Most PCI DSS compliance consultants sound identical. Here is how to tell them apart.
Somebody told you to get PCI compliant, and now every firm you find promises the same thing. So this page gives you the questions to put to PCI DSS compliance consultants, the warning signs to walk away from, and an honest account of where a readiness firm stops.
Our own position, stated first. Winslow Compliance Partners is not a Qualified Security Assessor. We do not perform assessments, sign Reports on Compliance, or certify anybody. We prepare businesses so their assessor finds a tidy environment, and we introduce them to independent QSA firms.
No phone number asked for, and no sales call. A written answer instead.
Nine questions worth asking
Put these to every firm on your shortlist, including us. Good PCI DSS compliance consultants welcome them, but weak ones deflect.
Teams who chose us over other PCI DSS compliance consultants
They asked all nine questions, and they asked other PCI DSS compliance consultants the same ones. That is exactly why we publish them.
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Three kinds of firm sell themselves as PCI DSS compliance consultants
These firms do genuinely different jobs, although their websites rarely say so. However, knowing which kind of PCI DSS compliance consultants you are talking to answers most of your questions at once.
Assessors, who are not PCI DSS compliance consultants
Licensed to perform the formal audit and sign the report your bank accepts. They test, but they generally will not tell you how to fix what they find, because advising and then assessing is a conflict of interest.
Scanners, the approved vendors
Only they can run the quarterly external scans and issue the official scan attestation. That covers one requirement out of twelve, so a clean scan is not compliance.
Readiness firms, where most PCI DSS compliance consultants sit
We scope, find the gaps, fix them with your team and build the evidence. Then an independent assessor validates the result. Most PCI DSS compliance consultants sit here, although not all of them admit it.
What good PCI DSS compliance consultants actually do
Five behaviours separate PCI DSS compliance consultants worth hiring from ones worth avoiding. Moreover, none of them are difficult to test for.
Good PCI DSS compliance consultants ask before they quote
Scope drives cost, so a number offered before anyone understands how you take payments is a guess. Good PCI DSS compliance consultants ask first and price second.
They explain scope, not just price
The useful conversation is about which systems fall inside the boundary and how to make that boundary smaller. Because scope reduction is the cheapest saving available, it should come up early.
They know what changed in v4.0.1
Ask about requirements 6.4.3, 11.6.1 and 8.4.2. Anyone still describing the 2022 version has not worked on a current assessment.
They are specific about what they cannot do
A firm that volunteers its own limits before you ask is telling you something useful. That is far more reassuring than a list of things it claims to be able to do.
They partner with assessors instead of posing as one
Preparation and validation are separate jobs for a reason. So a readiness firm that works openly alongside independent QSAs is the normal, healthy arrangement.
Red flags when comparing PCI DSS compliance consultants
Every one of these is common among PCI DSS compliance consultants, and every one should end the conversation. We are not naming competitors, but you will recognise the phrasing.
PCI DSS compliance consultants who guarantee a pass
Nobody can promise this, because your assessor reaches an independent conclusion. Moreover, a guarantee like that encourages box-ticking rather than security.
PCI DSS compliance consultants who offer to certify you
Certifying and validating are assessor functions. A readiness firm claiming to certify is either confused about the rules or hoping you are.
An official-looking compliance badge
There is no official seal. The Council explicitly forbids marks like "PCI Certified", so a badge on a homepage is a warning rather than a credential.
A fixed price before any scoping happens
Scope moves the price by several multiples. Therefore a firm quoting instantly either intends to change the number later or does not understand the work.
They cannot explain the questionnaires
If a firm cannot tell you plainly how the shortest form differs from the longest, they should not be choosing one on your behalf.
No mention of the March 2025 deadline
The new requirements have been mandatory since then. Silence about it usually means the firm is quoting from an old playbook.
Ask us anything before you shortlist PCI DSS compliance consultants
Send five answers and a question. You get a written reply with a budget range, usually within one business day, and an honest view on whether you even need PCI DSS compliance consultants.
