How Much Does ISO 27001 Certification Cost?

ISO 27001 certification is growing in popularity. Applications are up 22% when compared to the previous decade. As the volume of certifications rises, more organizations are getting up to speed on what they can expect when they pursue this certification, particularly when it comes to expenses and budget.

ISO 27001 certification costs vary, but most organizations spend $10,000 to $75,000+ over the full three‑year certification cycle. The total investment depends on factors like: 

• Your company’s size
• The scope and complexity of your information security management system (ISMS)
• How much preparation you do internally versus with outside consultants or platforms

Below is a quick breakdown of typical costs:

• Preparation & Implementation ($15,000 – $40,000+)
• Certification Audit ($10,000 – $50,000+)
• Annual Surveillance Audits ($5,000)
• Recertification Audit Year 3 ($10,000 – $50,000+)

Keep reading for a complete breakdown of what to expect when budgeting for an ISO 27001 certification.

Preparation Costs

Preparation costs cover everything you do before the external audit begins. This stage determines how ready your organization is, and how much support you’ll need from outside consultants or tools.

Purchasing ISO Standards: $244

To prepare properly, you need the ISO standards themselves. ISO doesn’t make them freely available, so you’ll need to buy copies:

• ISO 27001 (requirements): ~$160
• ISO 27002 (control implementation guidance): ~$84

Together, these cost around $240. While relatively small compared to other expenses, the purchase is essential, since the 27001 standard defines the requirements, and 27002 provides detailed guidance for the Annex A controls.

Gap Analysis: $5,000 to $8,000

An ISO gap analysis is a diagnostic step that measures your current security practices against ISO 27001 requirements. Smaller companies sometimes try to do this internally, but larger orgs might turn to consultants. 

Professional gap analyses typically cost $5,000 to $8,000, depending on company size and scope. The more complex your environment, the more expensive this becomes (this trend is, of course, applicable to every other cost factor).

Internal Audits: $5,000 to $15,000 

Before you achieve certification, you’ll need to go through an internal audit. Internal audits are required by the ISO 27001 standard as a means of monitoring the effectiveness of your information security management system (ISMS). As a result of the internal audit, you will be required to implement corrective actions for any nonconformities identified.

The individual performing the internal audit must be independent of the personnel operating the ISMS. An employee of your organization can perform the internal audit, but if they are not considered independent, then you will have to hire an outside party to perform the internal audit on your behalf.

The cost of an ISO 27001 internal audit for a small to medium-sized company will fall between $5,000 and $15,000. An internal audit is required each year in order to obtain and maintain certification.  

Penetration Tests and Vulnerability Assessments: $2,500 to $20,000+

Many organizations conduct penetration testing and vulnerability assessments before certification to confirm their security controls are working as intended. As for costs:

• Penetration testing: Starts around $4,000 but can exceed $20,000 depending on scope and complexity.
• Vulnerability assessments: These usually run around $2,500 and up. They aren’t mandatory for certification, but they are highly recommended to identify gaps that could otherwise lead to nonconformities during the audit.

Readiness Tools and Planning: Varies

Some companies invest in readiness software or project management tools to centralize tasks, policies, and evidence before entering the audit phase. While not mandatory, these tools can minimize the likelihood of errors and speed up preparation. Depending on the provider, they cost anywhere from a few thousand dollars to tens of thousands annually.

Implementation Costs

Implementation will consist of training, documentation, and overseeing changes, which can quickly add up to your overall cost of certification. Let’s take a close look at how each one of these may impact your budget.

Documentation: $5,000 to $15,000+

There are specific pieces of documentation you need to get ISO 27001 certification, which will require additional time and resources.

Some of the requirements include:

• 4.3 The scope of the ISMS
• 5.2 Information security policy
• 6.1.2 Information security risk assessment process
• 6.1.3 Information security risk treatment plan
• 6.1.3 The Statement of Applicability
• 6.2 Information security objectives
• 7.5.3 Control of documented information
• 8.1 Operational planning and control
• 8.2 Results of the information security risk assessment
• 8.3 Results of the information security risk treatment
• 9.1 Evidence of the monitoring and measurement of results
• 9.2 An internal audit process
• 9.2 Evidence of the audit programs and the audit results
• 9.3 Evidence of the results of management reviews
• 10.1 Evidence of any non-conformities and corrective actions taken

The time investment here is substantial. If you have dedicated compliance staff, you may manage it in-house. Otherwise, many companies outsource documentation support to consultants, which can cost $5,000 to $15,000+, depending on how much needs to be created from scratch.

