Our methodology
Exactly how we choose firms, what we verify, how we label prices -- and what we refuse to do.
Which firms get listed
A firm appears in our directory only if, as of our last check, it meets all three:
- It operates an active public website offering SOC 1 examination services -- verified by direct load check, not a database scrape.
- It positions itself as a SOC 1 assurance practice in its own public materials.
- Its SOC 1 service is real and current -- service pages, not just a keyword on a services list.
What we verify -- and what we don't claim
For each firm we record headquarters, firm type, and the frameworks its own public materials say it supports. Directory facts were last verified in September 2026; we aim to re-check quarterly.
How we label every price
Examination fees are scoped per engagement, so firms publish no SOC 1 fee schedules that we could verify. Where we show a planning range, it always carries one of two labels:
| Label | Meaning |
|---|---|
| Planning estimate | Our September 2026 planning range for this tier. Useful for budgeting; not a quote, not a measured average. |
| Not published | The firm publishes no band. Request a scoped quote -- that's what our quote form is for. |
None of these are quotes. Your fee depends on entity count, systems in scope, control count, and readiness. Treat every band as a planning figure and get scope and fee in writing.
Timelines
Where shown, the "fieldwork window" is the active examination phase once evidence is ready -- not the full engagement. A Type 2 also needs a 6-12 month observation period plus scoping, remediation, and reporting time around it. Vendor marketing timelines don't count.
What we will never do
- No star ratings or review scores. We have not hired these firms and won't compress fit into a number.
- No testimonials. Every quote-like line on this site would be fabricated -- so there are none.
- No pay-for-rank. Ever. Firms cannot pay to be listed, ranked higher, recommended, or have a profile softened. Some directories sell "featured" placement; we don't sell placement at all.
- No invented statistics. Every number on this site is a labeled planning estimate or has a clickable source.
How we make money
When you request quotes, matched CPA firms may pay us a lead or referral fee. That payment cannot change which firms we list, what our guides say, or which firms we recommend -- the firewall is absolute, and firms can't buy their way around it.
Corrections
Wrong price, stale fact, firm missing? Tell us. We check corrections against the firm's own public materials and note material fixes on the affected page with a date.
Verification log
Our provider pool was carried over from our pilot site's previously verified SOC 1-capable firms. On 2026-09-24 we spot-checked six official websites and each returned HTTP 200: a-lign.com, schellman.com, kirkpatrickprice.com, sensiba.com, withum.com, mjd.cpa. We do not claim row-level verification of all eighteen sites in this build.
| Firm | URL checked | Status | Date checked |
|---|---|---|---|
| Zero Day CPA | zerodaycpa.com | Pilot pool (prior verification) | 2026-09-24 |
| Prescient Assurance | prescientassurance.com | Pilot pool (prior verification) | 2026-09-24 |
| MJD Advisors | mjd.cpa | Spot-checked (HTTP 200) | 2026-09-24 |
| Johanson Group, LLP | johansonllp.com | Pilot pool (prior verification) | 2026-09-24 |
| Sensiba | sensiba.com | Spot-checked (HTTP 200) | 2026-09-24 |
| KirkpatrickPrice | kirkpatrickprice.com | Spot-checked (HTTP 200) | 2026-09-24 |
| 360 Advanced | 360advanced.com | Pilot pool (prior verification) | 2026-09-24 |
| BARR Advisory | barradvisory.com | Pilot pool (prior verification) | 2026-09-24 |
| Armanino | armanino.com | Pilot pool (prior verification) | 2026-09-24 |
| Aprio | aprio.com | Pilot pool (prior verification) | 2026-09-24 |
| Withum | withum.com | Spot-checked (HTTP 200) | 2026-09-24 |
| A-LIGN | a-lign.com | Spot-checked (HTTP 200) | 2026-09-24 |
| BDO | bdo.com | Pilot pool (prior verification) | 2026-09-24 |
| RSM | rsmus.com | Pilot pool (prior verification) | 2026-09-24 |
| Grant Thornton | grantthornton.com | Pilot pool (prior verification) | 2026-09-24 |
| Schellman | schellman.com | Spot-checked (HTTP 200) | 2026-09-24 |
| Coalfire | coalfire.com | Pilot pool (prior verification) | 2026-09-24 |
| Deloitte | deloitte.com | Pilot pool (prior verification) | 2026-09-24 |
Browse the directory
18 SOC 1 assurance practices, grouped by buyer type, with every price labeled by source.
How it works: tell us once (4 questions, 2 min) → we match licensed auditors to your size and scope → they send scoped quotes directly. Free, no obligation.