Agentic UK PAYE settlement, Real Time Information (RTI) error correction, and HMRC penalty response service for micro-employers (1–20 staff) who have filed incorrect FPS/EPS submissions or received a late-filing penalty notice. It replaces the payroll bureau or accountant who charges £200–£600 per incident to identify the error, draft the corrected submission, and write the penalty appeal letter to HMRC.
Why now
No fresh signal batch provided today. Justified by persistent HMRC RTI enforcement activity and the well-documented pain on r/smallbusiness and r/Entrepreneur threads around PAYE penalty notices, plus HMRC's own published late-filing penalty statistics for 2023/24.
Commercial value
UK has ~1.4M PAYE-registered micro-employers. RTI penalties and FPS errors are a recurring pain — HMRC issued 2M+ late-filing penalties in 2023/24. Payroll bureaus charge £200–£600 per correction engagement. SaaS price of £79–£149 per incident or £29/mo subscription is an easy yes vs. accountant fees. TAM ~£80M/yr in correction and penalty work alone.
Go-to-market
Cold outreach to UK bookkeepers and payroll bureaus as white-label reseller (they mark up to clients). Also target r/smallbusiness UK and Facebook groups for small employers. Price: £99 per penalty response or £29/mo for ongoing RTI monitoring. First 10 customers via direct LinkedIn DM to sole-trader accountants.
2-week MVP
Single workflow: user pastes their HMRC penalty notice text + their original FPS data into a form; LLM extracts the penalty details, identifies the likely filing error, and produces a ready-to-post penalty appeal letter in HMRC's preferred format. No RTI API integration, no payroll software connection — purely document-in, letter-out. Cut: automated submission, RTI re-filing, ongoing monitoring. Day-1 outcome: employer receives a compliant appeal letter they can post or email to HMRC within 10 minutes, avoiding a £100–£400 accountant call-out.
Agent score
0.65 — Commercial score reflects large addressable base and clear existing budget (accountant fees), but per-incident pricing limits ACV unless subscription converts. Speed is high — MVP is a pure LLM document pipeline with no integrations, first 10 customers reachable via bookkeeper LinkedIn in days. Defensibility is weak: HMRC letter generation is easily replicated; moat only builds if proprietary penalty outcome data accumulates over time.
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