ComplyTrack and PenaltyProof both offer Companies House compliance monitoring. ComplyTrack is framed primarily as a tool for businesses and directors managing their own filings; PenaltyProof is designed for accountants monitoring a client portfolio. This comparison covers where the tools differ on coverage, pricing structure, and intended use.
What ComplyTrack is
ComplyTrack is a Companies House compliance monitoring service. It tracks confirmation statements, annual accounts, and company status information sourced from the CH public API. The pricing is company-slot based: a free tier covers two companies, Professional covers 15 companies at £12/month, Business covers 75 at £35/month, and Enterprise covers unlimited at £99/month (all prices as checked June 2026; 20% annual discounts available).
Alerts are delivered by email on the free tier, with Slack and SMS notification channels available on higher plans. The service is positioned for SMEs, business owners, and accountants managing compliance filings. The pricing page does not document coverage of HMRC obligations — VAT, Corporation Tax, CIS, RTI, or Self Assessment are not listed as monitored filing types.
There is no time-limited trial: the free two-company tier is the entry point, with upgrade available at any time.
What PenaltyProof covers
PenaltyProof is designed for accountants monitoring a client portfolio rather than a business owner monitoring their own company. It covers Companies House annual accounts and confirmation statements, plus 10 further obligation types: VAT returns, Corporation Tax, CIS monthly returns, RTI/FPS, P11D and Class 1A NIC, Self Assessment, pension auto-enrolment re-enrolment and re-declaration, ECCTA identity verification, and MTD for ITSA. Charity Commission annual returns are in development.
Supported HMRC-rule reminders are configured per client — VAT stagger group, CT period end, pension staging date — as a one-time setup step. There is no HMRC API integration; PenaltyProof calculates supported HMRC deadlines from the rules and configuration you supply.
Pricing: free tier covers 5 companies; Starter £29/month covers up to 50 companies; Pro £39/month covers unlimited companies. A 30-day trial includes paid features.
Where ComplyTrack is as good or better
- Free entry point for two companies: ComplyTrack's free tier has no time limit. PenaltyProof's free tier covers 5 companies but with overdue-only alerts — no advance cadence.
- Price for small portfolios: At 15 companies, ComplyTrack charges £12/month. PenaltyProof's Starter covers 50 companies at £29/month. For fewer than 50 clients who only need CH coverage, ComplyTrack's Professional is cheaper.
- Slack and SMS alerts: ComplyTrack offers Slack and SMS notification channels on paid plans. PenaltyProof delivers alerts by email only.
- No credit card to start: ComplyTrack's free tier requires no payment details. PenaltyProof's 30-day trial requires a card.
- Company status and director data: ComplyTrack explicitly lists company status and director information as monitored fields from CH. PenaltyProof also monitors company status but is primarily an alert service rather than a company-data dashboard.
Comparison table — price for coverage
| Feature | PenaltyProof | ComplyTrack |
|---|---|---|
| Free tier | 5 companies, overdue alerts only, no card needed | 2 companies, email alerts, no card needed, no time limit |
| Small portfolio (~15 cos) | £29/mo (up to 50 cos) | £12/mo (up to 15 companies) |
| Mid portfolio (~75 cos) | £29/mo (up to 50 cos) | £35/mo (up to 75 companies) |
| Unlimited portfolio | £39/mo (Pro) | £99/mo (Enterprise) |
| Alert channels | Email only | Email, Slack (Professional+), SMS (Business+) |
| HMRC obligations | 10 types (VAT, CT, CIS, RTI, P11D, SA, pension, ECCTA, MTD ITSA) | Not documented on pricing page (checked 2026-06-11) |
| Alert cadence (paid) | 30, 14, 7 days before deadline; overdue notices | Custom alert timing on Professional+; exact cadence not documented |
| Primary framing | Accountants monitoring a client portfolio | SMEs, business owners, and accountants |
Who should choose ComplyTrack
ComplyTrack is the better fit when:
- You are a business owner or director monitoring your own company's Companies House filings rather than an accountant managing a portfolio
- You need a small-company-count plan cheaper than £29/month — the £12/month Professional tier covers 15 companies
- You need Slack or SMS alerts in addition to email
- CH filing deadlines and company status are the only obligations you need to track
Who should choose PenaltyProof
PenaltyProof is the better fit when:
- You are an accountant monitoring a portfolio and need HMRC obligations (VAT, CT, CIS, RTI, P11D, SA, pension, MTD ITSA) alongside CH deadlines
- You want staged advance alerts — 30, 14, 7 days — rather than a single reminder near the due date
- You need overdue notices when a deadline passes and no filing is detected
- Your portfolio has more than 15 companies and you want unlimited coverage at a fixed price
PenaltyProof covers Companies House and supported HMRC-rule reminders across your client list and sends staged advance alerts — without Slack or SMS, but with coverage depth across 10 compliance types. Try Starter (£29/month, up to 50 companies) free for 30 days with advance alerts 30 days, 14 days, and 7 days before each deadline, plus due-date and overdue alerts. Cancel any time during the trial.
Start 30-day free trial →or monitor free for up to 5 companies with Companies House monitoring (no card).
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