Virtual CISO Cost: What to Expect in 2026

The baseline numbers

Most retained fractional CISO engagements price between $8,000 and $25,000 per month. That's a 3x range, which sounds wide until you realize that "fractional CISO" describes a role, not a fixed product — the same way "consultant" or "lawyer" describes a role. What you're actually buying varies dramatically by firm.

For context on stage-appropriate spend:

• $8,000–$12,000/mo — Series A SaaS, ~5–8 hours of advisory per month, mid-career operator, single named CISO leading the engagement, quarterly board reporting included.
• $15,000–$22,000/mo — Series B fintech or regulated SaaS, ~10–15 hours per month, former Fortune 500 CISO leading, audit and customer-questionnaire support included, retained incident-response coverage.
• $20,000–$35,000/mo — Series C+ regulated company, 15–20 hours per month, deep specialist support (assessments, GRC, ethical hacking) included, transition planning to full-time CISO active.

Below $5,000 you're typically buying productized software with light human oversight. Above $35,000 with no specialty premium (nation-state, defense, multi-billion-dollar risk surface), you're paying for the firm's brand rather than the operator's pedigree.

What drives the price

Four factors set the actual number. They compound, which is why two engagements at "the same" hours can quote 2-3x apart.

1. Hours per month

The most direct driver. 5 hours/mo of executive advisory is enough for a mid-stage company with a settled program. 15-20 hours/mo is what an active program needs when audit cycles, customer questionnaires, and quarterly board reporting all hit. Most firms quote in retainer bands (5/10/20) rather than hourly — buy what your stage actually requires, not the cheapest tier.

2. Operator seniority

A former CISO of a Fortune 500 financial-services company costs more per hour than a CISO who came out of a 100-person SaaS startup. Both can be the right hire — the question is whether the engagement needs the senior operator's specific experience. Buying senior pedigree for routine SOC 2 prep is overkill; buying mid-career advisory for a Series B fintech facing OCC scrutiny is under-investing. The engagement letter should name the operator and describe their specific background.

3. Scope breadth

Strategy + board reporting alone is the cheapest scope. Adding SOC 2 audit support, vendor risk program management, third-party diligence questionnaires, and incident response retention each add real hours. Some firms productize this with tier names ("Strategic," "Growth," "Enterprise"); others custom-quote per engagement. Custom usually fits better but takes more management overhead from your side.

4. Industry and regulatory complexity

Fintech with banking-partner reviews and NYDFS Part 500 exposure is a different program than B2B SaaS selling to mid-market companies with SOC 2 Type II. The operator's industry-specific expertise materially changes what hours actually deliver. A fintech-pedigreed fractional CISO is worth the premium for fintech specifically; not so much for an unrelated industry.

Cost vs hiring full-time

A full-time CISO at a Series B-stage SaaS or fintech company costs $350,000–$500,000 all-in: base salary $250K–$350K, performance bonus $40K–$80K, equity, benefits, recruiting fees, plus the typical $50K–$100K of supporting tooling and team headcount the role pulls in.

A fractional engagement at $18,000/mo runs $216,000/year — roughly 50% of the all-in full-time cost while typically delivering 70–80% of the strategic value at most growth-stage companies. The math works because most companies don't yet need full-time CISO attention. They need executive-level judgment for ~15 hours per month, and the rest of the time they want their CTO and head of engineering to keep building.

The model breaks down once your security workload genuinely needs full-time attention — usually around Series C, post-IPO, or when you're regulated enough that a CISO needs to be in your office every day. A good fractional CISO will help you make the transition, not delay it.

What's included vs billed extra

Engagement letters vary, but here's what reputable firms typically include in retainer pricing versus quote separately as fixed-fee projects.

Typically included in the retainer

• Executive strategy and program direction
• Board reporting (quarterly cadence, custom materials)
• Customer security questionnaire support
• Vendor risk review participation
• Policy authorship and annual update cycle
• Audit-walkthrough representation as the named security officer
• Incident-response leadership for routine events (small data exposures, third-party concerns)

Typically billed separately as fixed-fee projects

• Dedicated cybersecurity assessment — $15,000–$50,000 depending on scope (technical pen test, policy gap analysis, framework readiness)
• M&A cyber due diligence — $25,000–$100,000 depending on deal size, target complexity, and timeline pressure (see M&A Due Diligence service)
• Major incident response — work above ~40 hours typically priced at $350–$650/hr depending on operator seniority and event complexity
• Specialized regulatory engagements — FedRAMP authorization, FINRA cybersecurity attestation, state money-transmitter compliance — these are project-shaped, not retainer-shaped

A reputable firm tells you up front when retainer-scope work is about to spill into project work. They don't surprise you with overage charges on the next invoice. If "out of scope" appears in monthly billing without prior conversation, that's an engagement-management red flag, not a real pricing dispute.

How to budget by company stage

Rough working numbers — adjust for your industry's regulatory complexity:

• Pre-seed / seed (1–25 employees, no regulated data): Probably don't need a fractional CISO yet. Spend the budget on basic security hygiene tooling (SSO/MFA, endpoint protection, password manager). Reconsider when you sign your first enterprise customer or hit Series A.
• Series A (25–80 employees, SOC 2 Type I in motion): $8,000–$12,000/mo. Buy executive-level oversight for your security program. The named CISO becomes your audit point of contact and signs the management discussion sections of the SOC 2 report.
• Series B (80–200 employees, regulated SaaS or fintech): $15,000–$22,000/mo. Active compliance program, customer questionnaires hitting weekly, banking-partner third-party reviews, and likely the first board with cyber on its quarterly agenda.
• Series C+ (200+ employees, multi-framework compliance): $20,000–$35,000/mo, with an explicit transition plan to a full-time CISO hire within 12–18 months. Use the fractional CISO to build the role, document the playbook, and source candidates.
• Pre-IPO or $1M+ in annual cyber risk exposure: Hire full-time. You'll outgrow the fractional model fast, and a regulator review of "named CISO is part-time" becomes a friction point.

Pricing red flags

Patterns that distinguish weak engagements from strong ones — independent of the dollar amount:

• Big discount with no scope reduction. A 50% price cut to win the deal — without reducing hours or seniority — usually means the original quote was padded or the firm plans to staff you with someone less senior than the proposal implied.
• "Unlimited hours" offerings. There is no such thing for senior executive advisory. This is either a bait-and-switch (junior staff doing the actual work) or a productized platform mislabeled as an executive engagement.
• Auto-renew with no review cadence. The right structure has a quarterly check-in where both sides explicitly evaluate whether the engagement is delivering. Auto-renew without review means the firm is optimizing for revenue continuity, not your outcomes.
• Pricing more than 50% below market. If senior fractional advisory in your industry runs $15K–$22K/mo and the proposal is $7K, the operator is too junior, the bench is rotating, or the firm is buying short-term revenue and won't make money on the relationship. None of these end well.
• Pricing more than 50% above market without a clear premium reason. Big-name consulting firms charge a brand premium that mid-market companies usually don't get value from. If the operator's pedigree justifies the premium (Fortune 50, nation-state, multi-billion-dollar risk surface), it can be worth it. If the firm is famous but the operator on your engagement isn't, you're subsidizing other clients.

vCSO.ai's fractional CISO practice runs on a single-named-operator model — Nick Shevelyov leads every engagement, supported by specialists in assessment, compliance, and operations. The firm focuses on growth-stage companies, PE/VC portfolio operators, and pre-exit enterprises. For broader role definition, see "What is a fractional CISO?"; for a hiring framework, see "How to choose a fractional CISO".