Services PCI DSS for Service Providers
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PCI DSS QSA Assessments for Service Providers

If your platform stores, processes or transmits cardholder data on behalf of other businesses, or can impact the security of their cardholder data, you are a PCI DSS service provider. SaaS platforms, fintechs, payment gateways, PSPs, cloud hosts and MSPs all inherit obligations their merchant customers will ask them to evidence.

RedSecLabs is a PCI SSC Qualified Security Assessor (QSA) Company specialising in service-provider environments: multi-tenant SaaS, payment orchestration, hosting and managed services. We deliver Level 1 ROC assessments, SAQ D validation for Level 2 providers, responsibility matrices your customers' assessors will accept, and the technical testing Requirement 11 demands.

For providers, PCI DSS status is commercial infrastructure: an AOC wins enterprise deals and shortens security review cycles.

CREST Member Company CREST Penetration Testing Provider PCI SSC Qualified Security Assessor (QSA) Company ISO 27001 Certified UKAS Accredited Certification AICPA SOC 2

Get Your Fixed-Fee Quote

Tell us what needs testing. You’ll get a scoped, fixed-fee quote back the same business day, from a senior assessor, not a sales rep. No obligation, no spam.

✓ Same-day response✓ Fixed-fee, no surprises✓ Senior testers only✓ Retest included

We reply within one business day with next steps. Your details are used only to scope your enquiry, never shared or sold.

✓ PCI SSC QSA Company · ✓ CREST accredited · ✓ UKAS-certified ISO 27001 & 9001 · ✓ IASME Certification Body · ✓ Same-day scoping response
Who this is for

This service is a fit if you’re..

1
SaaS & platforms in scope
Software touching cardholder data flows whose enterprise deals stall on PCI status.
2
Hosting, gateways & processors
Infrastructure and payment providers needing a Level 1 or Level 2 service provider AOC clients accept.
3
Providers joining the SSC lists
Working toward Visa and Mastercard registered service provider listings that acquirers check.

PCI DSS for Service Providers, Quick Facts

Last reviewed: 2026-05-21
Who qualifies
SaaS, fintech, PSPs, payment gateways, cloud/hosting, MSPs/MSSPs, tokenisation and any entity able to impact customer cardholder data security
Level 1 trigger
Typically 300,000+ annual transactions, or designation by a card brand; requires QSA-assessed ROC and AOC
Level 2 route
SAQ D for Service Providers, self-assessed; many providers upgrade to a voluntary ROC for commercial standing
Key deliverables
ROC/AOC or validated SAQ D, customer responsibility matrix, evidence pack for customer assessors
Commercial upside
Card-brand registered provider listing; faster enterprise security reviews; fewer bespoke audits
Delivered by
RedSecLabs, PCI SSC QSA Company with in-house CREST penetration testing
SP L1
300k+ transactions or brand-designated
ROC/AOC
Enterprise-grade validation
SAQ D
Level 2 provider route
Matrix
Customer responsibility mapping

What is a PCI DSS service provider?

The PCI SSC defines a service provider as any entity that stores, processes or transmits cardholder data on behalf of another entity, or that can impact the security of a customer's cardholder data environment, hosting providers, managed security services, tokenisation vendors, gateways and many SaaS products qualify even when they never see a full PAN. Service provider levels differ from merchant levels: Level 1 typically applies above 300,000 annual transactions or on card-brand designation, and requires a QSA-assessed Report on Compliance; Level 2 providers may use SAQ D for Service Providers.

Two things make provider compliance distinctive. First, your controls are inherited by every customer: their assessors will ask for your AOC and a responsibility matrix that states exactly which requirements you cover and which remain the customer's. Second, validated providers can be listed on the card brands' registered provider programmes, a genuine sales asset in payments and fintech.

Using a PSP like Stripe or Adyen does not remove your obligations if your systems touch cardholder data or can affect its security, redirect and iframe architectures reduce scope, they do not eliminate it. Our scoping and segmentation assessment establishes precisely where your responsibility begins and ends before any validation work starts.

What PCI DSS compliance delivers:

Eligibility to accept card payments under acquiring bank agreements

Reduced exposure to fines following any card data breach

Lower transaction fees with major card schemes

Cyber insurance coverage eligibility

Customer and partner trust around payment data handling

Evidence reusable for SOC 2, ISO 27001, and broader compliance programmes

Compliance is annual, and the bar continues to rise. v4.0.1 makes scoping accuracy and continuous control operation far more material than under previous versions.

Why PCI DSS matters

Card data breaches remain among the most damaging and costly cyber incidents an organisation can experience. Beyond direct fraud costs, breached merchants face card scheme fines, mandatory forensic investigation by PFI-approved investigators, increased transaction processing fees, and lasting customer trust damage.