Security Tools: Varies

To address gaps uncovered during the gap analysis, you may need to invest in new security tools. Common examples include:

• Identity and access management tools to enforce least-privilege access
• Encryption solutions for data at rest and in transit
• Endpoint detection and response tools for monitoring

Much like with readiness and planning tools, these costs vary quite a bit. Still, even basic implementations can add thousands of dollars annually to your budget.

Productivity Impact: Varies 

Along with direct expenses, implementation also comes with an opportunity cost: staff time diverted away from day-to-day business activities to focus on compliance initiatives. Companies with existing mature security programs will spend less, while those building controls from scratch will spend more.

Audit Costs

Audit costs make up the formal certification process. These are the fees paid to an accredited certification body that will review your ISMS and determine if it meets ISO 27001 standards. Unlike preparation or implementation, audit costs are relatively fixed once the scope of your ISMS is defined.

Stage 1 Audit: Documentation Review ($15,000 to $50,000+)

The Stage 1 audit is a preliminary review. The auditor examines your ISMS documentation to confirm that the required policies, procedures, and records are in place. It’s essentially a readiness check before the deeper Stage 2 audit.

Usually part of the combined Stage 1 + 2 package, smaller businesses can expect to pay a $15,000 fee. Larger organizations will pay at least $20,000, but it can go upwards of $50,000.

Stage 2 Audit: Certification Audit (Same as Stage 1)

The Stage 2 audit is the comprehensive evaluation of your ISMS in practice. The auditor verifies that your documented controls are not only in place but also operating effectively. Expect them to interview staff, review system logs, and check evidence of processes being followed.

Since it’s bundled with Stage 1 audits, the price tag is the same.

Surveillance Audits: $5,000

Certification doesn’t end with the initial audit. ISO 27001 requires annual surveillance audits to ensure your ISMS remains compliant. These audits are less extensive than the Stage 2 certification but still involve thorough reviews of ongoing practices and evidence. They are, however, much cheaper than Stage 1 and 2 audits, usually at around $5,000 annually.

Recertification Audit: $15,000 to $50,000

To renew your ISO 27001 certificate, you’ll need a full recertification audit every three years. This process resembles the original Stage 2 audit and involves another comprehensive review of your ISMS. The cost for a recertification audit is the same as the original audit.

Lower Your ISO 27001 Certification Costs With Drata

The price tag for ISO 27001 is in the auditor’s invoice as much as it is in the hidden cost of time. Every policy drafted from scratch, every screenshot saved in a random folder—that’s where most organizations bleed money.

Drata flips that equation. We’re a Trust Management platform built to automate compliance and connect it to the bigger picture of risk and trust. In the context of ISO 27001 compliance, that looks like:

• Pre-mapped controls: Drata comes loaded with the full ISO 27001 control set, so you’re not starting with a blank page. Build your ISMS with templates that already align to the standard.
• Automated evidence collection: The most painful part of ISO 27001 is gathering proof that your controls work. Drata integrates with your tech stack and collects that evidence in real-time.
• Always audit-ready: Surveillance audits hit every year, and recertification comes every three. Drata keeps controls continuously monitored, which means you’re ready whenever the auditor shows up.
• Scaling beyond ISO 27001: If you’re already investing in ISO 27001, odds are you’ll need other frameworks, too (SOC 2, HIPAA, GDPR). Drata maps work across frameworks so you don’t repeat the same (expensive) effort.

ISO 27001 will always have a price tag. Drata helps you lower the cost and raise the return.

ISO Certification Cost Frequently Asked Questions (FAQs)

Below, we answer the most common questions about ISO 27001 certification costs.

How Much Does it Cost to Get ISO Certified?

The cost of ISO 27001 certification typically ranges from $10,000 to $75,000+ over a three-year cycle. Smaller organizations with fewer employees and a narrower scope land on the lower end, while enterprises with multiple locations and complex systems pay significantly more. 

Costs include preparation, implementation, the initial certification audit, annual surveillance audits, and a recertification audit every three years.

Are ISO Certifications Worth It?

For most companies, yes. ISO 27001 certification is often a requirement to win enterprise deals or enter regulated markets. But more than supporting sales, it also reduces the risk of data breaches, builds customer trust, and demonstrates a mature security posture. 

While the upfront cost can feel high, the long-term return (e.g., protecting your business and unlocking new revenue) makes certification worth it for many organizations.

How Fast Can I Get an ISO Certification?

Timelines vary. A small business with existing security processes might achieve certification in as little as six months. Larger or less prepared organizations may take 12 to 18 months to implement ISO 27001 and pass the audit fully. 

The biggest factor is preparation: how quickly you can close gaps, document policies, and train staff. Trust Management platforms like Drata can shorten that timeline quite a bit by reducing manual prep work and keeping you continuously audit-ready.