The MSP's Guide to Adding Pentesting as a Service

Adding pentesting as a service is one of the highest-margin moves an MSP can make in 2026. Cyber insurance underwriters increasingly require evidence of security testing, compliance frameworks mandate it, and clients actively ask for it. The barrier has always been economics: traditional pentests are too expensive to subcontract with a good margin, and hiring a dedicated pentester is too costly for most MSP headcount budgets. AI pentesting platforms solve both problems, giving MSPs a way to deliver genuine security validation at a cost structure that makes recurring resale viable.

Why Add Pentesting Now

Three converging pressures are creating demand for pentesting across the SMB market that MSPs serve.

Cyber insurance requirements: Insurers are tightening policy conditions. Many now require evidence of annual penetration testing as a condition of coverage or as a prerequisite for preferred premium rates. When a client asks their insurance broker whether their current security programme qualifies, the broker's answer increasingly depends on whether pentesting is in the mix.

Compliance mandates: Cyber Essentials Plus, ISO 27001, PCI DSS, and SOC 2 all require security testing with varying frequency and depth. As more SMBs pursue these certifications to satisfy customer due diligence requirements, pentesting becomes a mandatory purchase rather than a discretionary spend.

Client demand: Security incidents at SMBs are widely reported in trade press and business media. Clients are more aware of cyber risk than they were three years ago, and they are asking their MSPs what they are doing about it. "We manage your antivirus" is no longer an adequate answer.

MSPs that can offer pentesting have a clear differentiator in competitive sales situations. Those that cannot are increasingly asked to justify why their security offering does not include validation.

Choosing a Platform: Build, Buy, or AI

MSPs considering how to add pentesting have three structural options.

Build in-house: Hiring one or more qualified pentesters gives you full control and the deepest capability. The cost is also the highest: a mid-level penetration tester commands £60,000-80,000 per year in the UK market, and you need a pipeline of work to justify full-time headcount. Unless you have 20 or more clients who will purchase pentesting annually, in-house hiring is difficult to justify on direct economics alone. It makes more sense once you have validated the service with a platform approach and grown the revenue base.

Subcontract to a consultancy: You can partner with a pentesting firm, resell their engagements at a margin, and handle client communication yourself. The economics are challenging: consultancy engagements cost £5,000-20,000, leaving limited room for a resale margin that makes the admin overhead worthwhile. Scheduling and turnaround times are also outside your control, which creates client expectation management problems.

AI pentesting platform: Platforms like Revelion give you the capability without the headcount. You pay a monthly platform fee, run scans yourself through the portal, and deliver white-label reports under your brand. Per-scan costs are a fraction of manual engagements. Turnaround is hours, not weeks. You control the client relationship throughout. For most MSPs, this is the right starting point.

Revelion's MSP plan is £299 per month for up to 25 client environments and 400,000 credits per month. That gives you the capacity to run multiple scans per client per month at a total platform cost that is less than the subcontracted cost of a single traditional engagement.

Pricing Pentesting to Clients

Pricing pentesting as a service depends on what you are delivering and how you position it. There are two primary models.

Recurring monthly retainer: You include a defined number of scans per month (typically one to four, depending on the client's environment size) as part of a monthly security retainer. This is the cleanest commercial model: predictable revenue, predictable delivery, and a clear client value proposition. Monthly retainers typically run from £150 to £500 per client, depending on environment size and scan frequency. At £250 per month across 20 clients, you are generating £5,000 monthly recurring revenue against a £299 platform cost.

Annual assessment: You deliver one comprehensive annual pentest as a project, priced at £1,500 to £5,000 depending on scope. This model is easier to sell to clients who think of pentesting as a compliance checkbox, and it mirrors the way traditional pentesting is procured. The margin is healthy, though the revenue is less predictable.

The recurring model is usually preferable for MSPs building long-term client relationships. Clients who pay monthly for security testing are invested in the ongoing results, and the continuous testing posture is genuinely better security than annual snapshots.

When pitching to clients, anchor the price on the alternative. A single traditional pentest costs £5,000-15,000 and delivers a one-time snapshot. Your retainer delivers continuous testing, monthly reporting, and remediation verification for a fraction of that cost per year. The value comparison is straightforward.

Delivering White-Label Reports

White-label reporting is essential for MSPs. Clients should receive reports branded with your company name and logo, not the underlying platform's. This maintains your position as the security partner rather than positioning you as a reseller, and it protects your client relationships from disintermediation.

Revelion's MSP plan includes white-label reporting as standard. Reports are generated automatically when a scan completes, structured with an executive summary, technical findings, proof-of-concept evidence, CVSS severity scores, and prioritised remediation guidance. Your branding is applied throughout.

For client delivery, consider a brief walkthrough call alongside the report. Most SMB clients are not security specialists, and a 30-minute call walking through the executive summary and top three findings dramatically increases their understanding and appreciation of the service. It also positions you as a trusted advisor rather than a report-delivery mechanism.

Document remediation actions agreed on the call and schedule a retest after the client's development or IT team has addressed findings. Closing the loop with a retest report that shows improved posture is the most powerful demonstration of service value.

Managing Multiple Clients at Scale

The operational challenge of pentesting as a service is managing scan schedules, findings, and remediation workflows across a client portfolio without it becoming full-time work. The key is tooling and process.

Revelion's portal provides client-level isolation, meaning each client's scan history, reports, and findings are kept separate and accessible through the same interface. You can manage all 25 clients from a single login without data crossing between environments. This is essential for both operational efficiency and client confidentiality.

Build a simple monthly process: initiate scans in the first week of the month, review findings and generate reports in the second week, deliver reports and hold review calls in the third week, and schedule retests based on remediation timelines in the fourth. With 20 clients on a monthly retainer, this is 20-30 hours of work per month, manageable for one engineer alongside other responsibilities.

As your portfolio grows beyond 25 clients, consider whether hiring a junior security analyst to manage the scan/review cycle makes sense. At £250 average monthly retainer across 50 clients, you are generating £12,500 MRR from a service line with a £299 platform cost. That revenue base supports dedicated headcount, and the analyst enables further growth.

Scaling with AI: The Compound Advantage

The fundamental advantage of the AI pentesting model for MSPs is that your capacity to deliver pentesting scales independently of headcount. With a manual pentesting operation, adding clients means adding people. With Revelion, adding clients means initiating more scans, something the platform handles automatically.

This creates a different growth economics from most MSP service lines. Managed endpoint protection has roughly linear headcount scaling: more clients means more alerts to triage, more tickets to handle, more systems to patch. Pentesting with AI has near-flat headcount scaling: the AI does the testing, your team reviews results and communicates with clients.

Start with Revelion's free tier to run your first scans and validate the service proposition with two or three existing clients. When you are ready to roll out across your portfolio, the MSP plan gives you the multi-tenant infrastructure, white-label reporting, and credit volume to do it at scale.