UK Accounting Answers. Simplified.
Cited answers from HMRC manuals, legislation, case law, and official guidance — in seconds, not hours.
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Generic AI creates liability, not clarity
ChatGPT and similar tools generate confident answers with no verifiable sources
Answers you can't stand behind
No connection to authoritative sources. Answers may be plausible but legally incorrect.
Try citing a ChatGPT response to a client
Citations are vague, incomplete, or entirely fabricated — impossible to verify.
Fabricated authorities — now a profession-wide problem
Early tribunal cases — Harber, Zzaman, Gunnarsson — involved self-representing taxpayers. The profession could once distance itself from that.
In June 2025 that changed. The High Court handed down a combined judgement in Ayinde v London Borough of Haringey and Al-Haroun v Qatar National Bank [2025] EWHC 1383. In Ayinde, a barrister had cited five fake cases. In Al-Haroun, a solicitor submitted 45 citations in support of an £89 million claim — 18 did not exist.
Unusable for professional advice
Cannot be used for professional advice, compliance, or audit defence.
As a practising accountant, I've found Fiscari genuinely useful — particularly for more complex tax planning areas like group relief where the HMRC guidance isn't always easy to navigate. The answers are clearly structured and backed by real citations I can check. It's the kind of support you'd normally pay a telephone tax advisor for, or spend half a morning finding yourself. This has enabled me to provide more value and better offerings to my clients.
Built on UK law.
Not the open web.
HMRC manuals, primary legislation, VAT notices, and official government guidance — 100,000+ sections available.
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Searches across 100,000+ HMRC manual sections in milliseconds
Primary legislation, HMRC manuals, VAT notices, Revenue & Customs Briefs, and official government publications only.
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Full citations with every response
Complete source references with section numbers, URLs, and relevance context for every claim.
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Declines when it can't cite a source
Won't answer without a verified UK government source — and won't charge you for it.
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Refuses to answer without a citable source
If Fiscari can't cite an authoritative UK government source for your question, it says so — and doesn't charge for the refusal.
What is the VAT treatment for exported goods to EU countries post-Brexit?
Exports of goods from the UK to EU countries are zero-rated for VAT under the Value Added Tax Act 1994, Group 1, Schedule 8, provided the goods are exported within the required time limits.
Businesses must retain valid evidence of export to support zero-rating, as set out in VAT Notice 703. Acceptable evidence includes official customs documentation and commercial transport documents.
Following the UK's exit from the EU, goods sent to EU member states are treated as exports rather than intra-community supplies, applying the same zero-rating rules as any other international export.
VAT Notice 703: Exports and removals of goods from the UK
HMRC guidance on export evidence requirements
gov.uk/hmrcCited or silent.
Fiscari refuses to answer rather than guess. If it can't locate and cite an authoritative UK government source, it tells you — every answer it does give is verifiable, traceable, and defensible.
How our source retrieval works →Not another chatbot
Built for professional use, not consumer conversation
| Feature | Generic AI | Fiscari by Glasscubes |
|---|---|---|
| Source grounding | Open web training | UK legislation, HMRC manuals & tribunal case law |
| Full citations | Vague or missing | Every response |
| Refuses without a source | Unverifiable outputs | Refuses if it can't cite |
| Verifiable answers | Cannot verify | Full source URLs |
| Source currency | Training data often 1–2 years old | Corpus updated every week |
| Professional use | Not defensible | Defensible for client work |
Whether you're advising clients or building software
Purpose-built for UK tax professionals and the developers who serve them
For Accountants
Get citation-backed answers for client queries. Research complex scenarios. Verify compliance positions with confidence.
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Research client tax positions instantly
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Verify interpretations with primary sources
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Export answers with full citations
For Developers
Integrate authoritative UK tax intelligence into your SaaS or fintech platform via clean, structured API.
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RESTful API with JSON responses
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Structured citations in every response
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Rate limiting and usage analytics
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Comprehensive API documentation
{
"query": "Can I recover VAT on a car?",
"confidence": "high",
"grounded": true,
"answer": "Generally no — the blocking order in the VAT (Input Tax) Order 1992 applies to qualifying cars...",
"citations": [
{
"id": 1,
"source": "VAT Notice 700/64",
"authority": "HMRC",
"url": "https://gov.uk/guidance/vat-on-motoring-expenses"
}
]
}
Questions accountants are already asking
From compliance to planning — built for real tax work
"What is the wasting asset exemption for CGT, and how does it apply to a lease assignment with 45 years remaining?"
"How do I calculate a gain or loss on a disposal of cryptocurrency where the same coin was acquired in multiple tranches at different prices?"
"When does a member of an LLP fall within the salaried member rules, and what is the effect on the LLP's employer NIC position?"
"What is an associated company for corporation tax purposes, and how does common control through a discretionary trust affect the analysis?"
"How does the residence nil rate band taper apply where the deceased's net estate exceeds £2 million, and can the unused amount transfer on second death?"
"When does the transfer of a going concern exemption apply to a commercial property acquisition, and what conditions must both parties satisfy?"
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Designed for firms that want to standardise technical research, support knowledge sharing, maintain visibility of queries raised by team members, and ensure consistent advice across the practice.
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