ISO 27001 cost
Every figure here is quoted from a published source. These ranges come from vendors and publishers, not quotes from us. Several of the sources sell ISO services.
| Source and line item | Published range |
|---|---|
| GovernanceDocs: Stage 1 + Stage 2 certification audit (US, under 50 staff) | $5,000 – $12,000 |
| GovernanceDocs: year-one total, under 50 employees (US) | $8,000 – $30,000 |
| GovernanceDocs: year-one total, 50–250 employees (US) | $30,000 – $60,000+ |
| Probo: Stage 1 + Stage 2 audit, startup with 10–50 employees | $8,000 – $20,000 |
| Probo: surveillance audit, years 2 and 3 (each) | $3,000 – $6,000 |
| Probo: consultant-led engagement | $20,000 – $60,000 |
| Kertos: consultant-led year one, startups under 50 employees | EUR 23,000 – 49,000 |
| Kertos: certification audit fees, startups under 50 | EUR 8,000 – 14,000 |
| Kertos: annual surveillance audit from year 2, startups | EUR 4,000 – 7,000 |
Related: ISO 27001 hub · Certification bodies · SOC 2 vs ISO 27001
Frequently asked questions
How much does ISO 27001 certification cost a startup?
Published figures vary. GovernanceDocs puts a small US company at $8,000 to $30,000 in year one. Kertos cites EUR 23,000 to 49,000 for a consultant-led project at startups under 50 employees.
Is there a cost after year one?
Yes. The certificate runs on a three-year cycle with surveillance audits. Probo cites $3,000 to $6,000 for each surveillance audit in years 2 and 3.
What drives the audit fee?
Certification bodies price by audit days, which depend on scope, headcount and number of sites, according to GovernanceDocs and Probo.
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Last verified 2026-10-19. These aren't quotes. Get quotes from at least two accredited certification bodies.