Invoice clients for penetration testing, security audits, and cybersecurity advisory. Professional invoices from Tidybill.
A cybersecurity consultant invoice covers work assessing, improving, and advising on the security of digital systems, networks, and organisational processes. Services include penetration testing, vulnerability assessments, security audits, incident response, security policy development, compliance gap analysis (GDPR, ISO 27001, Cyber Essentials), and staff security awareness training. Cybersecurity consultants must handle their invoices carefully because the nature of their work (probing for vulnerabilities) requires clear documentation linking work to signed authorisation documents. Always reference the scope of work agreement or penetration test authorisation on the invoice to establish that the work was conducted with consent. Cybersecurity rates are among the highest in the tech sector due to specialised knowledge and the liability involved.
| Service | Typical Rate | Unit |
|---|---|---|
| Penetration test (web application) | 3000 | engagement |
| Vulnerability assessment | 1500 | engagement |
| Security audit (ISO 27001 gap analysis) | 2500 | project |
| Incident response retainer (monthly) | 1200 | month |
| Security awareness training (half-day) | 800 | session |
| Cybersecurity advisory (day rate) | 750 | day |
Invoice after delivery of the engagement report, not before. For retainer-based advisory work, invoice monthly. Always reference the signed scope of work or authorisation document on the invoice. For penetration testing, a typical structure is 50% on engagement start and 50% on report delivery. Include a confidentiality note reminding both parties that invoice details referencing vulnerabilities should be handled securely.