Penetration Testing Cost Estimator
Estimate the total cost of a penetration testing engagement based on scope, target type, complexity, and testing methodology. Costs reflect industry averages for professional security firms.
Formula
Base Labor Cost = Testers × Days × Daily Rate
Adjusted Labor Cost = Base Labor Cost × Ttarget × Tscope × Tcomplexity × Tmethodology
Retesting Cost = Adjusted Labor Cost × 0.20 (if selected)
Subtotal = Adjusted Labor Cost + Retesting Cost + Report Fee + Travel Expenses
Overhead = Subtotal × 0.12
Total Cost = Subtotal + Overhead
Cost Range = [Total × 0.85, Total × 1.15]
Multiplier Tables:
- Target Type: Web App ×1.00 | Internal Network ×1.10 | External Network ×0.95 | Mobile ×1.20 | API ×1.05 | Cloud ×1.25 | IoT ×1.40 | Social Engineering ×0.85
- Scope Size: Small ×0.80 | Medium ×1.00 | Large ×1.35 | Enterprise ×1.75
- Complexity: Low ×0.80 | Medium ×1.00 | High ×1.30 | Critical ×1.60
- Methodology: Black Box ×1.00 | Grey Box ×1.10 | White Box ×1.25
- Report Fee: Basic $500 | Standard $1,500 | Compliance-Ready $3,500
- Overhead: 12% of subtotal (project management, tooling, admin)
Assumptions & References
- Daily rates of $500–$10,000/day reflect the range from boutique consultancies to top-tier security firms (Cobalt, NCC Group, Rapid7 industry surveys 2023–2024).
- A standard working day is assumed to be 8 hours for hourly rate derivation.
- IoT and cloud engagements carry higher multipliers due to specialized tooling and expertise requirements (OWASP IoT Testing Guide, CSA Cloud Penetration Testing guidance).
- White Box testing costs more due to source code review, architecture analysis, and longer preparation time (OWASP Testing Guide v4.2).
- Retesting (20% surcharge) covers re-verification of remediated vulnerabilities, typically 1–2 days for medium engagements.
- Compliance-ready reports (PCI-DSS, HIPAA, ISO 27001) require additional documentation, evidence packaging, and auditor-facing language, justifying the higher flat fee.
- The ±15% cost range accounts for vendor negotiation, geographic pricing variation, and unforeseen scope expansion.
- Overhead (12%) covers project management, secure communication infrastructure, licensing of commercial tools (Burp Suite Pro, Cobalt Strike, etc.), and administrative costs.
- References: SANS Penetration Testing Survey 2023, Cobalt State of Pentesting Report 2024, EC-Council Penetration Testing Cost Guide, NIST SP 800-115 (Technical Guide to Information Security Testing).