ISO 27001 Timeline for US Companies: How Long Certification Takes

• Done for you, end to end

  We write the policies, set up the controls and evidence, run the internal audit and coordinate the independent audit. You deal with one team from first call to final report.

• Simple and quick

  A free gap assessment, then one plan with dates from day one. Effivity, our GRC automation platform, is included to keep the evidence moving.

• 8,100+ client engagements

  In 60+ countries over 20+ years, with experts who bring 30+ years of experience.

• Under US$10,000, all-inclusive

  For most start-ups and SMEs: SOC 2, ISO 27001, ISO 42001, HIPAA or ISO 9001, including the independent audit. A fixed quote follows a free gap assessment.

Every Sterling consulting engagement comes with the following, so you are not buying extras to get to the finish line:

• Effivity, Sterling's GRC automation platform, with a full-year subscription, to run your controls, evidence, tasks and audits in one place.
• Sterling Academy: preferential course access, with complimentary awareness training for your people.
• Internal auditor training for your audit team, as applicable to your standard.
• For information-security engagements, a vulnerability assessment.

These are part of the engagement, not a separate purchase. The details depend on the standard you are working toward, which we confirm during the free gap assessment.

Consulting and auditing are always separated: the people who consult never audit you. That keeps your internal audit objective and protects the independence of the CPA firm, Qualified Security Assessor or certification body that performs the final step.

Behind this are 8,100+ client engagements in 60+ countries over 20+ years, led by experts with 30+ years of experience.

What the fee covers, and what it doesn't:

• It is the fee for your first SOC 2 report or your first certification only.
• Annual work is always additional and billed the following year: later SOC 2 report periods, and ISO surveillance and recertification audits.
• It assumes a typical start-up or SME scope: one product or service and one main location.
• Larger or multi-site scopes get a fixed quote after the gap assessment.
• PCI DSS is quoted separately: a fixed quote follows a free gap assessment.

^[1] Occupational Employment and Wage Statistics, May 2025: 15-1212 Information Security Analysts, national annual median wage. US Bureau of Labor Statistics. accessed October 23, 2026.

A dated plan from week one. We build the system for you, book the certification body early and keep the calendar moving, so your team can tell US buyers when the certificate arrives.

Most timeline trouble starts when a US customer's procurement team sets a date before anyone has a plan. The company then finds that a certificate is the end of a chain: scope, risk assessment, controls in operation, internal audit, management review, then the certification body's audit stages.

One feature surprises people. Some steps cannot be rushed, because they depend on the system having actually run. Writing a policy takes days; showing people follow it takes a cycle of operation.

The durations below are Sterling's planning view from client work, not figures set by ISO or any certification body.

For a first certification with one product or service and one main location. Stages overlap, so the elapsed time is shorter than the sum of the rows.

Know what really drives the calendar, and everything else becomes faster than you expect:

1. The operating period. The certification body expects a system that has run, not one assembled the week before. In Sterling's planning view, a start-up needs at least several weeks of real operation, with evidence, before the certification audit. Any delay in starting operation moves the certificate by the same amount. 2. Internal audit and management review. These are required parts of the system and must finish before the second audit stage. They are where real issues surface, so we schedule them with room to fix what they find. 3. The certification body's calendar. Accredited bodies book auditors ahead. Sterling secures your audit window at kickoff, so dates are held while you build. A short-notice request is still a request, not a guarantee.

Writing documents is rarely the bottleneck when someone does it for you.

Your team stays on product. The split below keeps your people's hours low while the calendar holds.

• Sterling. Runs the gap assessment, drafts scope, risk assessment, Statement of Applicability, policies and procedures, sets up evidence collection in Effivity, trains your people, runs the internal audit and coordinates the certification body from booking to closing findings.
• Your engineering or IT lead. Answers configuration questions, closes technical gaps and keeps controls running during the operating period.
• Your executive owner. Approves policies and risk acceptance, and chairs the management review.
• The certification body. Audits independently and decides whether to certify. The people who consult for you never take part in that audit.

In Sterling's experience, a US start-up that holds to this split keeps the project off the critical path of its product roadmap.

What helps:

• A narrow, accurate scope. Fewer systems and sites mean fewer risks to assess and fewer areas to evidence.
• Fast answers. An engineer who replies in a day instead of a week saves more time than any template.
• Early technical fixes. MFA, single sign-on, device management and central logging most often hold up the operating period.
• One decision-maker. Someone who can approve policies and risk acceptance without a committee.
• Evidence from day one. Effivity, included with a full-year subscription, collects records as work happens.

What helps less than hoped: widening scope "just in case", longer documents, or buying software and expecting it to replace operation. See compliance tool vs consulting.

