Knowledge and grounding

Finn doesn't learn tax from the open web. Her knowledge is curated, her sources are official, and her maths is done by code.

Trusted sources only

When Finn answers a tax or rules question, the answer is grounded in official sources (HMRC and GOV.UK in the UK, and the tax office and company registry in each country) and she shows you where it came from. If she can't ground an answer, she says so.

Country playbooks

Finn carries 138 playbooks covering tax, VAT and sales tax, payroll and company rules across 27 countries. Only your country's playbooks are loaded for your company.

A verified rules library

Tax and accounting rules are kept as checked, versioned facts per country (rates, thresholds, allowances, deadlines), not as something the model remembers from training.

Live government lookups

• Official guidance search on GOV.UK
• HMRC's VAT register, to check any UK VAT number
• Your own HMRC record: what HMRC expects, what you owe, what they've received
• Companies House and the Irish company registry, for company details and filing history

The Casebook

Knowing the rules is one thing. Knowing what experienced accountants actually do is another. Finn's Casebook holds practitioner plays (salary and dividends, year-end timing, capital allowances, R&D and more), matched to your country, your type of business and your industry. At month-end, Finn picks out the few that fit you right now.

A rules engine for the money

The AI decides what something is and explains it. Code does the maths. VAT boxes, tax figures, ledger postings and currency conversion are calculated exactly, every time, and never generated by the model.

The ledger is the truth

Every figure Finn gives you comes from a double-entry general ledger. Reports, returns and answers in chat all read from the same place, so they always agree.