What is the difference between SOC 2 Type I and Type II?

A Type I examination assesses whether controls are suitably designed at a point in time. A Type II examination assesses whether those controls operated effectively over a period (commonly 3–12 months).

What other frameworks does this approach cover?

SOC 2 (AICPA TSP 100) and PCAOB AS 2201 (ICFR) are delivered today. PCI DSS, the HIPAA Security Rule, and ISO 27001 are authored into the same core and maturing behind them.

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SOC 2 Type II controls testing

SOC 2 Type II evaluates whether a service organization’s controls — across the Trust Services Criteria (AICPA TSP 100) — operated effectively over a period. Full-population control testing evaluates those controls against every in-scope record, returning the exact exception rate instead of one inferred from a sample.

Last updated June 24, 2026

What a Type II examination tests

A Type I report assesses whether controls are suitably designed at a point in time. A Type II report goes further: it tests whether those controls operated effectively across a review period — so the evidence is a history of operation, not a single snapshot.

How full-population testing applies

Each control is evaluated against every in-scope record over the period, so the result is a measured exception rate across 100% of the population. The auditor verifies each surfaced exception, sets the thresholds that turn a rate into a finding, and owns the opinion. See what full-population testing is and how it compares to sampling.

Beyond SOC 2

SOC 2 is the most mature framework for this approach today. PCAOB AS 2201 (ICFR), PCI DSS, the HIPAA Security Rule, and ISO 27001 are authored into the same core and maturing behind it.

SOC 2 Type II tests operating effectiveness over a period (AICPA TSP 100).
Full-population testing covers 100% of in-scope records over that period.
SOC 2 is the most mature framework for this approach today.
AS 2201, PCI DSS, the HIPAA Security Rule, and ISO 27001 are maturing in the same core.

FAQ

What is the difference between SOC 2 Type I and Type II?: A Type I examination assesses whether controls are suitably designed at a point in time. A Type II examination assesses whether those controls operated effectively over a period (commonly 3–12 months).
Does full-population testing apply to SOC 2?: Yes — SOC 2 Type II is where full-population control testing is most mature. Each control is evaluated against every in-scope record over the period, returning a measured exception rate rather than one inferred from a sample.
What other frameworks does this approach cover?: SOC 2 (AICPA TSP 100) and PCAOB AS 2201 (ICFR) are delivered today. PCI DSS, the HIPAA Security Rule, and ISO 27001 are authored into the same core and maturing behind them.