The same patterns recur across engagements:

• Scope drift. A new product line or customer request widens the boundary midway and reopens the risk assessment.
• Slow remediation. A missing MFA control or unmanaged laptops wait behind product work.
• No owner. Nobody on the client side approves documents, so they sit.
• Last-minute evidence. Screenshots saved for the final week reveal gaps with no time to fix them.
• Open findings. The certification body raises a nonconformity and the response is slow.
• Busy calendars. Year-end holidays, board weeks and fundraising sprints are poor times for interviews.

A plan with slack nearly always beats one without it.

Know your latest safe start date. Work back from the deadline in this order:

1. The date you need the certificate. 2. Minus the certification decision and time to close findings. 3. Minus the second-stage audit and its booking lead time. 4. Minus the internal audit and management review. 5. Minus the operating period.

What remains is the build window, and it gives you the latest responsible start date.

If that date has passed, you still have options. Many US buyers accept a dated plan, a signed statement of work, a defined scope and a booked audit window while certification is in progress. State status precisely: "certification in progress, target month", never "certified" before the certificate exists. Our guide to answering security questionnaires covers the wording.

Two outputs, one calendar. Many US start-ups need both: SOC 2 for American buyers and ISO 27001 for overseas customers and some regulated sectors. We build one control set and evidence it twice.

The independent steps differ. A SOC 2 report comes from an examination by a US-licensed CPA firm, as AICPA standards require^[1]; an ISO 27001 certificate comes from an accredited certification body. Each has its own scheduling, so we plan the two calendars together and stagger the fieldwork. See SOC 2 vs ISO 27001, the SOC 2 timeline and the ISO 27001 cost guide.

This is Sterling's recommendation, not a requirement of ISO or any certification body.

1. Run the free gap assessment as soon as a US deadline appears, before fixing scope or date. 2. Agree the certification body's audit window at kickoff and protect it. 3. Name one internal owner who approves documents within two working days. 4. Close technical gaps in the first two weeks, not the last. 5. Keep at least a month of slack in any plan tied to a hard contract date. 6. Give US customers a dated plan in the meantime, never an early claim.

Get started now, and the date your buyer needs becomes a date in your plan.

ISO management system standards such as ISO/IEC 27001, ISO/IEC 42001 and ISO 9001 are certified by an accredited certification body, not by a consultant^[1]. Sterling never certifies. The certificate carries the name of the body that issued it, and that independence is what makes it credible to your buyers.

What Sterling does is prepare your company so that the certification body's audit goes smoothly. We coordinate:

• a gap assessment against the standard;
• the management system itself: scope, risk assessment, policies, procedures and records, sized for your company;
• training for your people and an internal audit before the certification audit;
• management review and corrective actions;
• the certification audit process, from choosing an accredited body to closing any findings.

Consulting and auditing are always separated. The people who consult never audit you, so the internal audit is a genuine test and the certification body's audit is independent.

Sterling has completed 8,100+ client engagements in 60+ countries over 20+ years, and our experts bring 30+ years of experience.

^[1] About the IAF MLA (multilateral recognition arrangement). International Accreditation Forum (functions transferred to Global Accreditation Cooperation Inc., 1 Jan 2026). accessed October 23, 2026.

• ISO/IEC 27001: standard overviewStandard overview
• SOC 2: standard overviewStandard overview
• Clear US Enterprise Security Reviews and Questionnaires FastUnited States
• Meet US Contract, MSA and RFP Compliance Clauses FastUnited States
• ISO 27001 Cost for US Start-ups: What You Pay and What Drives ItUnited States
• SOC 2 vs ISO 27001 for US Companies: Which to Start WithUnited States
• SOC 2 Timeline for US Start-ups: How Long Each Stage TakesUnited States
• How US Start-ups Answer Security Questionnaires FastUnited States
• Compliance Tool vs Consulting for US Start-upsUnited States
• Sterling in the United StatesUnited States

1. System and Organization Controls: SOC Suite of Services. AICPA & CIMA. accessed October 23, 2026.

The information on this page is provided for general informational purposes only. It is not legal advice, and it is not a substitute for advice from a qualified attorney about your own situation.

Requirements depend on your scope, your customers' contracts, your industry and the regulations that apply to you. Two companies asking for the same standard can have very different obligations. We confirm yours during a gap assessment, and we update our content as standards change, but you should check the current text of any standard or rule that matters to you.

Sterling consults and prepares. It does not decide whether you meet a standard. That decision belongs to the independent party that performs the final step: the US-licensed CPA firm for a SOC 2 report, the Qualified Security Assessor or acquirer for PCI DSS, and the accredited certification body for ISO certificates. Timelines and outcomes depend on your readiness and on those parties.

Standards and marks named on this site belong to their respective owners.