrates with Microsoft Word, Excel, PowerPoint and Outlook. Central to the product is a knowledge graph that maps legislation, reliefs, guidance and precedent, enabling the AI model to reason over connected context rather than isolated text snippets. The platform traces every claim to legislation, HMRC guidance or case law, producing an audit trail that firms can rely on for compliance and internal review.
A Budget Desk feature pulls answers straight from GOV.UK documents, designed to support firms during fiscal events such as the Autumn Budget.
Who are the investors?
The £3 million seed round was led by Outward VC. The Institute of Chartered Accountants in England and Wales (ICAEW) invested alongside Outward, with participation from Portfolio Ventures, Expedite Capital, entrepreneur investors Paul Forster and Angus Miln, and a group of angel investors from the tax, legal and technology sectors.
ICAEW’s investment is notable: it is the institute’s first direct investment in an AI company, reflecting a move by a large professional membership body to engage more directly with technology vendors. ICAEW — founded by Royal Charter in 1880 and representing more than 211,000 members and students across 150 countries — has chosen Tallia as a partner to evaluate and deploy AI for the profession and plans to develop a product with the company.
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Founder perspective
Tallia was founded in 2025 by Jack Mander and Alexander Bartlam, who met as teenagers on an Army scholarship. Mander is a Chartered Accountant and Chartered Tax Adviser who spent five years working in tax at PwC and Deloitte. Bartlam served in the Army, rising to the rank of Captain and acting as a Royal Signals Technology Lead. The founders say they are hiring engineers and commercial leaders and plan to add more jurisdictions and deeper workflows to the product.
The bigger picture
Tallia sits within a broader wave of specialised AI tools targeting professional services, where accuracy, provenance and sector expertise are as important as raw generative capability. Its client list already includes Alvarez & Marsal, Cooper Parry, Unity Advisory and Ostberg Sinclair & Co, showing early traction among advisory firms. For fintech startups and professional service technology providers, the deal highlights investor interest in domain-specific AI that can deliver verifiable outputs and integrate with existing office software.
The round also reflects how professional bodies and investors are becoming more active in shaping AI deployments for regulated sectors, a trend likely to influence how UK firms adopt and vet AI tools going forward.
This funding round reinforces a wider shift across the UK and Europe: investors and institutions are increasingly backing targeted AI solutions that promise both efficiency gains and the documentation auditors and regulators require.
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