Crypto tax rules vary by country, and this page is not tax advice. It covers the principles most tax authorities apply, which are more consistent than people expect. In most countries, crypto is treated as property rather than currency, so selling, swapping, or spending it can trigger a taxable gain or loss. Reporting tightened sharply in 2026, with the EU's DAC8 regime requiring exchanges to collect transaction data from 1 January.
The principle behind most crypto tax rules
Property, not money.
Because most tax authorities classify crypto as property, every disposal is potentially a taxable event. Selling for fiat is the obvious one. Swapping one token for another is usually another, since you disposed of the first token. Spending crypto on goods is a third. Each is treated as though you sold the asset for its market value at that moment.
That framework is why frequent traders generate far more reporting than they expect, and why a swap that never touched fiat can still carry a tax bill.
What usually counts as a taxable event
| Action | Typically taxable? | Why |
|---|---|---|
| Selling crypto for fiat | Yes | Disposal at market value |
| Swapping one crypto for another | Yes, in most jurisdictions | Disposal of the first asset |
| Spending crypto on goods or services | Yes | Disposal at the value of what you bought |
| Receiving staking or mining rewards | Usually, as income | New assets received |
| Receiving an airdrop | Frequently, as income | New assets received |
| Buying crypto with fiat | No | Acquisition, not disposal |
| Moving crypto between your own wallets | No | No change of ownership |
| Holding through a price change | No | Unrealised until disposed |
Treatment differs by country, and several jurisdictions have exemptions, thresholds, or holding-period rules that change the outcome. Check your own.
Cost basis, which decides the number
The gain or loss on a disposal is the difference between what you received and what you originally paid, called the cost basis.
Where you bought the same asset at several prices, jurisdictions differ on which purchase you are deemed to be selling. Some require first-in-first-out. Some allow specific identification. Some use an average cost. The method can change the tax bill substantially on the same trades, which is why record keeping matters more in crypto than almost anywhere else.
Income vs capital
Two categories, taxed differently in most systems.
Capital gains arise from selling or swapping an asset you held. Many jurisdictions tax these at lower rates than income, sometimes with reduced rates for longer holding periods.
Income arises from receiving new assets: staking rewards, mining rewards, airdrops, payment for work in crypto. Usually taxed at the value received on the day, at ordinary income rates.
An asset received as income then later sold generates both: income on receipt, and a capital gain or loss on the sale measured from the value at receipt.
Why 2026 changed reporting
Exchanges now report to tax authorities directly in many jurisdictions.
The EU's DAC8 directive took effect on 1 January 2026, requiring crypto service providers to collect and report customer transaction data for automatic exchange between member states from 2027. The OECD's Crypto-Asset Reporting Framework extends similar requirements internationally.
The practical consequence is that the era of crypto activity being invisible to tax authorities has ended in most developed jurisdictions. Whatever your reporting obligation is, the authority increasingly already has the data.
Losses
In most systems, a realised loss offsets realised gains, and some jurisdictions allow excess losses to carry forward or offset other income up to a limit.
Losses only count once realised, meaning the asset was sold, swapped, or otherwise disposed of. An unrealised loss on something you still hold does not reduce a tax bill. Rules on selling and immediately rebuying the same asset to realise a loss vary widely.
What to keep
- Date, amount, and fiat value of every purchase.
- Date, amount, and fiat value of every sale, swap, or spend.
- Fiat value of every reward, airdrop, or payment received on the day received.
- Fees paid, which typically adjust the cost basis or reduce proceeds.
- Wallet and exchange records exported regularly, since platforms close and records disappear.
Frequent traders generate thousands of events a year. Tracking software exists for this reason, and starting from complete records is far easier than reconstructing them.
Where mb.io fits
Complete records start with a platform that provides them.
mb.io is a regulated crypto spot exchange backed by MultiBank Group, a financial institution founded in 2005 that serves more than 2 million clients across 100+ countries.
- Regulated by VARA in the UAE and AUSTRAC in Australia
- 10/10 security score from Hacken, an independent blockchain security auditor
- Institutional-grade MPC custody powered by Fireblocks, with segregated client funds
- A curated list of assets, so you're not sorting through thousands of tokens to find the ones worth trading
- Buy, sell, and swap in three steps, from sign-up to purchase
- 24/7 multilingual client support
Open your account and start trading on mb.io.
Frequently asked questions
Is crypto taxed?
In most countries, yes. Crypto is usually treated as property, so selling, swapping, or spending it can trigger a capital gain or loss, and receiving it as a reward or payment is usually income. Rules vary by jurisdiction, and this is not tax advice.
Is swapping one crypto for another taxable?
In most jurisdictions, yes. You disposed of the first asset at its market value, which realises a gain or loss even though no fiat was involved.
Do I pay tax when I buy crypto?
Generally not. Buying is an acquisition, not a disposal. Tax arises when you later sell, swap, or spend it.
Are staking rewards taxed?
Usually as income at the value received on the day. Selling them later generates a separate capital gain or loss measured from that value.
Is moving crypto between my own wallets taxable?
No, in essentially all jurisdictions. Ownership did not change. Keep records so that you can demonstrate the transfer was between your own addresses.
Can crypto losses reduce my tax?
In most systems, realised losses offset realised gains, and some allow excess losses to carry forward or offset other income. Rules on selling and rebuying to realise a loss vary.
Do exchanges report to tax authorities?
Increasingly, yes. The EU's DAC8 took effect in January 2026, and the OECD's Crypto-Asset Reporting Framework extends similar requirements internationally. Assume the authority has the data.
What records should I keep for crypto tax?
Date, amount, and fiat value of every acquisition, disposal, and receipt, plus fees. Export exchange and wallet records regularly, since reconstructing them after a platform closes is difficult.
