PayProof · Compliance guide

PCI DSS payment security: what it is, who it applies to & how to comply

Taking cards means PCI DSS obligations. The safe path: never touch raw card data, use a compliant processor, serve everything over HTTPS, never store card numbers, and complete your SAQ.

In force Platform & payments

Does this apply to you?

This rule applies if you accept credit or debit card payments. Accept card payments? Check that card data never touches your server and your checkout is locked down. Not sure? The free checker tells you in about a minute — no signup.

What PCI DSS payment security requires

In practice, PayProof's checker looks at whether you can answer "yes" to each of these. Each one is a place sellers commonly get caught:

What's at stake

⚠️ Exposure: card-network fines $5K–$100K/month (contractual). Status: In force.

Statutory maximums are worst-case ceilings, not a prediction — but they're why this is worth ten minutes now.

Common questions

Do I have to be PCI compliant?

If you accept card payments, yes — every merchant must meet PCI DSS. Using a hosted/tokenized processor (Stripe, PayPal, Shopify) keeps you in the lightest scope (SAQ A).

What's the safest setup for a small seller?

Let a compliant processor handle card data via a hosted or tokenized checkout so raw card numbers never hit your server, serve everything over HTTPS, and never store card numbers or CVV.

What is an SAQ?

A Self-Assessment Questionnaire — an annual attestation of your controls. The version (A / A-EP / D) depends on how your checkout integrates.

The source

RuleGoose checks this against the PCI DSS v4.0 standard. Read it yourself: PCI Security Standards Council →

Check your PCI DSS payment security compliance — free.
Answer a few questions, see exactly where you're exposed, and draft the fix. No signup, runs in your browser. Run the PayProof checker →

or get one RuleGoose Score across every rule that applies to you.

Related guides

Informational only, not legal advice, and not affiliated with the PCI SSC. Last reviewed 2026-06-28.