GDPR compliance cost for a business app in Amsterdam in 2026

The verdict in three sentences

Bringing a business app into GDPR compliance in Amsterdam costs in 2026 between 8,000 and 20,000 EUR of project work (mapping, records, encryption, consent), plus an outsourced DPO at 400-900 EUR/month. The trigger is simple: processing personal data without a clear legal basis exposes you to a fine of up to 4% of annual global revenue or 20M EUR. The 10 priorities below turn a fuzzy legal risk into a budgeted roadmap.

The 10 work streams and their 2026 cost

Compliance is not a document, it is a technical and organizational chain. Here are the line items observed in Amsterdam.

Indicative total: 19,000 EUR for a full scope, often 8,000-12,000 EUR if the app starts from a clean base.

The quantified risk: fine vs compliance

An app storing customer data with no purge, no encryption and no register is a time bomb in case of a regulator inspection or breach. Comparison.

European regulator sanctions in 2024-2025 targeted SMEs for 20,000 to 150,000 EUR: proactive compliance stays far cheaper.

Mini case study

Nadia, CFO of a 60-person HR services SME in Amsterdam, runs an internal app storing CVs, payslips and health data with no documented legal basis. She budgets mapping (2,500 EUR), the register (1,500 EUR), encryption and consent (4,000 EUR), data subject rights (2,500 EUR) and a DPIA (3,000 EUR), totaling 13,500 EUR. She adds an outsourced DPO at 600 EUR/month.

Risk math: her revenue is 4.2M EUR, so the theoretical maximum fine reaches 168,000 EUR. Even a "moderate" 40,000 EUR sanction is 3x the cost of the full project. Compliance pays for itself at the first avoided inspection, and unlocks two public tenders that required it.

FAQ

How long does compliance take? Expect 4 to 8 weeks for a medium business app: 2 weeks of mapping and analysis, then 2 to 6 weeks of development (encryption, consent, rights, purge).

Must I appoint a DPO? A DPO is mandatory for the public sector and for large-scale sensitive data processing. Otherwise it remains strongly recommended: an outsourced DPO at 400-900 EUR/month prevents costly mistakes.

What happens if I do nothing? You risk a fine of up to 4% of revenue, but above all an emergency remediation 2 to 3 times more expensive in case of inspection or breach, plus B2B trust damage that is hard to repair.

Is encryption enough to be compliant? No. Encryption is one of ten work streams. Without a register, legal basis, rights handling and retention policy, an encrypted app is still non-compliant and sanctionable.

Is a DPIA always required? No, only for high-risk processing (health data, surveillance, large scale). It costs around 3,000 EUR and documents the measures taken, which strongly protects you during an inspection.

Let's scope your project. Tell us the nature of the data processed, the number of users and your deadline (tender, inspection, rework): we'll prioritize the 10 work streams to your real risk. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.