--- title: "KYC Integration for Hungarian Fintech 2026" description: "Which KYC providers work in Hungary, what MNB actually requires, where SumSub, Onfido and Stripe Identity differ, plus 4 integration anti-patterns to avoid." date: 2026-04-20 updated: 2026-04-20 author: "Dezső Mező" tags: "Fintech, KYC, MNB, Compliance, Payment, fintech, payments, mnb, kyc" slug: kyc-integration-hungarian-fintech-2026 canonical: https://dfieldsolutions.com/blog/kyc-integration-hungarian-fintech-2026 --- # KYC Integration for Hungarian Fintech 2026 Practical KYC integration for EU + Hungarian fintech · provider comparison, MNB requirements, and the integration mistakes we won't repeat. KYC on paper: collect ID, check liveness, run sanctions screen, done. KYC in practice for a Hungarian fintech: which provider is MNB-compatible? What does the audit actually want to see? Why did the SumSub integration fail four months in? This post is the version I wish I'd read before our first fintech KYC project. ## What MNB actually audits Hungarian National Bank (MNB) fintech supervision looks at three things on KYC: the risk-scoring logic (and whether it's documented), the chain of evidence (can you reproduce a given customer's onboarding flow from logs?), and the escalation path (when does a flagged customer stop being self-service?). > **NOTE:** MNB doesn't certify KYC providers · they audit how you use one. Picking a 'pre-certified' vendor means nothing if your integration is sloppy. ## Provider comparison · 2026 ### SumSub Best Hungarian document coverage (old format ID, new eID chip read, magyar nyelv the interface). The UI is solid, the webhook reliability is not · expect to build a reconciliation loop. Pricing scales badly past ~5k onboardings/mo. Our default choice for Hungary-first fintech. ### Onfido Cleaner API, better SLAs, worse Hungarian document coverage (the older ID variant misses more often). Pricing is predictable. Default choice when the core market is EU-wide, not Hungary-only. ### Stripe Identity If you're already Stripe for payments, this is seductive. It works · but the risk-scoring customisation is limited. MNB audit fine on paper; in practice, if you need non-standard escalation rules, you'll outgrow it. ## Integration anti-patterns (we ate these) 1. Trusting the provider's `status: approved` without re-running it on your end. A webhook can be spoofed; always verify with an API call server-side before granting access. 2. Storing the KYC result as a boolean. MNB wants to know WHY · persist the risk vector (score, flags, documents verified), not just pass/fail. 3. Assuming document OCR data matches sanctions-screening data. Normalize names · Hungarian characters, diacritics, maiden names all cause hits to miss or false-positive. 4. No versioning on risk-scoring logic. When MNB asks 'why was this customer approved six months ago', you need the scoring rules that were live that day, not the ones now. ## Payment gateway parallel KYC is coupled to payment onboarding. SimplePay (OTP) is the Hungarian default and has its own merchant KYC layer. Stripe + Barion + Revolut Business handle it differently. For EU SEPA + card, Stripe is the least-friction · for HUF-first consumer, SimplePay integration plus manual Stripe fallback is the pattern we ship most. > **TIP:** If you're pre-launch, talk to MNB's fintech supervision desk before you pick your KYC provider. Their pre-clearance takes 4-6 weeks but saves 6 months of rework if your scoring logic doesn't meet their expectations. --- Source: https://dfieldsolutions.com/blog/kyc-integration-hungarian-fintech-2026 Author: Dezső Mező · Founder, DField Solutions Site: https://dfieldsolutions.com