PCI DSS is not optional, it is a contractual requirement under every major acquiring bank agreement. Non-compliance can result in fines starting from £5,000 per month, escalating significantly after a breach, and ultimately to suspension of card-acceptance privileges.

Common consequences of weak PCI DSS programmes:

Card scheme fines from £5,000 to £100,000+ per month

Mandatory PFI investigation after any suspected breach

Increased transaction processing fees

Acquiring bank termination of merchant agreements

Direct breach costs averaging £3.4M in the UK in 2025

Brand and customer trust damage following public incidents

Strong PCI DSS programmes reduce breach probability, limit financial exposure when incidents occur, and become a strategic asset rather than an annual overhead.

Who needs PCI DSS compliance?

PCI DSS applies to every organisation that interacts with cardholder data. RedSecLabs delivers across all merchant and service provider tiers:

E-commerce merchants (all levels)

Retail and in-person POS merchants

Payment service providers and gateways

Card processors and acquirers

Cloud hosting providers handling cardholder data

Contact centres processing phone payments

Software providers in PCI scope (payment apps)

Logistics and fulfilment where card data flows

If your organisation touches cardholder data, even briefly, even via redirect. PCI DSS applies. We scope your assessment level and SAQ type as the first step of every engagement.

Our PCI DSS Methodology

An eight-stage methodology covering the full PCI DSS compliance lifecycle, from initial scoping through annual renewal.

01

Scope Definition

We map cardholder data environments (CDE) and confirm which systems are in scope, in connected scope, or out of scope through network segmentation.

02

Merchant Level Determination

We confirm your merchant or service provider level and identify the correct assessment route. SAQ type or full Report on Compliance (ROC).

03

Gap Analysis

Comprehensive review against all 12 PCI DSS requirements with control-by-control evidence sampling and remediation prioritisation.

04

Remediation Support

Hands-on guidance on common weak areas: network segmentation, encryption key management, authenticated scanning, audit logging, secure development.

05

Quarterly ASV Scanning

External vulnerability scanning by approved scanning vendor (ASV) on a quarterly basis, with remediation support between scans.

06

Annual Penetration Testing

Network and application penetration testing meeting PCI DSS requirements 11.4.1-11.4.5, including segmentation validation.

07

Compliance Validation

QSA-led ROC or SAQ validation depending on your assessment route, producing the documentation acquirers require.

08

Annual Renewal & Continuous Compliance

Year-round programme management to keep controls operational, not just compliant at audit point.

Most clients reach first-time compliance in 3-9 months depending on starting maturity and CDE complexity, with annual renewal cycles thereafter.

What you receive

Every PCI DSS engagement with RedSecLabs includes:

  • Scope analysis and cardholder data environment documentation
  • Merchant level determination and assessment route confirmation
  • Gap analysis report against all 12 PCI DSS v4.0.1 requirements
  • Prioritised remediation roadmap with effort estimates
  • Quarterly ASV scan reports and remediation guidance
  • Annual penetration test report meeting requirements 11.4.1-11.4.5
  • QSA-validated ROC or signed SAQ with attestation of compliance
  • Ongoing compliance management and acquirer reporting support

Industries We Serve

We deliver this service across these industries:

E-commerce
Retail & POS
Payment Providers
Acquirers & Processors
Cloud Hosting
Contact Centres
Travel & Hospitality
Petroleum & Fuel

Why RedSecLabs for PCI DSS

PCI DSS rewards depth, not theatre. Our QSAs and PCI specialists have seen every common scoping mistake, every popular workaround that fails audit, and every remediation pattern that actually works. We deliver assessments that withstand acquirer scrutiny, and a continuous compliance programme that keeps your CDE controls operational year-round.

QSA-led assessments across all merchant levels
Scoping and segmentation expertise (v4.0.1)
ASV-grade quarterly vulnerability scanning
PCI DSS penetration testing to 11.4 standards
Annual renewal and continuous compliance support
Acquirer reporting and dispute support

Confirm Your Service Provider Validation Route

Book a free 30-minute scoping call. Merchant level confirmation, SAQ recommendation, and fixed-fee quote within a week.

Book a Scoping Call Contact Us

Where to next

Related services and industry packages worth exploring.

PCI DSS UK

PCI DSS USA

PCI DSS Saudi Arabia

PCI DSS UAE

E-commerce & Retail package
Related reading

From the RedSecLabs research blog

From the blog

PCI DSS SAQ vs ROC: Choosing Your Compliance Path

Self-assessment questionnaire or formal Report on Compliance, which applies to your merchant level.

Read on the RedSecLabs blog
From the blog

PCI DSS 4.0.1: What Every Business Must Do

The 64 new requirements, what changes from 4.0, and the future-dated deadlines.

Read on the RedSecLabs blog
From the blog

PCI DSS Compliance Costs: 2026 Breakdown

What PCI DSS compliance actually costs across merchant level and environment complexity.

