Best PCI QSA firms by use case
Nine buyer-matched picks from our 18-firm directory. We don't crown a single "best" assessor -- the right firm depends on your merchant level, scope, and what your acquirer will accept. Every pick links to its full profile; prices carry their source labels.
For small merchants, the strongest fits in our directory are SecurityMetrics (bundled ASV + SAQ + QSA) and ControlCase (fixed-fee mid-market). For Level 1 ROCs, Coalfire and Schellman lead on bench depth. Linford & Company is the price-transparency benchmark with firm-published bands. Confirm QSA-company listing status before engaging.
Linford & Company
Best for: Best price transparency for first-time buyers
Why: The rare QSA company that publishes its bands: ROC $30,000–$200,000 and QSA-assisted SAQ up to $40,000 (firm-published). That candor makes it the benchmark quote in any shortlist.
Not ideal when: A smaller practice -- confirm capacity and scheduling for your assessment window.
SecurityMetrics
Best for: Best bundled program for small merchants
Why: A PCI-native vendor combining ASV scanning, SAQ guidance, and QSA assessment -- one relationship for the whole small-merchant compliance program.
Not ideal when: Ask where the QSA practice's independence line sits relative to its managed-compliance products.
ControlCase
Best for: Best fixed-fee option for the mid-market
Why: Known for fixed-fee, technology-driven PCI engagements -- predictable budgeting for mid-market merchants and service providers.
Not ideal when: Confirm what the fixed fee excludes -- remediation support and re-testing terms matter.
Matched to a pick? Tell us your scope once -- get quotes from these firms. Free · 2 minutes · no obligation.
Request quotesCoalfire
Best for: Best for large, complex Level 1 programs
Why: One of the largest PCI practices in the world, with hundreds of assessments a year. Deep bench for sprawling, multi-entity cardholder environments.
Not ideal when: Large-practice process and pricing -- more than a straightforward SAQ merchant needs.
Schellman
Best for: Best for regulated and multi-framework buyers
Why: Independence-first assessors with PCI, SOC, ISO, and FedRAMP breadth -- a fit when the ROC is one track of a larger assurance program.
Not ideal when: Premium positioning. Overkill for a simple SAQ validation.
CampusGuard
Best for: Best for universities, healthcare, and hospitality
Why: A niche practice built for sprawling, decentralized card-acceptance footprints -- campuses, hospital systems, hotel groups.
Not ideal when: Niche focus -- outside its core verticals, confirm fit and bench depth.
Matched to a pick? Tell us your scope once -- get quotes from these firms. Free · 2 minutes · no obligation.
Request quotesSysnet Global Solutions
Best for: Best for acquirers and portfolio-scale programs
Why: One of the largest dedicated PCI compliance companies globally, built for managing PCI across thousands of sub-merchants.
Not ideal when: Portfolio-scale model -- individual merchants should confirm direct support levels.
A-LIGN
Best for: Best for bundling PCI with SOC 2 and ISO
Why: Technology-enabled delivery across PCI, SOC, ISO, HITRUST, and FedRAMP -- one evidence set, multiple reports.
Not ideal when: High-volume model -- ask who your engagement team is and how evidence review is staffed.
KirkpatrickPrice
Best for: Best mid-market all-rounder
Why: An established assurance specialist with PCI, SOC, and HITRUST under one roof -- the middle ground between a boutique and a global firm.
Not ideal when: An assessment firm, not a GRC platform -- ask how evidence collection works with your stack.
How to use this shortlist
- Start with the validation requirement. Confirm your merchant level and whether your acquirer requires a ROC or accepts an SAQ -- in writing. Don't pay ROC prices for an SAQ requirement.
- Match the firm to your scope. Check locations, systems, applications, and service providers before comparing prices.
- Get scoped quotes. Normalize proposals on the same scope before comparing totals -- fee, sampling, re-testing terms, and timeline.
Get quotes from your shortlist
Tell us your scope once -- matched assessors reply with ballparks, timelines, and what makes them different.
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.