How much does it cost to integrate EUDI Wallet acceptance into an existing platform?

Integrating EUDI Wallet acceptance into an existing platform typically costs between €20,000 and €150,000 in total, depending on the complexity of your current systems, the number of use cases you want to support, and the compliance work required. Organizations in regulated sectors such as financial services, healthcare, and government tend to sit at the higher end of that range. The sections below break down exactly where those costs come from and how to keep them manageable.

What factors drive the cost of EUDI Wallet acceptance?

The cost of EUDI Wallet acceptance is driven by four main variables: the state of your existing identity infrastructure, the number of use cases you need to support, the compliance obligations that apply to your organization, and whether you build the technical layer yourself or connect through a ready-made integration. Each of these can shift your budget significantly in either direction.

Organizations that already run modern, API-based identity systems will spend less than those working with legacy platforms that require significant rearchitecting before any wallet connection is possible. Similarly, an organization that only needs to verify identity at onboarding faces a much simpler integration than one that also wants wallet-based login and qualified signing within the same session.

Regulatory obligations add another layer. Under CIR (EU) 2025/848 of 6 May 2025, relying parties must register with a national authority before they can request wallet data. That registration process and the ongoing compliance work it requires carry their own costs. The private sector deadline under article 5f of eIDAS 2.0 is 24 December 2027, which gives most organizations time to plan, but the earlier you start, the more flexibility you have to spread costs across budget cycles.

What is a realistic budget range for EUDI Wallet integration?

A realistic budget for EUDI Wallet integration ranges from roughly €20,000 for a straightforward connection to a modern platform with a single use case, up to €150,000 or more for a multi-use-case implementation on a complex or legacy system. Most mid-sized organizations in regulated sectors should plan for somewhere between €40,000 and €80,000 when accounting for technical integration, compliance, and testing.

These figures cover the full scope of work, not just the software connection. They include internal development time, legal and compliance review, registration with a national authority, security testing, and the ongoing operational costs of maintaining the integration as technical specifications evolve. Organizations that underestimate the compliance and legal portion often find their budgets stretched in the final stages of a project.

It is also worth noting that the ID Connector model, where a single integration covers all certified European wallets and other identity methods, reduces the technical portion of this budget compared to building wallet-specific connections one by one. That said, the compliance and registration costs remain the same regardless of the integration approach you choose.

How does EUDI Wallet integration compare to traditional identity verification costs?

EUDI Wallet integration has a higher upfront cost than most traditional identity verification setups, but the ongoing operational costs are generally lower. Traditional verification methods, such as document scanning, knowledge-based checks, or video identification, carry per-transaction fees that accumulate over time. Wallet-based verification shifts more of the cost to the initial integration and reduces per-verification overhead.

There is also a quality difference worth factoring into the comparison. The EUDI Wallet is issued at the highest assurance level, meaning the identity data it carries has been verified to a standard that most existing methods do not reach on their own. For organizations in sectors where strong user authentication is legally or contractually required, this matters: a wallet-based verification may replace several separate checks that currently run in sequence.

Qualified signing is another area where the wallet changes the cost picture. A qualified electronic signature currently requires a high-assurance identity check as a separate step. When identity is already established through the wallet, signing can happen in the same session, which removes a process step and the cost associated with it. Organizations in financial services and healthcare that rely heavily on signed documents will find this consolidation meaningful over time.

Which technical components require the most investment?

The technical components that consume the largest share of the integration budget are trust management, protocol implementation, and testing across multiple wallet solutions. These three areas together typically account for more than half of the total technical cost.

Here is where the investment tends to concentrate:

• Trust management: Verifying a wallet presentation involves three separate checks: the issuer’s signature against the national trusted list, the revocation status of the attestation, and the wallet unit attestation confirming the presenting wallet runs on a certified wallet solution. Building and maintaining this verification logic is non-trivial.
• Protocol implementation: The ARF (Architecture and Reference Framework, currently at version 3.0.0) specifies OID4VP for presentation and OID4VCI for issuance, with credential formats in mdoc (ISO/IEC 18013-5 for proximity, ISO/IEC TS 18013-7 for online) and SD-JWT VC. Implementing these correctly and keeping up with revisions takes sustained engineering effort.
• Multi-wallet testing: The eIDAS 2.0 framework requires relying parties to accept every certified European wallet, not just one. Testing your integration against wallets from multiple member states adds time and cost that is easy to underestimate.
• Scope enforcement: Under CIR (EU) 2025/848, a relying party must register exactly which attributes it will request per intended use. The wallet checks every request against that registered scope and stops the presentation if the request exceeds it. Building this scope enforcement into your integration correctly from the start avoids costly rework later.
• Session and data handling: Verified identity data needs to flow into your existing business processes, whether that is onboarding, authentication, or signing. Connecting the wallet layer to downstream systems is often where hidden complexity emerges.