Read on the RedSecLabs blog

Frequently Asked Questions

Not automatically. If your systems never touch cardholder data and cannot affect its security, obligations are minimal, but most platforms retain scope through checkout pages, scripts, webhooks or stored tokens with privileged API access. Under v4.0.1, e-commerce script controls (6.4.3, 11.6.1) apply even to many redirect and iframe architectures. A scoping review answers this definitively.

It is the document mapping each PCI DSS requirement to whether you, the customer, or both are responsible. Your customers' QSAs need it to complete their own assessments; a clear matrix backed by your AOC removes you as a blocker in their audits and shortens sales-stage security reviews.

Level 1 providers need a QSA-assessed ROC. Level 2 providers may self-assess with SAQ D, but enterprise customers increasingly ask for QSA involvement, either a full voluntary ROC or a QSA-validated SAQ. The right route depends on your volumes, card-brand relationships and pipeline; we advise before you commit.

Yes, validated Level 1 service providers can apply to the card brands' registered provider programmes after completing a ROC-based validation. We prepare the submission evidence as part of the engagement.

Shared infrastructure means tenant isolation becomes an assessed control: segmentation between customers, shared-service hardening, and logical access separation all come under testing. v4.0.1 added explicit multi-tenant provider requirements, and we test isolation as part of Requirement 11 work.

It scales with platform complexity, tenancy model, number of in-scope services and evidence readiness. SAQ D validation is materially cheaper than a ROC; both are quoted fixed-fee after scoping.
What you receive

Every engagement includes

  • ✓ Scoping call. A 30-minute call to define scope, timeline, and authorisation boundaries.
  • ✓ Assessment plan. Written plan covering scope, evidence requirements, and assessment schedule.
  • ✓ Findings report. Control-by-control findings with evidence references and remediation guidance.
  • ✓ Executive summary. Board-ready 1-2 page summary with risk ratings and business impact.
  • ✓ Audit-ready evidence. Findings letter formatted for auditors, customers, and supervisory authorities.
  • ✓ Re-verification letter. Remediated gaps re-verified within an agreed window. Confirmation letter included.
  • ✓ Remediation call. A call with our lead assessor to walk through findings and remediation strategy.
How we deliver

Our process, end to end

  1. 1
    Scoping call & fixed-scope quote
    A 30-minute call. We define scope, targets, timeline. You get a fixed-scope quote within one working day. No surprise invoices.
  2. 2
    Assessment plan & authorisation
    Written assessment plan covering scope, evidence requirements and schedule. Authorisation and NDA in place before any work begins.
  3. 3
    Assessor-led execution
    A senior assessor runs the engagement. Material gaps flagged as they are found, not saved for the report. Daily updates if you want them.
  4. 4
    Technical + executive report
    Detailed technical findings with reproduction steps. Board-ready executive summary. Delivered within agreed working days.
  5. 5
    Remediation call & re-verification
    Walkthrough with our lead assessor. Re-verification of remediated gaps within the agreed window. Confirmation letter for your auditors.
Engagement scope

What shapes the quote

Small scope
Single environment, one framework, limited system count. 5-7 working days.
Medium scope
Multiple systems or sites, several control owners, integrations. 8-12 working days.
Enterprise scope
Complex estate, multiple entities or locations, full audit-grade evidence. 12-25 working days.
Fixed-scope quote within 1 working day
No surprise invoices, no scope-creep. We commit to a number before you commit to us.
Sample report
See exactly what we deliver
Download a redacted RedSecLabs report. Same structure, depth and clarity as the deliverables your team will receive.
Download sample report
Why RedSecLabs

Grounded reasons clients choose us

⚑
UK-based team
Testers based in the UK. Data stays within UK/EU jurisdiction for sensitive engagements.
❄
CREST member company
CREST-accredited methodology. Senior testers hold CREST CRT or CCT certifications.
⚙
Practitioners, not checklists
Assessments run by practitioners who also test systems hands-on, findings reflect how controls actually operate.
✎
Clear executive reporting
Reports your board can read and your developers can act on. No jargon padding.
♚
Compliance-aware delivery
PCI, SOC 2, ISO 27001, DORA, GDPR. We map findings to your compliance framework.
↺
Retest support included
Free retest of remediated findings within agreed window. Confirmation letter for auditors.
Related services

Often paired with this engagement

PCI DSS SAQ Assessment →
QSA-verified SAQ and countersigned AOC.
PCI DSS QSA Hub →
All PCI DSS assessment services.
ROC Assessment →
QSA Report on Compliance, end to end.
Scoping & Segmentation →
CDE definition and scope reduction.
PCI DSS QSA (UK) →
Formal QSA assessment in the UK.
PCI DSS QSA (US) →
Formal QSA assessment in the US.
PCI ASV Scanning →
External quarterly scans (via ASV partner).
Network Pentesting →
Required under Requirement 11.
Web App Pentesting →
For payment applications.
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