Crypto Wallets in Ireland: Hot, Cold and Self-Custody

A crypto wallet in Ireland can be an account with an exchange, an app on your phone or a cold wallet, such as a small hardware device that keeps your keys offline. The question that matters most is who holds the keys. With a hosted wallet, a company holds them and you trust it to keep them safe. With self-custody, you hold them yourself, and if you lose them, nobody can get them back for you.

Risk warning: Crypto-assets such as bitcoin are high risk and speculative. Their value can go down as well as up, sometimes sharply, and you could lose all the money you put in. Past performance doesn't necessarily give a guide to the future. Some crypto products and services are unregulated, and even under MiCA crypto is not covered by the Deposit Guarantee Scheme or the Investor Compensation Scheme. Crypto isn't suitable for everyone, so only use money you can afford to lose.

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What a bitcoin wallet actually holds

The name is a little misleading. Your bitcoin doesn't sit inside the wallet. It's recorded on the blockchain, and the wallet holds the keys that let you use it.

There are two kinds of key. The CCPC compares the public key to an account number: you can share it so people can send you crypto. The private key is the secret code that proves the crypto is yours and lets you move it. Anyone who has it can spend your bitcoin.

If you lose the private key, the CCPC says no one, not the platform and not the regulator, can recover it. So choosing a wallet isn't just about which app looks easiest. It's about deciding who you trust to look after access: a company, or yourself.

Hosted or self-custody

You'll see several names for the same two options. A hosted or custodial wallet is run by a company, usually the exchange you bought from. An unhosted, non-custodial or self-custody wallet means you hold the keys.

Most people start with a hosted wallet without really choosing one: when you buy through an exchange, it holds the bitcoin for you. That's simpler, but you depend on the firm. With self custody, you keep the keys in an app or on a device and you're responsible for keeping the backup safe. The CCPC describes self-custody as better suited to experienced users.

Neither option protects you from price falls. If you haven't bought yet, our guide to how to buy bitcoin in Ireland explains the steps.

Hot wallet vs cold wallet

Hot and cold is a separate question from who holds the keys. It's about whether the keys are online. A hot wallet is connected to the internet: a phone app, a desktop app or an exchange account. Cold storage keeps the keys offline, usually on a hardware wallet, a small device built for the job.

Keys kept offline are harder for someone to reach over the internet, which is the main appeal of cold storage. A hot wallet is handier for day-to-day use but more exposed to hacking and phishing.

A hardware wallet doesn't make you safe on its own. You still have to protect the backup, because anyone who finds it can rebuild your wallet on another device. If you do buy one, get it from the maker's official site or an authorised seller rather than a marketplace listing, and read the maker's backup guidance before you put anything on it.

Leaving bitcoin with an authorised provider

If you leave your bitcoin with an exchange, it should be a firm authorised under MiCA, the EU rules for crypto service providers. It can be authorised in Ireland or in another EU country and passported here. ESMA's interim MiCA register shows authorised providers and the countries they serve, and our guide to MiCA-licensed crypto exchanges for Ireland has three we checked on 30 October 2026.

When an authorised crypto-asset service provider, or CASP, holds crypto for you, MiCA Article 75 requires specific custody arrangements:

• Written agreement: The provider must have a written agreement with you.
• Position records: It must keep a register of each client's positions and provide a statement at least every three months.
• Separation of assets: Client crypto must be separated from the provider's own assets, legally and on the ledger, so its creditors have no claim on client crypto in insolvency.
• Liability for losses: It is liable for losses from incidents attributable to it, capped at market value at the time of loss.

These are real protections, especially the separation of assets if a firm goes bust. They aren't a guarantee against every loss. You can read the custody requirements in MiCA Article 75.

Crypto still has no Deposit Guarantee Scheme or Investor Compensation Scheme cover. And if you put your bitcoin into a lending or staking-type product, check whether it's covered at all, because ESMA warns that authorised firms can also offer products outside MiCA.

Looking after your own keys

Self-custody wallets give you a backup, usually a list of words called a recovery phrase. It's the master key: with it, anyone can restore your wallet and take what's in it. Trezor's wallet backup guidance is a good model of the rules most makers give:

• Trezor will never ask for your recovery phrase.
• Only enter it when your own device prompts you, never on a website or in a form.
• Don't make digital copies: no screenshots, photos, emails or cloud storage.
• Scammers pose as support staff on social media, so ignore anyone offering help who asks for it.

Follow the instructions for whichever device you use.

The European Supervisory Authorities advise keeping devices and software updated, using strong, unique passwords and avoiding public Wi-Fi for crypto accounts. The CCPC adds that phishing and fake apps are a common route to wallet and account takeovers, so download wallet apps only through the official app stores or the maker's own site. Our guide to crypto scams in Ireland covers the common tricks.

Moving bitcoin between wallets

A bitcoin transfer to the wrong address usually can't be reversed, as the CCPC warns. Check the address carefully before you confirm, ideally by comparing the first and last several characters. Many people send a small test amount first, especially the first time they move bitcoin to a new wallet. Bear in mind that each transfer can cost a network fee.

On tax, Revenue's crypto manual doesn't specifically deal with moving crypto between your own wallets. Keep a record of each transfer anyway, so you can show it was your own money moving and not a sale. Our guide to crypto tax in Ireland covers what does count as a disposal.

If your provider loses its authorisation

Since 1 July 2026, every MiCA transitional period in the EU has ended, so any provider serving EU customers needs MiCA authorisation. If yours isn't on the register, the Central Bank's advice is to check the ESMA register and consider moving your crypto to an authorised provider or a self-hosted wallet. If you choose self-custody, the keys and backup become your job.

Do the move yourself from inside the provider's own app or website. Be wary of anyone who contacts you offering to help. Our guide to MiCA in Ireland has more on authorisation.

Records for Revenue

Revenue's manual says that where your records are stored in a wallet on a computer, phone or similar device, you must make them available to Revenue on request, and that records must be kept for six years. Keep a note of what you bought, when, for how much and from where, plus any transfers between wallets.

Download your exchange statements and transaction history regularly too, rather than relying on being able to log in years from now. For related guidance, see how to pay crypto tax in Ireland. Speak to a tax adviser where your tax position depends on your circumstances.

Frequently asked questions

Does a bitcoin wallet contain my bitcoin?

A wallet stores the keys to your crypto. The crypto sits on the blockchain, and the private key proves ownership and authorises movements.

What is the difference between a hot wallet and a cold wallet?

A hot wallet is connected to the internet, such as a phone app or exchange account. Cold storage keeps keys offline, often through a hardware wallet.

Can a regulator recover a lost private key?

No. If you lose the private key, neither a platform nor a regulator can recover it. Losing private keys means permanent, irreversible loss.

Does MiCA give my bitcoin deposit protection?

No. Crypto has no Deposit Guarantee Scheme or Investor Compensation Scheme cover. MiCA includes custody protections for authorised providers, but you can still lose money.

Is moving bitcoin between my own wallets a disposal?

Revenue's crypto manual doesn't specifically address it. Keep a record of every transfer, and speak to a tax adviser if you're unsure how it affects your position.

How long must I keep wallet records?

Six years. Revenue's manual says records must be kept for six years, and records stored in a wallet on a device must be made available to Revenue on request.