What compliance and legal costs should organizations budget for?

Compliance and legal costs for EUDI Wallet acceptance typically run between €10,000 and €30,000, covering registration, data protection review, and ongoing monitoring. These costs are separate from the technical integration and are often underbudgeted, particularly by organizations that treat wallet acceptance as a purely technical project.

The main compliance obligations to budget for are:

1. Relying party registration: Under CIR (EU) 2025/848, your organization must register with a national authority in your member state of establishment before you can request wallet data. The registration specifies exactly which attributes you will request per use case. Legal review of that scope and the process of completing registration carry a cost.
2. GDPR alignment: The approval a user gives in the wallet is not the same as consent under article 6(1)(a) GDPR. Your organization needs its own legal basis for processing the data it receives. For most regulated sectors, that basis is a legal obligation rather than consent, but it needs to be documented correctly.
3. Attribute scope governance: Requesting more attributes than registered is an explicit ground for revocation of your registration. Building internal governance to ensure your requests stay within scope, and reviewing that scope when your use cases change, is an ongoing compliance cost.
4. Monitoring regulatory updates: The eIDAS 2.0 framework is still producing implementing acts in 2026. Staying current with changes to technical specifications and legal requirements requires either internal capacity or external support.

Organizations in government and highly regulated private sectors should also factor in any sector-specific requirements that interact with wallet acceptance, such as the new AML regulation (AMLR), which applies from July 2027, five months before the private sector acceptance deadline.

How can organizations reduce EUDI Wallet integration costs?

Organizations can reduce EUDI Wallet integration costs primarily by using a pre-built integration layer rather than building wallet connectivity from scratch, by starting the compliance process early, and by scoping their initial use cases tightly before expanding. Each of these decisions can cut both time and budget significantly.

The most impactful cost reduction comes from avoiding a custom build of the trust management and protocol layers. These components require deep technical knowledge of the ARF, the credential formats, and the verification logic, and they need to be updated as specifications evolve. A pre-built integration that handles these layers means your engineering team focuses on connecting the wallet layer to your existing systems rather than rebuilding what already exists.

Starting the registration process early also reduces cost. Registration under CIR (EU) 2025/848 requires careful scoping of which attributes you will request. Organizations that define this scope clearly from the start avoid the legal and technical rework that comes from registering too broadly or too narrowly and then needing to revise.

Finally, beginning with one or two well-defined use cases, such as onboarding identification or wallet-based login, keeps the initial integration manageable and generates real operational experience before you expand to qualified signing or cross-border scenarios. This phased approach spreads costs across budget cycles and reduces the risk of expensive rework.

How the ID Connector helps with EUDI Wallet integration costs

The ID Connector is an integration that lets relying parties accept every certified European wallet, whatever member state issued it, for identification, login and qualified signing. EUDI Wallet acceptance comes first; the same interface also carries other IDs, such as national eIDs, bank IDs and identity documents, inside and outside the EU.

For organizations managing integration costs, the ID Connector addresses the most expensive technical components directly:

• Trust management, including signature verification against national trusted lists, revocation status checks, and wallet unit attestation validation, is handled by the connector rather than built by your team.
• One interface covers all certified European wallets, removing the need to test and maintain separate connections per wallet solution.
• Verified identity data flows into your existing business processes for identification, login, and qualified signing, with the option to reuse verified data across interactions in the same session.
• The integration keeps pace with evolving ARF specifications and implementing acts, so your team does not carry the cost of tracking and implementing regulatory updates to the technical layer.

Organizations in financial services, healthcare, pharmaceuticals, and government use the ID Connector to bring wallet acceptance into production without rebuilding their identity infrastructure. Contact TrustTech to discuss what integration looks like for your platform and your use cases.