SOC 2 vs PCI DSS: Which Framework Does Fintech Need?

By Editorial team · Published 2026-04-22 · Last updated 2026-04-22

Fintech founders face a common framework question: SOC 2, PCI DSS, or both? The answer depends on whether you touch cardholder data.

The SOC 2 vs. PCI DSS question has a cleaner answer than most framework comparisons: PCI DSS is mandatory if you store, process, or transmit cardholder data. SOC 2 is voluntary but expected by enterprise B2B buyers regardless of payment processing involvement. If you're building fintech infrastructure, you very likely need both — the question is timing and how to run them without doubling your compliance workload.

What each framework governs

PCI DSS (Payment Card Industry Data Security Standard) is maintained by the PCI Security Standards Council and is contractually required by card brands (Visa, Mastercard, American Express, Discover) for any entity in the payment chain. PCI DSS v4.0 organizes requirements across 12 control domains: network security, cardholder data protection, vulnerability management, access control, monitoring, and information security policy. Validation level depends on annual transaction volume — SAQ (self-assessment questionnaire) for lower-volume merchants, ROC (Report on Compliance) audited by a Qualified Security Assessor (QSA) for Level 1 merchants.

SOC 2 is an AICPA attestation framework based on the Trust Services Criteria. It is not a legal requirement; enterprise buyers request it as third-party evidence of security practices. The Security TSC is almost always in scope; Availability and Confidentiality are common additions for SaaS infrastructure companies.

The decision rule for fintechs

• You store, process, or transmit PANs (primary account numbers): PCI DSS compliance is non-negotiable. You also need SOC 2 if you sell to enterprise B2B customers.
• You use a payment processor (Stripe, Braintree, Adyen) and never touch PANs: PCI DSS scope may reduce to SAQ A or SAQ A-EP. SOC 2 is still expected by enterprise buyers.
• You're a payments infrastructure provider (card issuing, ACH, ledgering): PCI DSS Level 1 ROC is required. SOC 2 Type II is expected by your downstream fintech clients who need it to satisfy their own buyers.
• You're a B2B SaaS fintech with no payment processing (lending analytics, financial data, treasury management): PCI DSS likely doesn't apply. SOC 2 is the primary enterprise requirement.

Running a joint SOC 2 + PCI DSS program

The control overlap between SOC 2 Security TSC and PCI DSS is substantial — roughly 60% of PCI DSS requirements touch controls that a SOC 2 Security engagement also tests. Access management, logging and monitoring, encryption, change management, and vulnerability scanning are common to both. The practical implication: a combined program costs less than running two independent audit programs.

1. Scope definition: Define your cardholder data environment (CDE) for PCI DSS and your SOC 2 system description simultaneously. The overlap in scope boundary documentation saves 2–4 weeks of prep.
2. Control mapping: Use a GRC platform (Vanta, Hyperproof, Drata, or Secureframe) to cross-map controls. Most major platforms ship a PCI DSS + SOC 2 dual-mapping template.
3. Auditor selection: SOC 2 auditors are AICPA-licensed CPAs; PCI DSS QSAs are PCI SSC-certified. These are different licenses — one firm can hold both, but not all do. If you want a single firm for both, verify QSA credentials explicitly.
4. Evidence sharing: Network diagrams, penetration test reports, and access reviews generated for PCI DSS satisfy overlapping SOC 2 evidence requirements. Request that your GRC platform evidence tagging supports both frameworks.
5. Timing: PCI DSS ROC engagements typically run annually and are tied to your card brand agreement. Time your SOC 2 observation period to end within 60 days of your ROC completion so evidence overlaps maximally.

Auditor recommendations for fintech dual programs

Running a combined SOC 2 + PCI DSS program requires an auditor with both AICPA license and QSA certification, or two firms working in coordination. Schellman holds both credentials and is one of the few firms in the market that can issue a combined SOC 2 + PCI DSS attestation under a single engagement. A-LIGN also holds QSA certification alongside its SOC 2 practice. For boutique-priced alternatives, verify QSA status directly with the auditor — it's not a universal credential in the SOC 2 boutique market.

Budget for a combined first-year program: $30K–$80K depending on transaction volume, CDE complexity, and whether you require Level 1 ROC or SAQ. Annual renewals for an established program typically run 40–60% of initial year cost.

The scope question that trips up fintech founders

Fintechs often assume that because they use Stripe, Braintree, or Adyen as their payment processor, they have no PCI DSS obligations. This is partially correct — using a PCI-compliant payment processor significantly reduces your PCI DSS scope. But it doesn't eliminate it. If your application renders a payment form, stores any payment metadata, or has access to transaction data through the processor's API, you still have a residual PCI DSS scope that needs to be defined and validated. The SAQ D (for e-commerce merchants) or SAQ A-EP (for redirect-based payment pages) covers this residual scope. Ignoring the scope determination entirely and assuming 'Stripe handles it' is the most common PCI compliance mistake in early-stage fintech.

Your banking partner or card network will perform their own assessment of your PCI DSS status if you're in the payment chain. The determination isn't self-certifying — it requires documented evidence. Work with a QSA or PCI Internal Security Assessor (ISA) to confirm your scope and appropriate SAQ level before your first banking partner review.

Building a compliance evidence library that serves both frameworks

The shared control surface between SOC 2 and PCI DSS is your greatest efficiency lever. Policies, procedures, and technical evidence that satisfy one framework often satisfy the other with minor adaptation. Build your evidence library with dual tagging from the start: every policy document, network diagram, access review, and penetration test result should reference both the PCI DSS requirement and the SOC 2 TSC control it satisfies. GRC platforms that support PCI DSS and SOC 2 dual frameworks (Vanta, Hyperproof, Secureframe) generate this mapping automatically. Auditors for both programs should be briefed on this shared library to avoid requesting duplicate evidence packages that consume engineering and IT time twice.