What is taxable event?

A transaction that creates a gain, loss, or income to report, which in the United States and many other countries includes selling crypto for cash, swapping one coin for another, and spending it.

Moving coins between wallets you own is generally not one. Staking rewards and an airdrop are usually income at the value received; see capital gains.

The rule that surprises people most is that swapping one coin for another is a disposal. Nothing was cashed out, no bank was involved, and in the United States a gain is still reportable.

How it works

The United States treats virtual currency as property rather than as currency (source: Internal Revenue Service Notice 2014-21). That single classification produces most of the consequences.

Property is disposed of, not spent. Every disposal is measured: proceeds in dollars, minus the cost basis of the units disposed of, gives a gain or a loss. Whether the proceeds arrived as cash, as another coin, or as a coffee makes no difference to the arithmetic.

That puts the following in scope in most jurisdictions that follow this approach.

Selling for fiat. Swapping one coin for another, valued in your currency on both legs. Spending crypto on goods or services. Paying a network fee with the asset, in strict terms, though practice varies. Receiving rewards, airdrops, or payment for work, which is income at the value received rather than a capital gain.

Generally out of scope: buying crypto with fiat, which sets a basis rather than realizing anything; moving coins between wallets you control; and holding through any price move at all.

Other jurisdictions differ meaningfully. Several exempt gains entirely after a holding period, and several tax nothing below an annual allowance. The tax section tracks those rules per jurisdiction with their sources.

Example

Illustrative figures. You buy 1 unit of coin A for $1,000. It rises to $3,000 and you swap the whole position for coin B. No cash was involved and your bank saw nothing.

For tax purposes you disposed of coin A for $3,000 of value against a $1,000 basis, so there is a $2,000 gain to report. You also acquired coin B with a basis of $3,000, which is the number that matters when you eventually sell it. If coin B then falls to $1,500 and you sell, that is a separate $1,500 loss in a possibly different tax year. Two events, two years, one continuous position in your own mind.

Why it matters when you buy

The way you buy determines how many events you create later. Buying an asset directly generates one lot; buying through a stablecoin creates a second leg that is itself a disposal in many systems. The tax section shows the verified rules by jurisdiction, the buy pages show which venues sell an asset directly where you live, and the crypto tax basics guide covers the framework.

Related terms

• capital gains — the usual measure of a disposal
• cost basis — the figure subtracted from proceeds
• tax lot — what each acquisition creates
• staking income — the income side of the ledger
• wash sale rule — the repurchase constraint
• tax loss harvesting — using losses against gains

Questions

Is buying crypto a taxable event?

Buying with fiat generally is not. It establishes the cost basis that will be used when you eventually dispose of the asset.

Do I owe tax if I never cash out to my bank?

In systems that treat crypto as property, yes. Swapping and spending are disposals regardless of whether fiat is ever involved.

What about moving coins to a hardware wallet?

Moving between wallets you control is generally not a disposal. It does move the tax lot, and per-account basis tracking means the dates and costs need to travel with it. See tax lot.