Research, free tools and answers.
Reports on how AI handles UK tax, a guide to licensing company data, and free tools you can use right now.
Research you can use.
How AI handles UK tax rules
Which models get MTD right, which rules trip them up and what it costs. First edition winter 2026: summary free, full report £495.
Selling company data to AI
Prices by company size, who's buying, and the UK GDPR checklist to follow before anything leaves your systems.
Use them now, no sign-up.
Practice app
40 realistic clients, line drills and full quarterly returns with instant marking.
Open the appData valuation
Nine questions for an indicative range and next steps.
Value your dataError calculator
What an average AI profit error adds up to at scale.
Try itBenchmark methodology
How tasks are built, the tax rules and how marking works.
Read itSelling your data
Is licensing company data legal under UK GDPR?
It can be, with the right steps: a lawful basis, de-identification before anything leaves your systems, a data protection impact assessment and a re-identification test. We build all of that in. Review each deal with your own lawyer.
Do you see my data?
No. Records stay in your environment and are de-identified there. We never hold raw data, and buyers never get live access.
Is the valuation a guaranteed price?
No. The estimate is an indicative range from our model, based on public, mostly self-reported deal figures. It isn't a buyer quote. A readiness review gives a firm estimate, and the final price depends on the offers you receive.
What if my data isn't licensable?
The estimate says so plainly and names the blocker to fix first. Common blockers are under 25 staff, under 2 years of records, a single system, or restrictive client contracts.
Will my staff's private messages be included?
No. Direct messages, HR and health threads are excluded by default, and anyone can object to inclusion.
Can AI models memorise names?
They can, which is why names are replaced before anything leaves, not afterwards.
Should I give a buyer exclusivity?
Not for more than 30 to 45 days. Non-exclusive licences let you sell the same copy to the next buyer.
AI testing
What is an AI training environment?
A simulated workplace where an AI practises a task many times and is scored on each attempt. Ours covers UK bookkeeping and tax for sole traders.
What does the AI actually have to do?
Read a fictional sole trader's bank statement, receipts, invoices and client notes, then produce the HMRC Making Tax Digital cumulative quarterly update as JSON. We compare every box with the answer key.
Can we pay to rank higher on the leaderboard?
No. A verified run pays for testing under exam conditions. The score is whatever the model earns, published either way.
Who checks the tax rules?
Every answer comes from our rules engine, which follows published HMRC guidance for 2026-27 on the cash basis. We are arranging an independent review by a qualified UK accountant. If you spot an error, tell us and we'll correct it.
Do the tasks contain real people's data?
No. Every client, transaction and message is synthetic, so there's nothing to anonymise.
Is any of this tax advice?
No. Our tasks are training and evaluation data, not advice.