Is swapping crypto taxable?

Swapping crypto is a taxable event in both the US and the UK. When you convert one coin into another, tax law treats you as disposing of the first coin at its market value, so any rise or fall since you acquired it becomes a gain or loss. The steps for making a swap are covered in how to swap crypto. This guide focuses on the tax side.

Is converting bitcoin to ethereum taxable?

Yes. The IRS says exchanging a digital asset for another digital asset is a disposition that produces a capital gain or loss. The amount realized is the fair market value of the ether you receive, minus certain transaction costs.

A simple example: you bought bitcoin for $3,000 and later convert it into ether worth $5,000. You have a $2,000 gain, even though you never touched dollars. If the ether had been worth $2,500, you would have a $500 loss. Whether it is short-term or long-term depends on how long you held the bitcoin.

Is swapping crypto a taxable event if no dollars change hands?

It is, and that surprises many people. Under IRS rules, the new coin's basis is its fair market value at the time of the swap, and its holding period starts the day after you receive it. So the swap closes out the old position and opens a new one.

Fees work differently from a cash purchase. The IRS says transaction costs on a crypto-for-crypto exchange reduce the amount realized on the coin you give up, and cannot be added to the basis of the coin you receive. More on this is in what is crypto cost basis.

Is swapping crypto to a stablecoin taxable?

Yes. A stablecoin is a separate digital asset, so moving from ether to USDC is a disposal of the ether. The IRS FAQs say stablecoin exchanges are taxable even if they are not reported on Form 1099-DA.

Moving back out of a stablecoin is also a disposal, though the gain or loss is usually small. A House bill, the Digital Asset Tax Certainty Act, would treat qualified US dollar stablecoins at their redemption value for tax years after 2026, according to the Joint Committee on Taxation. As of November 2026 it had not become law.

Is swapping crypto taxable in the UK?

Yes. GOV.UK lists exchanging tokens for a different cryptoasset as a disposal for Capital Gains Tax, alongside selling and spending. HMRC's manual describes it as putting token A into a transaction and receiving token B in return.

The gain is worked out using pooled costs, not the coins you pick. Each token type has its own section 104 pool, with same-day and 30-day matching rules applied first. For fees on a token-to-token swap, HMRC accepts splitting them 50/50 between the token disposed of and the token acquired, as long as no amount is deducted twice. The wider picture is in how crypto is taxed in the UK.

Rules differ by country and change often. Check the tax authority or a qualified professional for your own situation.