SOC 1 Audit Cost: A Practical 2026 Breakdown

SOC 1 audit cost has no list price, no fee schedule and no primary source. Unlike TISAX, where the scheme operator publishes a price list, or ISO certification, where accreditation rules fix the audit-day calculation, a SOC 1 examination is a professional engagement priced by the service auditor from the scope in front of it. That makes any SOC 1 audit cost figure quoted without a scope a guess. This guide sets out what actually drives the fee, the one published CPA-firm range worth citing, where the internal cost sits — which can be larger than the fee — and how to bring both down without weakening the report.

What this guide covers

• Why SOC 1 audit cost has no fixed answer
• The one published range worth citing
• What drives SOC 1 audit cost
• SOC 1 audit cost is mostly internal
• How the SOC 1 audit cost falls in the second year
• Reducing SOC 1 audit cost without weakening the report
• Budgeting SOC 1 audit cost realistically
• Frequently asked questions

Why SOC 1 audit cost has no fixed answer

A SOC 1 examination under AT-C section 320 or ISAE 3402 is an attestation engagement performed by a licensed practitioner. The auditor scopes it from management’s description of the system, the control objectives management specified, the number of controls under them, the period, the locations and the subservice organisations, and prices the hours. Two service organisations with the same headcount can have fees that differ several times over because one has eleven control objectives across four applications in three countries and the other has six objectives on one platform.

Nobody publishes a SOC 1 audit cost tariff, the AICPA does not set fees, and any figure quoted without a scoping conversation behind it is a guess dressed as a quote. Our SOC 1 report guide explains what the auditor is being asked to examine.

The one published range worth citing

Linford & Company, a CPA firm that performs SOC examinations, publishes a cost article (updated 4 February 2026) that gives a single industry range for SOC audits — SOC 1 and SOC 2 together — of $20,000 to $150,000, with a median around $30,000, and notes that Big Four fees start in the low six figures. The firm prices its own engagements on a fixed-fee basis after scoping and explicitly warns against blind quotes.

That range is the best SOC 1 audit cost figure available. It is the most defensible figure we have found because it comes from a firm that does the work, states its date, and does not pretend to precision it cannot have. Treat it as a bracket, not a price: a small payroll processor with one application sits at the bottom of it, a multi-location fund administrator with an inclusive subservice organisation sits well above the median, and the vendor blogs quoting a tidy per-report figure are not sourcing it from anywhere better.

What drives SOC 1 audit cost

SOC 1 audit cost is mostly internal

The fee is the visible SOC 1 audit cost. The larger cost is the organisation’s own time, and it falls in four places.

• Writing the description. Management writes it, to eight required elements, and the auditor examines it. A first description for a multi-service organisation is a substantial piece of work for a capable person, spread across process owners who have to confirm every narrative.
• Specifying objectives and mapping controls. Every objective needs its risks identified and its controls linked, and each objective must pass the four attributes — relevant, objective, measurable, complete. The control objectives guide covers the work; done badly it is redone after the auditor’s first review.
• Keeping and producing evidence. For a Type 2, every control’s record for every occurrence in the period, plus complete populations, plus proof that every report used inside a control is reliable. This is the cost that never appears in a quote and dominates the first year.
• Fieldwork support. A coordinator logging requests, arranging walkthroughs, chasing owners and checking evidence; control owners answering inquiries; IT pulling listings with extraction evidence.

Two further SOC 1 audit cost items belong in the budget. A readiness assessment bought from the auditor before the examination is a separate fee and does not create management’s reasonable basis for its assertion. And the subservice organisations’ own reports, which user auditors will need where the description carves them out, may carry costs of their own to obtain.

