A fractional CISO typically costs $1,000 to $5,000 per month for startups and small businesses, and $10,000 or more per month for mid-market and enterprise organizations. That puts the annual cost somewhere between $25,000 and $200,000 depending on the service model, scope, and how much execution support is included. Compare that to a full-time CISO hire at $200,000 or more annually, including benefits and bonuses, and the math behind outsourced security leadership becomes straightforward.
What most buyers don’t realize is how much the pricing varies based on what they’re actually buying. Three service models carry the “fractional CISO” label, and each costs very differently.
The Three Models and What Each One Costs
Before looking at numbers, it helps to understand that fractional CISO, virtual CISO, and CISO-as-a-Service aren’t the same product. They’re priced differently because they deliver different things.
Fractional CISO is typically an individual who works on a part-time or shared basis, often onsite. They provide strategic oversight but minimal execution. The team at your organization still handles the work. Annual cost runs $25,000 to $80,000, best for organizations that just need part-time leadership and already have capable internal staff to execute.
Virtual CISO (vCISO) is a remote outsourced security leader working across strategic planning, risk management, compliance, and stakeholder communication. Similar to a fractional CISO in that they provide direction, but typically comes with a network of cybersecurity resources to draw on. Annual cost runs $30,000 to $150,000 or more depending on scope.
CISO-as-a-Service is the most comprehensive model. It includes the vCISO plus a team of specialists who support and execute the security program — handling compliance audits, risk assessments, vendor reviews, policy development, and more. Annual cost runs $50,000 to $200,000 or more. For organizations without internal security staff, this is usually the model that produces real results rather than recommendations.
| Service Type | Strategic Leadership | Operational Execution | Typical Annual Cost |
| Fractional CISO | Partial, on-site | Minimal or delegated | $25K–$80K |
| Virtual CISO | Comprehensive, remote | Depends on scope | $30K–$150K+ |
| CISO-as-a-Service | Full leadership | Full team support | $50K–$200K+ |
What Drives the Price Up or Down
Two organizations can receive very different quotes for what looks like the same service. Here’s what’s actually driving that difference.
Scope of work. The most significant variable. An advisory-only retainer covering monthly check-ins and risk oversight costs far less than a full-service engagement managing SOC 2 compliance, vendor risk, vulnerability programs, and board reporting simultaneously. Know what’s included before comparing quotes.
Organization size and complexity. A 30-person startup with one cloud product has simpler security requirements than a 300-person company with multiple product lines, enterprise clients, and active compliance obligations. Providers price based on the time and expertise required to manage your specific environment.
Compliance requirements. SOC 2, HIPAA, ISO 27001, CMMC, PCI DSS — each active compliance framework adds work. An engagement covering one framework costs less than one covering three. If your organization is working toward certification for the first time, there’s also a higher upfront investment during the build phase that tends to level off once the program is running.
Pricing model. Most providers use one of three structures. Monthly retainers offer predictable billing and are most common for ongoing engagements. Hourly arrangements are flexible but unpredictable — a single incident can burn through a month’s budget. Project-based fees apply to one-off work like assessments or gap analyses. For ongoing program management, a flat monthly retainer is usually the better structure.
Advisory versus implementation. This is the distinction that explains more pricing variation than anything else. An advisory-only engagement delivers recommendations. An implementation engagement delivers the work. If your team doesn’t have the internal capacity to execute on security recommendations, an advisory-only retainer leaves you with a list of problems and no one qualified to fix them.
Fractional CISO Cost vs. Full-Time Hire
The comparison most organizations run is straightforward. A full-time CISO costs $200,000 or more annually, including salary, benefits, and bonuses. Senior CISO compensation at larger organizations runs significantly higher than that.
A fractional CISO or vCISO delivering comparable strategic leadership costs $36,000 to $144,000 per year depending on scope and service model. That’s a meaningful difference even at the high end of outsourced pricing.
The less visible savings are in hiring risk. A CISO search takes three to six months. Recruiting fees, onboarding time, and the ramp-up period before a new hire contributes meaningfully add months of cost before the program moves forward. When a full-time CISO leaves — the average tenure is under 26 months — the cycle starts over. A vCISO retainer runs month to month with no severance and no replacement search when team composition changes.
