Can You Claim Crypto Losses in Ireland?

Can you claim crypto losses in Ireland? Yes, a loss can reduce your tax bill, but only once you've actually disposed of the crypto. A loss on a sale or swap is set against your gains in the same year, and any capital loss left over is carried forward to later years. A coin that has fallen in value while you still hold it doesn't count yet.

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.

About this page: Bitcoin.ie is a general information site. We don't sell crypto, hold money for anyone or give personal financial or tax advice, and nothing here is a recommendation to buy. There are no affiliate links on this site today. We may earn a commission from links to some providers in future; if we do, those links will be labelled and explained in our affiliate disclosure, and it won't change what we write.

Tax note: This is general information based on Revenue guidance and the Finance (No. 2) Bill 2026 as published, checked on 30 October 2026. It isn't tax advice. Your position depends on your circumstances, so speak to a tax adviser or Revenue before you file.

Crypto losses in Ireland: the short version

Allowable capital losses are set against gains in the same year first. Any unused amount carries forward to later years. You cannot carry a loss back to an earlier year, except in the year of death.

There are no special loss rules for crypto. Revenue applies the ordinary Capital Gains Tax (CGT) rules, and each case depends on its facts.

This page is about capital losses. If your activity amounts to a trade, income tax rules can apply instead, so speak to a tax adviser if that might be you. For the bigger picture, see our guide to crypto tax in Ireland.

What makes a loss allowable

You need a disposal that produces a loss. If you bought bitcoin for €3,000 and it's now worth €1,800, you have a paper loss. Nothing happens for tax until you dispose of it.

Selling for euro is the obvious disposal. Swapping one crypto for another counts too, as does paying for goods or services in crypto. Revenue's CGT overview also includes gifting an asset and receiving compensation or insurance for it.

Revenue's manual on crypto-asset transactions says selling, transferring or redeeming crypto-assets is most likely a disposal for CGT unless the activity amounts to a trade. The manual says each case depends on its own facts.

Work out each disposal separately

Work out the gain or loss on each disposal before you add anything up. Looking at what your account was worth in January and December won't give you the right answer.

Revenue expects a reasonable effort to use an appropriate valuation, converting to euro at the time of the transaction. That matters when you exchange crypto as well as when you sell it for euro.

Keep records for six years. Revenue says wallet records must be made available if it asks, and you'll want them to back up any loss you claim.

Using a loss: same year first

Revenue's guidance on losses says allowable losses are used against gains in the same year before unused losses carry forward. So you can't save a loss for a later year while you have gains in the same year to use it against.

Example using made-up round numbers

Suppose your separately calculated disposals in one year produce total gains of €5,000 and allowable losses of €2,000. These are invented figures to explain the rule.

The €2,000 loss is set against the €5,000 gains in that year, leaving €3,000 before considering the annual exemption. All of that year's loss has been used, so none of it carries forward.

Now suppose the figures are reversed: gains of €2,000 and allowable losses of €5,000. The losses cover the €2,000 gains, leaving €3,000 of unused losses to carry forward.

These examples show the order the rules apply in. Whether a particular transaction gives you an allowable loss depends on the facts, so speak to a tax adviser if you're unsure.

Carrying capital losses forward

Whatever is left after the same-year set-off carries forward to later years. In the second example, the unused €3,000 is available against future gains. It isn't a refund, and Revenue doesn't pay you anything for it. It only reduces gains you make later.

The order is always the same: work out each disposal, set losses against that year's gains, then carry forward what's left. You need to file a return for the loss year to claim it.

Losses go forwards, not backwards. A loss this year can't reduce tax you paid on gains in an earlier year. Revenue's one exception is the year of death.

The €1,270 exemption and losses

Everyone gets a CGT exemption of €1,270 a year. It can reduce a gain, but it can't create or increase a loss, so you can't carry forward unused exemption.

In the first example above, the €3,000 remaining after losses is still a gain before the exemption is considered. In the second example, the exemption cannot add to the €3,000 unused loss.

The rate also depends on when the disposal happened. Revenue applies 31% to most gains on disposals made on or after 7 October 2026. The rate took effect through a Budget 2027 financial resolution and is in the Finance (No. 2) Bill 2026, which had not been enacted when we checked on 30 October 2026. Disposals before 7 October 2026 are taxed at 33%.

Spouses and civil partners

Revenue says losses can, in some cases, be transferred between spouses or civil partners. The conditions depend on how you're assessed for tax, so speak to a tax adviser before you rely on a partner's losses.

Reporting a loss

To claim a loss, you file a return for the year you made it. Revenue requires a return even when losses or the exemption mean there's no tax to pay.

Revenue's paying and filing guidance separates payment dates from the return deadline:

• Disposals from 1 January to 30 November: CGT is payable by 15 December of the same year.
• Disposals from 1 to 31 December: CGT is payable by 31 January of the following year.
• The return: File by 31 October of the year after the disposal, even if no tax is due.

For 2026 disposals, the return is due by 31 October 2027. There is no change to the CGT payment and filing dates for those disposals. Late payment means interest; late filing means a late filing surcharge or penalty.

Which return applies?

Revenue lists Form CG1, a paper form, if you do not normally file a return, meaning you have neither a PAYE nor a self-assessed income tax return. It lists paper Form 12 for PAYE taxpayers. Revenue's page says you cannot report CGT on the online Form 12 in myAccount.

Form 11 applies if you are self-employed or have non-PAYE income, and is filed through ROS. Revenue also says to register for CGT in myAccount or ROS if you are not already registered for income tax self-assessment.

For help understanding the reporting process, see how to pay crypto tax in Ireland. Speak to a tax adviser if you are unsure which return fits your circumstances.

Lost keys, failed platforms and scams

This comes up a lot, and the honest answer is that the Revenue pages we checked on 30 October 2026 don't set out how crypto lost through forgotten keys, a collapsed platform or a scam is treated. We won't guess. Losing access to crypto isn't obviously the same thing as disposing of it, so speak to a tax adviser before you claim a loss for any of these.

If you think you've been scammed, the tax question can wait. Contact your bank and the Gardaí first. Our guide to crypto scams in Ireland covers what to do.

Frequently asked questions

Can you claim crypto losses in Ireland?

You can claim allowable capital losses, with losses set against gains in the same year first and unused losses carried forward. You need to file a return for the year to claim the loss, even if no tax is due.

Does a fall in crypto prices count as a loss?

Not on its own. A fall in the value of crypto you still hold isn't a disposal. The loss only arises for tax when you sell, swap or otherwise dispose of it.

Can crypto losses reduce gains from an earlier year?

Losses cannot be carried back to earlier years, except in the year of death. Unused allowable losses instead carry forward to later years. Speak to a tax adviser if the exception may apply to your circumstances.

Does the annual exemption increase my loss?

No. The €1,270 annual exemption per person can reduce a gain, but it cannot create or increase a loss. It does not add to the unused allowable losses you carry forward.

Do I need to report a loss if I owe no tax?

Yes. You still need to file a return to claim the loss, and Revenue requires a return even if no tax is due. The filing deadline is 31 October of the year after the disposal.

Are scam losses automatically allowable for tax?

The Revenue pages we checked don't say so. For scams, lost keys or failed platforms, speak to a tax adviser about your own circumstances.