CASP Passporting: What It Unlocks - And What It Doesn’t

If you work in crypto in Europe right now, “MiCA” and “CASP passporting” are probably the phrases you hear at every conference coffee break.

On paper, it sounds like the dream: get one licence in one EU country, and suddenly you can serve clients all across the European Economic Area. In practice, CASP passporting is powerful - but it’s not a magic golden ticket. There are real limits, political tensions and grey areas you can’t ignore.

This article walks through what CASP passporting under MiCA actually gives you, what it definitely doesn’t, and what founders and compliance teams should be planning for in 2025 and beyond.

Quick refresher: what is a CASP under MiCA?

Under the EU’s Markets in Crypto-Assets Regulation (MiCA), a Crypto-Asset Service Provider (CASP) is any legal person whose business is to provide one or more crypto-asset services to clients on a professional basis. That definition sits in Article 3(1)(15) of MiCA and is picked up by national regulators like the Luxembourg CSSF in their CASP guidance.Crypto-Assets Service Providers – CSSF

MiCA itself is an EU regulation (Regulation (EU) 2023/1114) that sets harmonised rules for crypto-assets that weren’t already covered by existing financial-services law. It covers issuers of significant tokens and, crucially here, the CASPs that run exchanges, custody services, trading platforms, portfolio management and so on.ESMA – Markets in Crypto-Assets (MiCA)

The “CASP part” of MiCA entered into application on 30 December 2024, meaning that from that date crypto-asset service providers in the EU started moving into the new regime.Dechert – Application of second part of MiCA

Passporting in the EU: the basic idea

The EU has used passporting for years in banking, payments and investment services. The logic is simple:

• get authorised in one Member State (your “home” country),
• then notify your supervisor that you want to serve clients in other EU/EEA states,
• and operate there without getting a separate full licence in each country.

MiCA copies that logic for CASPs.

The Central Bank of Ireland’s MiCA FAQ spells it out clearly: a CASP authorised in one Member State may provide crypto-asset services on a cross-border basis across the EU, once it submits complete information to its home national competent authority (NCA) about which countries and which services it plans to offer.Central Bank of Ireland – MiCAR FAQ Central Bank of Ireland

So yes: in principle, MiCA gives CASPs an EU-wide passport similar to what payment institutions or investment firms enjoy under earlier directives.

But the details really matter.

What CASP passporting actually unlocks

Let’s start with the good news. Done right, a MiCA CASP licence + passporting can unlock a lot.

1. One licence, many markets

Once you’re fully authorised as a CASP in one EU country and you’ve notified your home regulator of your cross-border plans, you can serve clients in all other EU/EEA Member States - without having to obtain a separate CASP licence in each of them.

The European Commission’s MiCA implementation page stresses that MiCA is designed as a single, harmonised framework for crypto-asset services across the EU, with detailed rules fleshed out by delegated and implementing acts.European Commission – MiCA implementing and delegated acts European Commission Finance

For a serious crypto exchange, broker or custody provider, that’s huge: fewer licences, fewer duplicated processes, one core compliance framework.

2. A clearer route to EU-wide scaling

Instead of stitching together 10+ national registrations, MiCA gives you a single set of rules on:

• authorisation and supervision,
• conduct of business,
• safekeeping of client assets,
• complaints handling,
• governance and internal controls.

ESMA’s MiCA page emphasises that one of the regulation’s main goals is to replace the old patchwork of national regimes with common EU-wide rules on transparency, disclosure and supervision.ESMA – Markets in Crypto-Assets (MiCA)

That makes life easier both for firms and, frankly, for supervisors who had been dealing with wildly different local frameworks.

3. No physical branch in every country (in many cases)

MiCA doesn’t generally force a CASP to open a physical office in each host country just to serve clients there cross-border. National guidance, like Polish law firm and regulator commentary, confirms that CASPs can often provide services across borders without a physical presence in each host Member State, as long as they’re properly authorised and passported from their home state.

For lean, digital-native businesses, that’s a big practical win.

4. A regulated “badge” - if you use it honestly

Once MiCA is fully bedded in, being a passported CASP will signal to partners, banks and customers that:

• you’re under prudential and conduct supervision,
• you follow harmonised consumer-protection rules,
• you meet governance and competence standards for key staff.

ESMA and the EBA have already been publishing Level-2 and Level-3 measures (regulatory technical standards and guidelines) to flesh out what that means in practice for CASP procedures, policies and staff knowledge.ESMA – MiCA Level 2 and 3 measures (overview)

Used correctly, this can be a trust signal. Used cynically, it becomes a regulatory landmine - more on that below.