Agentic UK HMRC enquiry response and First-tier Tax Tribunal preparation service for sole traders and micro-businesses (1–5 staff) who have received a Section 9A or Schedule 36 enquiry notice or a tax assessment they wish to appeal, replacing the tax investigation specialist or accountant who charges £1,500–£5,000 to draft the response, organise evidence, and prepare the tribunal bundle. Delivers a structured HMRC response letter, an evidence schedule, and a grounds-of-appeal document within 4 hours.
Why now
No fresh signal batch provided today; justified by HMRC's publicly announced compliance campaign escalation (GOV.UK, 2024–2025 compliance strategy) targeting sole traders and the gig economy, and persistent r/UKPersonalFinance and r/smallbusiness threads about HMRC enquiry letters.
Commercial value
HMRC opened 300,000+ formal enquiries in 2023–24; most small business recipients pay an accountant £1,500–£5,000 to respond, or capitulate unnecessarily. A one-time service at £399–£799 per enquiry response is highly credible against that baseline. The TAM is every UK sole trader and micro-business under enquiry — a large, recurring pool. ACV is transactional but high-margin with strong upsell to ongoing tax health checks.
Go-to-market
SEO and Reddit targeting on 'HMRC enquiry letter received' and 'HMRC Section 9A response.' Partner with bookkeepers who lack tax investigation expertise and refer out. Hook: 'Received an HMRC enquiry? We draft your response for £399 — no accountant needed.' First 10 customers via r/UKPersonalFinance, r/selfemployed, and cold outreach to bookkeeping firms as a referral product.
2-week MVP
A Typeform intake collecting the enquiry notice text (paste or upload), the business type, and the disputed figures. LLM produces: (1) a structured HMRC response letter addressing each point raised, (2) a list of evidence to gather, and (3) a plain-English explanation of the taxpayer's rights. Founder reviews and delivers via email. No automation, no portal. Day-1 outcome: customer has a ready-to-send HMRC response letter for £399.
Agent score
0.68 — Commercial score is high because the alternative spend (£1,500–£5,000 accountant) is well-documented and the fear/urgency of an HMRC letter drives immediate WTP; 300,000+ annual enquiries confirms volume. Speed score is high — document-in/letter-out MVP is buildable in under 2 weeks. Defensibility is moderate — the main risk is accountancy firms building similar tools, but a proprietary response template library and bookkeeper referral network create compounding advantages over 12 months.
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