There’s also the question of whether your organization needs 40 hours per week of security leadership or 10 to 15. For most companies under 1,000 employees, the honest answer is the latter. Paying for a full-time executive when the workload doesn’t require it wastes budget that could go toward the execution work the program actually needs.
Typical Costs by Organization Type
The ranges below reflect what organizations in each category typically spend based on current market data and CISOSHARE’s own published pricing tiers.
Startups and small businesses (under 100 employees): $1,000 to $5,000 per month. At the lower end, this covers advisory-only leadership with limited hours. At the upper end, it includes more active program management with compliance support.
Mid-market companies (100 to 500 employees): $5,000 to $10,000 or more per month depending on compliance complexity and whether implementation support is included alongside strategic leadership. Organizations with active SOC 2, HIPAA, or ISO 27001 programs typically fall toward the higher end.
Enterprise and high-complexity environments: $10,000+ per month. Engagements at this level typically include a named vCISO plus supporting team, coverage across multiple compliance frameworks, board reporting, and full program management.
What to Watch Out for When Comparing Quotes
Required tool purchases. Some providers require specific GRC platforms or security tools as a condition of the engagement. These add cost outside the retainer. Ask directly before signing: are there required tool purchases beyond the monthly fee?
Hour caps and overage billing. Retainers with strict hour limits charge $250 to $400 per hour for work beyond the cap. If an incident happens mid-month, you can exhaust your hours quickly. Understand what happens when you go over before you agree to the terms.
Advisory versus implementation scope. If you’re getting quotes from multiple providers, make sure you’re comparing the same thing. An advisory retainer at $3,000 per month and an implementation retainer at $8,000 per month are different products. The more expensive one may deliver more value if your team lacks internal execution capacity.
How CISOSHARE Prices Fractional CISO Services
CISOSHARE’s published pricing is straightforward: startups and SMBs typically pay $1,000 to $5,000 per month, while mid-market and enterprise engagements run $10,000 or more per month based on complexity and scope.
What distinguishes CISOSHARE’s pricing model is that their CISO-as-a-Service approach includes both the strategic vCISO and the execution team — analysts, compliance specialists, and technical resources who handle the work that most advisory-only retainers leave on your team’s plate. For organizations without internal security staff, this is the difference between a program that runs and one that sits.
Engagements scale as needs change. During active certification preparation — SOC 2, ISO 27001, CMMC — the scope expands to match the workload. Once the program is running and stable, it can step down to a lighter ongoing management cadence.
For more on what the work looks like day to day, the week-in-the-life breakdown shows what a vCISO actually does across a typical week. If you’re weighing fractional versus full-time, the CISO-as-a-Service vs. hiring in-house comparison covers the full cost and capability tradeoff. And for a look at the different models and when each one fits, the fractional CISO vs. part-time CISO guide explains the distinctions.
FAQ
How much does a fractional CISO cost per month?
Most fractional CISO and vCISO engagements run $1,000 to $5,000 per month for small businesses and $5,000 to $10,000 or more per month for mid-market organizations. CISO-as-a-Service engagements that include a supporting execution team run higher, typically $10,000 or more per month for complex environments.
Is a fractional CISO cheaper than a full-time hire?
Yes, by a significant margin. A full-time CISO costs $200,000 or more annually in total compensation. A fractional CISO or vCISO delivering comparable leadership typically costs $36,000 to $144,000 per year, with no hiring risk, no severance, and no ramp-up time.
What’s the difference between a fractional CISO and a vCISO in terms of cost?
A fractional CISO is typically an individual working part-time, often onsite, at $25,000 to $80,000 per year. A vCISO is remote and brings a broader network of resources, ranging from $30,000 to $150,000 or more annually. CISO-as-a-Service, which includes a leadership plus execution team, runs $50,000 to $200,000 or more depending on scope.
What affects the cost of a vCISO engagement most?
Scope of work is the biggest factor — specifically how many compliance frameworks are active, how much implementation support is included, and the size and complexity of the organization’s environment.
CISOSHARE’s fractional CISO services scale from startup-level advisory to full CISO-as-a-Service with an execution team. Schedule a call to get a scope and cost estimate for your organization.
