Agentic UK Employer Reference Number (ERN) application, PAYE scheme setup, and HMRC New Employer Starter Pack compliance service for sole traders and micro-businesses (1–5 staff) hiring their first employee. Replaces the accountant or payroll bureau who charges £300–£800 to register the PAYE scheme, set up the payroll software, issue the statutory new-starter documents (P46, written statement of particulars), and enrol in Real Time Information (RTI) reporting — a process HMRC has made entirely online but which first-time employers routinely botch, triggering late-filing penalties.
Why now
No fresh signal batch provided. Justified by HMRC's ongoing RTI late-filing penalty regime and the April 2025 National Insurance rate changes for employers creating a fresh wave of sole traders hiring their first employee and needing PAYE setup guidance (https://www.gov.uk/government/publications/rates-and-allowances-paye).
Source signals
https://www.gov.uk/government/publications/rates-and-allowances-paye
Commercial value
~350,000 new PAYE schemes are registered in the UK annually. First-time employers typically pay accountants £300–£800 for setup; payroll bureaux charge £50–£150/month ongoing. ACV target £197 one-time setup + £49/month RTI filing assistant. Budget line: currently paid to accountants, payroll bureaux, or Xero/Sage onboarding partners. High volume, low friction — addressable via sole trader communities.
Go-to-market
Target sole traders hiring first employee via r/smallbusiness, r/Entrepreneur UK, and Facebook groups ('UK small business owners', 'UK self-employed'). Hook: 'Hiring your first employee? Get your PAYE set up in 24 hours — no accountant needed.' Price: £197 one-time setup pack. First 10 via Reddit and Facebook organic posts with free PAYE checklist lead magnet. Upsell to £49/month RTI filing reminder service.
2-week MVP
10-question intake form (business type, employee start date, salary, hours) that produces: (1) a pre-filled HMRC PAYE registration checklist with direct links to the HMRC portal steps, (2) a written statement of employment particulars draft, and (3) a first-month RTI submission reminder schedule. Cut: no payroll calculations, no software integration, no ongoing automated filing. LLM generates documents; founder manually QAs before delivery. Day-1 outcome: first-time employer receives the three documents they need to legally start their first employee on the correct date, replacing the £400 accountant setup fee.
Agent score
0.60 — Commercial: very high volume (350k new PAYE schemes/year), but low ACV (£197) caps revenue unless monthly upsell converts well; clear accountant budget line exists. Speed: highest speed-to-market of the batch — pure form + LLM doc generation, first 10 customers reachable via Reddit/Facebook organic in days, no paid acquisition needed. Defensibility: weakest of the batch — HMRC guidance is public, PAYE setup is commoditised; moat only if monthly RTI reminder subscription creates stickiness.
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Solve Studio is an independent AI automation and product studio founded by James Pates, working out of Brighton and London with clients across the UK. Get in touch at james@solve-studio.co.