Why readiness beats assessment when choosing PCI DSS compliance consultants
Businesses rarely fail because they are insecure. Instead they fail because nobody prepared the evidence, and because the boundary was never agreed. That is what good PCI DSS compliance consultants exist to prevent.
An assessor arrives, tests what you have, and writes down what is missing. That is their job and they do it well. But they are not there to fix anything, and many will not even suggest how, since advising on a control and then judging it would compromise their independence.
So the gap between those two roles is where most failed assessments live. PCI DSS compliance consultants sit in that gap. We find the issues that would fail you, fix them on a timetable you control, and hand the assessor an environment that is already tidy.
What our PCI DSS compliance consultants do, and never claim
We publish this because PCI DSS compliance consultants worth hiring will tell you their limits before you ask.
| Work | Who does it |
|---|---|
| Scoping and scope reduction | Us |
| Gap analysis against the current standard | Us |
| Remediation, hands-on with your team | Us |
| Policies, procedures and the evidence package | Us |
| Helping you understand your own questionnaire | Us, but you sign it |
| The formal assessment and the signed report | An independent QSA, never us |
| The quarterly external scans | An approved scanning vendor, never us |
| Certifying or validating compliance | An independent QSA, never us |
Who we help, and who should hire someone else
Turning away work we cannot do well is the cheapest reputation PCI DSS compliance consultants can buy. So here is the honest split.
You need PCI DSS compliance consultants and a deadline
A letter arrived, a date was given, and nobody internally has owned this before. That is the most common reason businesses hire PCI DSS compliance consultants, so it is exactly what we are built for.
You failed, or you nearly did
An assessor wrote findings and you need them closed properly before the re-test. We work through that list with your engineers rather than handing back a report.
You do not need PCI DSS compliance consultants at all
If your controls and evidence are genuinely in order, you do not need PCI DSS compliance consultants at all. Tell us that and we will introduce you straight to an assessor, at no charge.
Where our PCI DSS compliance consultants are based
You contract with Winslow Compliance Partners wherever your engagement runs. Because work is coordinated across US and UK hours, a question raised in the morning is usually answered the same working day.
Boston
Massachusetts, United States
1 Beacon StreetBoston, Massachusetts
United States
Eastern Time · US engagements
London
United Kingdom
169 PiccadillyLondon W1J 9EH
United Kingdom
Greenwich Mean Time · UK and EU engagements
Questions about hiring PCI DSS compliance consultants
What is the difference between a consultant and a QSA?
A QSA is licensed to perform the formal assessment and sign the report your bank accepts. A consultant prepares you for it. So the assessor judges, and the consultant fixes. Independence rules keep those roles apart on purpose.
Do I need PCI DSS compliance consultants, or just a QSA?
If your controls, policies and evidence are genuinely in order, you may only need the assessor. However, most businesses discover gaps once someone looks properly, and closing those before the assessment is far cheaper than failing it.
How do I tell good PCI DSS compliance consultants from bad ones?
Ask the nine questions at the top of this page. A firm that answers them plainly, states its own limits, and refuses to guarantee a pass is behaving correctly. Vagueness on any of those points is the signal.
What should PCI DSS compliance consultants cost?
Gap analysis and readiness generally runs between $8,000 and $40,000 depending on scope, with remediation on top. Readiness work typically accounts for 40 to 60 percent of first-year spend. Anything under $5,000 for real remediation is not real work.
Can PCI DSS compliance consultants guarantee we pass?
No. Your assessor reaches an independent conclusion, so no consultant controls the outcome. Anyone promising a pass is either misinformed or selling you a box-ticking exercise.
We use Stripe, so do we need PCI DSS compliance consultants?
A hosted checkout shrinks the work considerably, although it does not remove it. Requirements 6.4.3 and 11.6.1, which cover the scripts on your payment page, remain yours. Many businesses on the shortest questionnaire are surprised by that.
Why is there no phone number on this site?
Because five written questions tell us more about your situation than a discovery call would, and it also respects your time. You get a written answer instead of a calendar invitation.