Crypto-to-crypto exchanges and when tax arises
- Author
- CRYPTO PORT Editorial
- Published
- Updated
- Reading time
- 6 min
In short
Exchanging one crypto asset for another realises a gain or loss on the asset you gave up, even though no yen was involved. 'I never cashed out to yen, so it does not apply to me' is a misreading. Check National Tax Agency guidance and ask a tax professional how your own transactions are treated.
Key points
- At the moment of exchange, the asset you gave up is treated as sold at market value
- It looks like a simple conversion on screen, which is exactly why it goes unrecorded
- Swapping into a stablecoin is still a crypto-to-crypto exchange
- The more trades you make, the less feasible manual totalling becomes
Definition
A transaction giving up one crypto asset to obtain another. Even without yen in the middle, the asset given up is subject to gain or loss recognition under the established framework.
The misunderstanding comes from the interface: buying ether with bitcoin involves no yen movement at all. For tax purposes, though, it is two movements — disposing of the bitcoin at its value at that moment, and using those proceeds to acquire ether. The difference between that value and your bitcoin's cost basis is a gain or loss.
Swapping into a stablecoin is no different. Moving into a price-stable token is not the same as returning to yen, and it is still an exchange. Anyone who habitually rotates into stablecoins when the market looks shaky has generated a calculation event on every one of those moves.
What makes this hard in practice is how quickly entries multiply. Each rotation creates one disposal calculation. Switching assets several times a day produces an enormous annual workload. Once it outgrows a spreadsheet, consider a calculation tool.
Also note that the calculation needs the value at the moment of exchange. Japanese exchange records often carry a yen figure, but overseas venues and DEXs may only record dollar or token amounts. In that case you need to be able to explain which rate and price source you used to convert.
How your particular transactions should be organised depends on what you actually did. Anything ambiguous, or anything with missing records, should go to a tax professional rather than being left alone.
Watch out for
- · This page is a general orientation, not tax advice
- · 'I never converted to yen, so there is nothing to report' is incorrect
- · Rules change; confirm the current position with the National Tax Agency and a tax professional
Frequently asked questions
Is moving the same asset between exchanges an exchange?
Moving the same asset between places you control does not mean you acquired a different asset. Finer points remain, such as crypto paid as a network fee. Confirm with a tax professional.