Agentic UK National Living Wage and National Minimum Wage compliance audit, pay uplift calculation schedule, and HMRC NMW arrears self-correction letter service for small employers (1–50 staff) following the April 2025 NLW increase to £12.21/hr. Replaces the payroll consultant or employment solicitor who charges £600–£2,000 to audit historic pay records, calculate arrears across worker categories (apprentice, 18–20, 21+), and produce the HMRC voluntary disclosure letter — a process where HMRC named-and-shamed 500+ employers in 2024 for NMW non-compliance.
Why now
No fresh signals provided today; justified by the April 2025 NLW rate increase to £12.21 (confirmed GOV.UK policy) and HMRC's active NMW enforcement naming rounds, which are perennial and well-documented in r/smallbusiness and r/Entrepreneur threads on payroll compliance costs.
Commercial value
Small employers with hourly-paid staff pay payroll bureaux or HR consultants £600–£2,000 per NMW audit. ~1.2m UK businesses employ hourly workers near the NMW floor; even 0.1% uptake at £299/audit is a meaningful TAM. HMRC enforcement campaigns create acute urgency. ACV £299–£799 per employer, with repeat annual demand.
Go-to-market
Target UK small hospitality, retail, and care employers via Facebook Groups ('Small Business UK', 'Hospitality Owners UK') and r/smallbusiness. Lead with 'Did your April payroll survive the NMW increase? Get a compliance audit in 48 hrs for £199.' First 10 customers via direct outreach to local restaurant/café owners. Price: £199 one-off audit + £99/mo monitoring.
2-week MVP
A single-page intake form collects employer's worker categories, hourly rates, and hours worked for the past 2 years. An LLM-backed workflow calculates arrears per worker category using the published NMW rate tables and outputs a PDF arrears schedule plus a pre-drafted HMRC voluntary disclosure letter. Cut: no payroll system integration, no automated monitoring, no multi-employer dashboard. Day-1 outcome: employer receives a defensible arrears calculation and a ready-to-send HMRC letter within 24 hours, avoiding a £20k+ penalty.
Agent score
0.67 — Commercial score high because there is a named budget line (payroll bureau/HR consultant £600–£2k) and annual recurring urgency from rate uplifts; speed high because intake form + LLM letter generation is a 1-week build and first customers are reachable via small business Facebook groups without paid ads; defensibility low because any competent developer can replicate the rate-table logic — moat only builds if historic audit data and HMRC correspondence templates accumulate proprietary depth.
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