How the SOC 1 audit cost falls in the second year

Recurring SOC 1 audit cost should be lower in both fee and effort, and the AICPA’s guidance for management says why: the effort concentrates on identifying what changed. A programme that keeps a change log through the year, collects quarterly attestations from control owners, runs its own interim tests and refreshes the description rather than rewriting it walks into fieldwork with the description current, the evidence indexed and the deviations already classified. A programme that reconstructs all of that in the month before fieldwork pays first-year prices every year. The SOC 1 audit checklist sets out what must exist on day one of the period.

Reducing SOC 1 audit cost without weakening the report

• Decide type and period from user-entity data. A period that misses most customers’ year ends produces bridge-letter requests and, eventually, a second report. Survey the year ends first.
• Prune the control set, not the objectives. A control that addresses no risk not already covered by a key control is a testing cost with no assurance value. Designate key controls and let the auditor concentrate there.
• Carve out what has its own report. The inclusive method roughly doubles the description and requires the provider’s assertion and representations; use it only where user auditors cannot get the provider’s report otherwise.
• Find deviations before the auditor does. Interim management testing at mid-period leaves time to remediate; a deviation found in fieldwork leaves none and triggers extended testing at the auditor’s rate.
• Make evidence reperformable. Populations from systems of record with query, parameters and record count; reports used in controls proven complete; sample items listed. Every re-request avoided is auditor hours saved.
• Write once for both standards. If any customers are audited outside the United States, draft the description, assertion and representation letter to satisfy AT-C 320 and ISAE 3402 together; the ISAE 3402 guide lists the seven differences.
• Do not buy a cheaper report than the customer needs. A Type 1, a narrowed scope or a shorter period that user auditors cannot use is money spent on a document that will be followed by a second one.

Budgeting SOC 1 audit cost realistically

Budget SOC 1 audit cost on three lines, not one: the auditor’s fixed fee from a scoped quote, with a contingency for extended testing after deviations; the internal effort by phase — planning, description and objectives, evidence and testing through the period, fieldwork support, reporting — with the first year weighted heavily toward the description and the evidence build; and the recurring items — readiness where bought, subservice organisations’ reports, bridge letters, and the annual cycle. Get two or three scoped quotes rather than one blind one, and compare what each firm proposes to test rather than the number alone; a low fee built on a thin sample is a report user auditors will question.

The internal line of SOC 1 audit cost is where a template pack pays for itself. The SOC 1 Toolkit supplies the description in every required element, a library of 19 control objectives with 76 risks and 77 controls to tailor rather than invent, the evidence and request list, the management testing plan and sampling guidance, the deviation register, the quarterly attestation, both assertions, the representation-letter checklist and the annual calendar — 87 documents that replace the weeks a first-year programme spends working out what to write. Against a fee in the tens of thousands, the SOC 1 Toolkit is the smallest line in the budget and the one that shortens the others.

Frequently asked questions

How much does a SOC 1 Type 2 audit cost?

There is no published price. The one dated CPA-firm range we cite — Linford & Company’s, updated February 2026 — puts SOC audits at $20,000 to $150,000 with a median around $30,000, and Big Four engagements in the low six figures upward. Where a given organisation falls depends on the drivers in the table above, and only a scoped quote will say.

Is a SOC 1 audit cheaper than a SOC 2 audit?

Not systematically; SOC 1 audit cost and SOC 2 audit cost overlap. The published range covers both. A SOC 1 examination with few objectives on one application can be cheaper than a five-criteria SOC 2; a SOC 1 with an inclusive subservice organisation across several countries will not be. Our SOC 1 vs SOC 2 guide explains what each examines.

Does a SOC 1 audit have to be repeated every year?

The report speaks to its period, so user auditors need a new one for each of their financial years. The AICPA’s guidance describes annual reports and, where customers’ year ends are spread, semi-annual ones. Recurring years are cheaper than the first.

What hidden SOC 1 audit cost should we plan for?

Extended testing after a deviation, a readiness assessment if bought, bridge letters for the gap to customers’ year ends, the subservice organisations’ own reports, and the internal evidence build in the first year — the last being the largest and the least often budgeted.